Community discussions

MikroTik App

Search found 153 matches

by imrankosi
Sat Feb 07, 2015 6:08 pm
Forum: Wireless Networking
Topic: wi-fi problem
Replies: 1
Views: 888

Re: wi-fi problem

Try to use delaythreshold option in dhcp server settings
by imrankosi
Thu Jan 08, 2015 4:42 pm
Forum: General
Topic: bypass public address from hotspot interface
Replies: 1
Views: 841

Re: bypass public address from hotspot interface

first of all your public ip should be in routed mode . separate interface is required for public ip. or go for virtual interface for publice ip or for hotspot . choice is yours . if you wann i can configure this for you.


imran.khan@xtremenetworks.co.in
by imrankosi
Thu Jan 08, 2015 4:36 pm
Forum: Beginner Basics
Topic: Can i block or drop hotspot clients if not login
Replies: 3
Views: 1609

Re: Can i block or drop hotspot clients if not login

use firewall to block such connections
by imrankosi
Thu Jan 08, 2015 4:29 pm
Forum: General
Topic: radius
Replies: 1
Views: 875

Re: radius

check this picture
aa1.JPG
by imrankosi
Thu Jan 08, 2015 4:15 pm
Forum: General
Topic: Web Proxy
Replies: 7
Views: 3650

Re: Web Proxy

export your firewall rule
by imrankosi
Wed Jan 07, 2015 7:00 pm
Forum: Beginner Basics
Topic: Problem to access 1100AHx2
Replies: 1
Views: 974

Re: Problem to access 1100AHx2

hi,
use winbox > open from mac address in terminal window type this / system reset press y . that's all
by imrankosi
Wed Jan 07, 2015 6:56 pm
Forum: General
Topic: Hotspot Username and Password
Replies: 2
Views: 1327

Re: Hotspot Username and Password

hi,
username and password is not case sensitive. this is not possible in mikrotik till now
by imrankosi
Wed Jan 07, 2015 6:52 pm
Forum: General
Topic: Need consultant for small config
Replies: 1
Views: 1399

Re: Need consultant for small config

ok i can try i am mikrotik certified consultant imran.khan@xtremenetworks.co.in
by imrankosi
Wed Jan 07, 2015 6:41 pm
Forum: Beginner Basics
Topic: Lots of fake established connections in connection tracking
Replies: 1
Views: 1398

Re: Lots of fake established connections in connection track

/ip firewall filter add action=drop chain=input connection-state=invalid add chain=input connection-state=related add chain=input connection-state=established add chain=input src-address=wan ip add chain=input src-address=lan ip add chain=input comment=Winbox dst-port=8291 protocol=tcp add chain=inp...
by imrankosi
Wed Jan 07, 2015 6:36 pm
Forum: General
Topic: Using Radius with Hotspot but think we out grew it
Replies: 3
Views: 1364

Re: Using Radius with Hotspot but think we out grew it

did you enable api service in mikrotik and configure api in radius service. if no the configure api. most probable you will get the solution
by imrankosi
Wed Jan 07, 2015 6:27 pm
Forum: General
Topic: Web Proxy
Replies: 7
Views: 3650

Re: Web Proxy

did you redirect http traffic port 80 to 8080 in mikrotik firewall. also d't forget to block unauthorized use of 8080 in filter rule
by imrankosi
Wed Jan 07, 2015 6:20 pm
Forum: General
Topic: How long it takes mikrotik to answer support emails ?
Replies: 12
Views: 3243

Re: How long it takes mikrotik to answer support emails ?

most probable with in next 24 hrs
by imrankosi
Wed Jan 07, 2015 6:16 pm
Forum: General
Topic: Mikrotil and Remote access
Replies: 1
Views: 857

Re: Mikrotil and Remote access

its depend on the location of the remote machine but than also the activity will be logged only of remote machine. not the team viewer user ip.
by imrankosi
Wed Jan 07, 2015 6:11 pm
Forum: Wireless Networking
Topic: Regarding static IP users getting hotspot login page
Replies: 2
Views: 1421

Re: Regarding static IP users getting hotspot login page

hi, first of d't mix hotspot interface with your static ip. you should run both setup parallel . for wireless create virtual interface to connect the user how have the static ip. some basic changes are also required in your router . give access i will do this for you. for logs your radius manager ca...
by imrankosi
Wed Jan 07, 2015 5:53 pm
Forum: Wireless Networking
Topic: Capsmanager
Replies: 4
Views: 3261

Re: Capsmanager

no . nv2 is also not supported
by imrankosi
Wed Jan 07, 2015 5:47 pm
Forum: General
Topic: hot spot Logs with MAC binding
Replies: 3
Views: 1185

Re: hot spot Logs with MAC binding

for this you have to redirect all traffic to specified port of the software which can handle the logs send by the mikrotik
by imrankosi
Wed Jan 07, 2015 5:34 pm
Forum: Wireless Networking
Topic: How to get a MAC from device not connected
Replies: 3
Views: 1145

Re: How to get a MAC from device not connected

its not possible
by imrankosi
Mon Jan 05, 2015 3:02 am
Forum: General
Topic: How to block facebook and Internet download manager
Replies: 5
Views: 3625

Re: How to block facebook and Internet download manager

facebook.JPG
filter.JPG

check the attachments
by imrankosi
Sun Jan 04, 2015 10:04 am
Forum: Beginner Basics
Topic: bypass public address from hotspot interface
Replies: 1
Views: 1039

Re: bypass public address from hotspot interface

first of all hotspot can not by pass public ip. if you want to provide public ( real ip) to customers . First of all you have to divide real ip into small subnet , also you have not mentioned how man public ip you have. after this you have to run hotspot and real ip pool parallel. if you need some h...
by imrankosi
Sun Jan 04, 2015 9:49 am
Forum: Beginner Basics
Topic: What is src. address and dst.address and how to make Hotspot
Replies: 1
Views: 997

Re: What is src. address and dst.address and how to make Hot

creating hotspot is very simple. lot of videos are available on internet. just hit hotspot select desired interface follow on screen instruction that's it



need karma if helped
by imrankosi
Mon Nov 17, 2014 6:43 pm
Forum: Wireless Networking
Topic: Mikrotik server configuration?
Replies: 2
Views: 1591

Re: Mikrotik server configuration?

check dhcp server in ip
by imrankosi
Fri Nov 14, 2014 11:31 am
Forum: General
Topic: Linking a Public IP with a Private IP
Replies: 6
Views: 2486

Re: Linking a Public IP with a Private IP

yeah that's possible use this rule:


chain=dstnat action=dst-nat to-addresses=lan ip to-ports=22
protocol=tcp dst-address=wan ip dst-port=22

this rule will solve your issue but remember you wan should have real or live ip

give karma if you got solution for your issue
by imrankosi
Thu Nov 13, 2014 7:45 am
Forum: Beginner Basics
Topic: Very basic setup
Replies: 3
Views: 1486

Re: Very basic setup

no change in firewall required

but recheck nat rule especially this rule chain=srcnat action=masquerade out-interface=ether1 ( eth1=your wan ip)


give karma if i helped you
by imrankosi
Wed Nov 05, 2014 5:14 pm
Forum: Beginner Basics
Topic: port forwarding for ip cam
Replies: 10
Views: 4526

Re: port forwarding for ip cam

i think u wann to view from wan ip


for this you should have live ip or real ip on mikrotik than only you can view from wan
by imrankosi
Wed Nov 05, 2014 4:38 am
Forum: General
Topic: Default config hotspot killed?
Replies: 3
Views: 1240

Re: Default config hotspot killed?

no issue where you want to implement mikrotik

provide me mikrotik ip
password
by imrankosi
Wed Nov 05, 2014 4:29 am
Forum: General
Topic: squid proxy issue
Replies: 6
Views: 2147

Re: squid proxy issue

thanks for the great help but what about the chain forward? or other option
by imrankosi
Mon Nov 03, 2014 8:42 am
Forum: General
Topic: squid proxy issue
Replies: 6
Views: 2147

Re: squid proxy issue

i need the rule to allow direct connection to specified ip . proxy is trasprant
by imrankosi
Sat Nov 01, 2014 4:41 am
Forum: General
Topic: squid proxy issue
Replies: 6
Views: 2147

Re: squid proxy issue

hello members, Recently i configured squid proxy on ubuntu to catch youtube and http websites . Ever thing is running fine can get 96mbps downloading speed to customer once the file is cached in ubuntu server. but one issue is there with some users they c't access sites d't open properly. i had cre...
by imrankosi
Sat Nov 01, 2014 4:40 am
Forum: General
Topic: squid proxy issue
Replies: 6
Views: 2147

squid proxy issue

hello members, Recently i configured squid proxy on ubuntu to catch youtube and http websites . Ever thing is running fine can get 96mbps downloading speed to customer once the file is cached in ubuntu server. but one issue is there with some users they c't access sites d't open properly. i had crea...
by imrankosi
Sat Nov 01, 2014 4:22 am
Forum: Forwarding Protocols
Topic: Routing policy question
Replies: 5
Views: 2522

Re: Routing policy question

i think you should go for loadbalancing in which you can define the priority to specified interface(wan) . some other benefits also you will get



need karma if i helped you
by imrankosi
Sat Nov 01, 2014 4:15 am
Forum: General
Topic: Default config hotspot killed?
Replies: 3
Views: 1240

Re: Default config hotspot killed?

first try this in winbox open ur router board ip> hotspot>server> hit hotspot setup button > select lan interface >clink next > configure dns that's it. for hotspot page design. its comes with default mikrotik login page . however you can design by your own or you can hire web designer which will co...
by imrankosi
Sat Nov 01, 2014 4:06 am
Forum: Beginner Basics
Topic: Very basic setup
Replies: 3
Views: 1486

Re: Very basic setup

check the following


ip should be on correct interface
check nat rule in firewall
disable dhcp on wan if running


give karma if i helped you
by imrankosi
Sat Nov 01, 2014 3:53 am
Forum: Beginner Basics
Topic: User bandwidth
Replies: 1
Views: 929

Re: User bandwidth

configure your network with radius manager ( available in market with track report of users) and hotspot that's it all problem will be solve from this.



give karma if i helped yoy
by imrankosi
Sat Nov 01, 2014 3:43 am
Forum: Wireless Networking
Topic: how to configure hotspot like Radius Manager
Replies: 4
Views: 2287

Re: how to configure hotspot like Radius Manager

First of all let me clear one thing HOTSPOT C'T BE USED LINE RADIUSMANAGER. both hotspot and radiusmanager have different task hotspot bind the user speed,data,mac etc and radius manage keeps the database , profile,send informant to hotspot regarding bandwidth etc. and your problem is also not clear...
by imrankosi
Thu Oct 16, 2014 5:19 am
Forum: Wireless Networking
Topic: how to configure hotspot like Radius Manager
Replies: 4
Views: 2287

Re: how to configure hotspot like Radius Manager

for this 1. enable usermanager in any mikrotik box or you can go for third party radius software for management but usermanager is free to use. 2. configure hotspot mikrotik and usermanager mikrotik so they both communicate with each other 3 . create users and profile in usermanager . ( profile= pac...
by imrankosi
Sat Jan 25, 2014 5:59 am
Forum: Forwarding Protocols
Topic: server access to specified ip
Replies: 1
Views: 1140

server access to specified ip

hello masters, I am facing a strange problem some time i saw a very heavy traffic on my server upto 90mbps . In mikrotik when i uses torch to check from where this traffic is comming their is some public ip which is creating this proble I want to have access to server to some specified ip ( xx.xx.xx...
by imrankosi
Thu May 30, 2013 8:21 pm
Forum: The User Manager
Topic: user expire before time
Replies: 0
Views: 1290

user expire before time

Hi, i have this common problem that my user expire before expire of the profile and client get the error message that no valid profile find. in that case i have to reset his download and upload traffic . that it start working . user can login. Any body have the solution for this . Thanks in advance
by imrankosi
Thu May 30, 2013 8:15 pm
Forum: The User Manager
Topic: script to reset the data counter
Replies: 0
Views: 1356

script to reset the data counter

hi ,
i need the script so that when i add new profile to the user his old data counter should reset to zero

Thanks In Advance
by imrankosi
Sat May 04, 2013 12:19 pm
Forum: Scripting
Topic: script not work after rebooting the router
Replies: 3
Views: 1282

script not work after rebooting the router

When ever i reboot the router or it get get rebooted with some reason . my schedule stop working . i have to manually set the time again and it start working again . i am attaching this image to show what is the problem i am facing
by imrankosi
Wed May 01, 2013 4:24 pm
Forum: Wireless Networking
Topic: syslog server for ubuntu 12.04 to collect routerboard log...
Replies: 4
Views: 2812

Re: syslog server for ubuntu 12.04 to collect routerboard lo

hi,
I am using kiwi syslog server
Hi dude,
is there any syslog server i can use to collect routerboard remote log???

my tools is ubuntu 12.04 LTS...
appreciated it.
by imrankosi
Tue Apr 09, 2013 12:59 pm
Forum: General
Topic: system logging webproxy and user accounts problem?
Replies: 2
Views: 3273

Re: system logging webproxy and user accounts problem?

any idea for this new update in 5 years
by imrankosi
Tue Apr 02, 2013 10:26 am
Forum: Scripting
Topic: traffic shaping
Replies: 2
Views: 15632

traffic shaping

hi, i have limited bandwidth and i wann to use the bandwith effeciently .for the i wann the user who are just browsing they will get the prority after that voip and than youtube than other traffice and in the last i wann the p2p and torrents. and body have the idea to manage this . i great trouble n...
by imrankosi
Tue Apr 02, 2013 10:11 am
Forum: Scripting
Topic: global-in what is this i d't get
Replies: 0
Views: 811

global-in what is this i d't get

Then we create quueue tree, and change Max upload and download speed under DSL_IN and DSL_OUT (global-in gloabal-out) and chanege priority rules to suit your needs: /queue tree add burst-limit=0 burst-threshold=0 burst-time=0s disabled=no limit-at=\ 10000000 max-limit=11000000 name=DSL_IN packet-mar...
by imrankosi
Fri Dec 21, 2012 3:29 am
Forum: General
Topic: hotspot
Replies: 1
Views: 910

Re: hotspot

going interface =lan or wan???????????????????????????????????
Hi.i want to setup hotsop on out going interface.is it possible? HOW?
by imrankosi
Fri Dec 21, 2012 3:28 am
Forum: General
Topic: hotspot
Replies: 1
Views: 1186

Re: hotspot

just enable hotspot on that interface only

give KARMA If i helped you
hi.i have 2 interfaces on mikrotik.i want run hotspot only on one interface.how can i do it?how
by imrankosi
Fri Dec 21, 2012 3:26 am
Forum: General
Topic: Monitoring
Replies: 1
Views: 1020

Re: Monitoring

it possible, you have to redirect your traffic from 80 port to another port, enable web proxy, after this you need log software to receive logs from your router. a bit difficult but it is very important to keep the copy of the activity of the customers give karma if i helped you How Can i Monitor us...
by imrankosi
Fri Dec 21, 2012 3:22 am
Forum: General
Topic: Hotspot Login
Replies: 3
Views: 1378

Re: Hotspot Login

hi, your problem has so many reason, but try this if it helps, under hotspot server how many ip you have alloued on per mac give karma if i helped you I have been using a RB2011 to manage a Hotel WiFi network for the past six months. The only complaint I have had is that a lot of people have to keep...
by imrankosi
Fri Dec 21, 2012 3:11 am
Forum: The User Manager
Topic: [SOLVED] Help, cannot login to user manager web interface
Replies: 3
Views: 12369

Re: Help, cannot login to user manager web interface

hi, i tested this<my router ip>/usermgr dose't work with my um also. just type this<my router ip>/userman .every thing will be fine Give Karma if i helped you I am a new Mikrotik user and I am trying to set up user manager for the first time on a RouterBoard751G with level 4 licence. I have installe...
by imrankosi
Fri Nov 02, 2012 6:08 pm
Forum: General
Topic: router os old verson
Replies: 2
Views: 1498

router os old verson

from where to download old verson of mikrotik router os for 133 router board
by imrankosi
Mon Oct 15, 2012 5:36 am
Forum: The User Manager
Topic: profile for night users
Replies: 2
Views: 1613

Re: profile for night users

Is your router properly syncronized with a NTP server, and do you have proper time zone selected?
ntp and time zone is configured properley
by imrankosi
Thu Oct 11, 2012 2:09 am
Forum: General
Topic: [HOTSPOT] White list IP
Replies: 3
Views: 1397

Re: [HOTSPOT] White list IP

Hi there,
is it possibile to use an hosts IP list to gave them access without hotspot authentication?
?????????????????????????????????????????????????????????????????????
by imrankosi
Wed Oct 10, 2012 5:37 pm
Forum: The User Manager
Topic: profile for night users
Replies: 2
Views: 1613

profile for night users

hi experts,
I created a profile with time limit 19:00:00 to 08:00:00 but its not working i got this message access denied at this time . may i know where i am wrong . thanks i advance
by imrankosi
Wed Oct 10, 2012 5:30 pm
Forum: The User Manager
Topic: how to reset users manager
Replies: 8
Views: 36706

Re: how to reset users manager

Newbeinet its good information i hope so its useful for me and others..

Thanks dear.
hi if the information is useful for . please give me karma so that i will also be inspired to do thsese things
by imrankosi
Fri Sep 14, 2012 3:08 pm
Forum: General
Topic: Hotspot IP binding suggestion
Replies: 2
Views: 2439

Re: Hotspot IP binding suggestion

for this you have to configure user manager with hotspot .than you can have rx tx limits on each and ever user give karma if i helped you please add option to select profile or manually enter rx tx limit in ip binding tab to limit bind users (ip->hotspot->ip binding) wBw, Muhammad Nasir Javed
by imrankosi
Fri Sep 14, 2012 3:01 pm
Forum: General
Topic: how to access the mikrotik device from any where
Replies: 8
Views: 2112

Re: how to access the mikrotik device from any where

you need just a public ip on your router THAT'S ONLY IS REQUIRED TO HAVE ACCESS ON THE ROUTER FROM ANYwhere . What do you mean about the cameras? surveillance camera = ip camera.we need it for home,office,..etc to set ip cemera we need somthigs/ 1- static ip 2- ddns 3- internet connection like router
by imrankosi
Thu Sep 06, 2012 6:05 am
Forum: General
Topic: in 450g router how to get wan ip to punlic lan ip
Replies: 3
Views: 1213

Re: in 450g router how to get wan ip to punlic lan ip

hi, for routing mode you need i big ip pool at least /27 pool is required so that subnetting can be done and ip can be provided to the customer Hello Friends, I have Mikrotik 450g Router , i need to config and provide to customer Public Ip , i have WAN IP : 123.xxx.117.77/30 ( Wan Public Ip) (123.xx...
by imrankosi
Thu Sep 06, 2012 5:59 am
Forum: General
Topic: how to access the mikrotik device from any where
Replies: 8
Views: 2112

Re: how to access the mikrotik device from any where

you are supposed to put static ip on the router give karma if i helped you hi every one ...suppose you have any mikrotik device such as sextant 5hnd .you use this unit as internet connection . the question is / can we access this device from any where in the world ( by using the internet ) what i ha...
by imrankosi
Wed Sep 05, 2012 9:08 pm
Forum: The User Manager
Topic: Logging UM login
Replies: 5
Views: 2739

Re: Logging UM login

do you wann to configure um with hotspot
I have set access to UM before hotspot login. So I want to log what username is typed in the um. Just like the logs in UM. but it can be shown in MT log.
by imrankosi
Sat Sep 01, 2012 5:21 am
Forum: The User Manager
Topic: cache server with usermanager
Replies: 0
Views: 1213

cache server with usermanager

Hi
how to implement cache server with um and which software to use for cacheing server
by imrankosi
Sat Sep 01, 2012 5:17 am
Forum: The User Manager
Topic: Logging UM login
Replies: 5
Views: 2739

Re: Logging UM login

i d't got you. please clear your qustion
Hello
I want to log usermanager login by users... or login attempt into the usermanger
Is it possible.
by imrankosi
Tue Aug 28, 2012 5:14 am
Forum: Scripting
Topic: conf. to avoid static ip black listing pbl sbl xbl
Replies: 0
Views: 845

conf. to avoid static ip black listing pbl sbl xbl

hi,
my network is in routing mode the problem is that my static ip got listed in pbl,xblandsbl database. is there a way to avoid this .
thanks in advance
by imrankosi
Mon Aug 27, 2012 6:35 am
Forum: Wireless Networking
Topic: Advice for Hotspot setup using RB751G-2HnD
Replies: 1
Views: 2273

Re: Advice for Hotspot setup using RB751G-2HnD

numbers of user depends on the users activities and bandwidth they will use. importantly upload speed numbers of users will depend on the quality of signals they are getting, if one client is getting poor signals , this user will effect all the users. no board performance will not be effected. chain...
by imrankosi
Fri Aug 24, 2012 7:11 am
Forum: General
Topic: mail.yahoo.com not working with 450G
Replies: 2
Views: 2165

Re: mail.yahoo.com not working with 450G

problem might be with your dns putting proper dns will solve this problem Hi, I need help from you we are using Mikrotik 450G RouterBoard on our Network it is fine for all but from few weens we have major issue with mail.yahoo.com web site it is not opening ofter restarted DNS client service at loca...
by imrankosi
Tue Aug 21, 2012 5:00 am
Forum: The User Manager
Topic: userman crahed
Replies: 5
Views: 13109

Re: userman crahed

its work My userman database crashed. I could not login to the userman. I attempt to rebuild the database and then I was able to login to the userman even though it said the rebuild failed. Now I cannot edit user accounts because its telling me that the database read only. I see this log message on ...
by imrankosi
Tue Aug 21, 2012 4:49 am
Forum: The User Manager
Topic: how to reset users manager
Replies: 8
Views: 36706

Re: how to reset users manager

hi,
but you have not given me karama. i am waiting positively
Update:

Tested on OS 5.14 & 5.19

/tool user-manager customer print

Thanks for original post!
by imrankosi
Tue Aug 21, 2012 4:45 am
Forum: The User Manager
Topic: Users changing their password remotely via UserManager
Replies: 10
Views: 10734

Re: Users changing their password remotely via UserManager

hi dude, its works First, user must login hotspot to access usermanager panel: 1. user login hotspot -> http://[ my-hotspot-ip ]/login 2. user login usermanager -> http://[ my-router-ip ]/user To access usermanager, You must use the IP address that is not used by the hotspot server. user change pass...
by imrankosi
Sat Aug 18, 2012 5:55 pm
Forum: The User Manager
Topic: no valid profile found: Howto change this message
Replies: 3
Views: 4725

Re: no valid profile found: Howto change this message

its a good idea mikrotik might know the answer. i am also waiting for the solution
by imrankosi
Mon Aug 06, 2012 7:23 pm
Forum: The User Manager
Topic: Server configuration for 9000 users
Replies: 5
Views: 4023

Re: Server configuration for 9000 users

Hi
you want to use user manager for 10000 users?
i think if you use other radius server like free radius your result is better.
what is in free radius server . why not to go with um
by imrankosi
Mon Aug 06, 2012 7:20 pm
Forum: The User Manager
Topic: Server configuration for 9000 users
Replies: 5
Views: 4023

Re: Server configuration for 9000 users

why not usermanager ?????????????/
what special in free radius server
by imrankosi
Mon Aug 06, 2012 3:21 pm
Forum: The User Manager
Topic: Server configuration for 9000 users
Replies: 5
Views: 4023

Server configuration for 9000 users

hi,
can am body tell me which serve machine to purchase which will best suited to my requirement . i have 200mb of bandwidth and have approx 10000 users
by imrankosi
Sun Aug 05, 2012 6:11 am
Forum: The User Manager
Topic: Logo
Replies: 20
Views: 17571

Re: Logo

Thank you so much!!!!!

It works
can you put the screen shot of the logo
by imrankosi
Mon Jul 23, 2012 5:27 am
Forum: The User Manager
Topic: Access Manager (Free Radius for Mikrotik) - Your Views?
Replies: 31
Views: 17914

Re: Access Manager (Free Radius for Mikrotik) - Your Views?

c't login invalid usernam and password
by imrankosi
Fri Jul 06, 2012 6:19 pm
Forum: The User Manager
Topic: 1Mbps for 10 Gb and @256kbps after 10 GB
Replies: 9
Views: 6053

Re: 1Mbps for 10 Gb and @256kbps after 10 GB

can u help me to do dis
by imrankosi
Thu Jul 05, 2012 5:34 am
Forum: The User Manager
Topic: 1Mbps for 10 Gb and @256kbps after 10 GB
Replies: 9
Views: 6053

Re: 1Mbps for 10 Gb and @256kbps after 10 GB

i am looking for the solution with in mikrotik usermanager. i run my network of routers not on servers.
by imrankosi
Tue Jun 19, 2012 7:38 pm
Forum: The User Manager
Topic: 1Mbps for 10 Gb and @256kbps after 10 GB
Replies: 9
Views: 6053

1Mbps for 10 Gb and @256kbps after 10 GB

Hi,
I am using um for a long time and works file . But now i wann to create user who will get 1mbps speed upto 10 Gb and after 10Gb the user will get the speed of 256 kbps upto 20gb after this the plan will expire.
Hopping for some positive replies .
thanks in advance
by imrankosi
Sun Jun 17, 2012 8:52 am
Forum: Beginner Basics
Topic: Proxy Log analysis
Replies: 1
Views: 1158

Re: Proxy Log analysis

hi ,
have you tried kiwi syslog server. I am using this and works file
by imrankosi
Mon Jun 04, 2012 8:12 am
Forum: Beginner Basics
Topic: is it possible to know which websites entered in Hotspot?
Replies: 8
Views: 2439

Re: is it possible to know which websites entered in Hotspot

hi,
Its possible to view and save the log file of the user (what they did on internet ). use web proxy, and nat setting and software to recive the logs .
by imrankosi
Mon Jun 04, 2012 7:59 am
Forum: General
Topic: Securing web proxy
Replies: 1
Views: 1108

Securing web proxy

how can we secure our wan ip and port to be used by some other peoples via proxy
by imrankosi
Thu Mar 29, 2012 5:44 pm
Forum: The User Manager
Topic: configuration of usermanger
Replies: 1
Views: 1503

Re: configuration of usermanger

do u wann to configure usermanager . just tell me how many router u have
by imrankosi
Mon Mar 12, 2012 5:14 am
Forum: General
Topic: profile for day and night for a same user
Replies: 1
Views: 804

profile for day and night for a same user

hi, i wann to know that is it possible to have two profile for a user for example i wann a user to get 256kbps from 9am to 8pm and 1mbps
from 8pm to 9am

thanks in advance
by imrankosi
Wed Feb 15, 2012 4:19 pm
Forum: The User Manager
Topic: accouting stop commands for all users
Replies: 0
Views: 1112

accouting stop commands for all users

can anybody know the command to reset accounting stop command for um users
by imrankosi
Sat Feb 11, 2012 4:48 am
Forum: RouterBOARD hardware
Topic: RB711-5Hn-u.FL installing software
Replies: 0
Views: 738

RB711-5Hn-u.FL installing software

how to install software when it get corrupted no console port????????/
by imrankosi
Thu Feb 02, 2012 4:45 pm
Forum: General
Topic: bridging two ports together behind a signal Hotspot
Replies: 4
Views: 1665

Re: bridging two ports together behind a signal Hotspot

i think your idea will not work because usermanager runs on rounting mode no bridging have to configure 2 hotspot Hi, I am trying to use a simple RB-751u-2Hud for a little hotel, that has a few wired rooms, and a wireless antenna. I am setting up a hotspot on it. I would like to bridge the 2.4 GHz A...
by imrankosi
Sun Jan 22, 2012 1:10 pm
Forum: The User Manager
Topic: User manager basics
Replies: 8
Views: 3482

Re: User manager basics

its ok
Thanks alot for all the help.

I would like to try do it myself following a guide, if that doesnt work we can use team viewer.

Thats right my eth1 is a dhcp client of the adal modem. My eth2's(hotspot interface) has an ip of 10.0.0.1.

Looking forward to hearing from you.

Many thanks
by imrankosi
Sat Jan 21, 2012 4:48 pm
Forum: General
Topic: RB433 Dead after update to 5.11
Replies: 2
Views: 1327

Re: RB433 Dead after update to 5.11

no that will not solve the problem you will have to format the mt by consol cable this will solve the problem . give karma if i helped you Hello guys, i'm updating a RB433 form ROS 4.7 to the latest 5.11. After copying the .npk to files menu in winbox, and reboot it. I cannot ping the RB433 IP and i...
by imrankosi
Fri Jan 20, 2012 5:39 am
Forum: The User Manager
Topic: New user
Replies: 1
Views: 1280

Re: New user

its not that easy to setup usermanager need deep knowledge of routers than you can or u can hire expert to do this or just gave me the access of your machine than i can configure for you. about your um pass open you mikrotik from winbox in which you have installed usermanager go to terminal type thi...
by imrankosi
Fri Jan 20, 2012 5:29 am
Forum: The User Manager
Topic: User manager basics
Replies: 8
Views: 3482

Re: User manager basics

ohhhhhh

just install team viewer on your computer your team viewer will give you userid and password and i will get your machin access
than i will configure your router to use um

Hi

Thanks alot.

I dont know how to give you remote access. Could you explain to me how to?
by imrankosi
Wed Jan 18, 2012 8:19 pm
Forum: The User Manager
Topic: User manager basics
Replies: 8
Views: 3482

Re: User manager basics

hummmmmm ok so you need to implement usermanager with hotspot. jut gave me remote accessssss to me i will do it for you thanks and regards d't forget to give karama if i helped you Please help! I am struggling to set up a hotspot. I have everything working, had my users added under ip-hotspot in win...
by imrankosi
Wed Jan 11, 2012 5:07 am
Forum: RouterBOARD hardware
Topic: Router Board repair
Replies: 49
Views: 21267

Re: Router Board repair

Does anyone know where I can get RB fixed? Or where I can get service manuals? My distributer says they don't have any and never heard of it. I hear they are easy to fix but I need schematic's. Any help will be welcome. David I have the RB411, RB433 from mikrotik. if you need it, you may can ask fr...
by imrankosi
Wed Nov 02, 2011 6:49 am
Forum: General
Topic: TLS certificate
Replies: 2
Views: 1260

TLS certificate

what is tls certificate and what is the use of this

hope i will get the good relpay


thanks in advance
by imrankosi
Wed Nov 02, 2011 6:46 am
Forum: General
Topic: @wan1 failed to connect on 5445, association time out
Replies: 1
Views: 1463

@wan1 failed to connect on 5445, association time out

can any body help to know what it means


thanks and Regards
by imrankosi
Wed Oct 26, 2011 9:28 am
Forum: General
Topic: Urgent Help With Queue & Bandwidth
Replies: 7
Views: 2542

Re: Urgent Help With Queue & Bandwidth

just use usermanager with your hotspot.

it will solve all your problems


thanks and regards

Imran Khan
by imrankosi
Mon Sep 26, 2011 4:01 pm
Forum: The User Manager
Topic: Transferin the users from the user manager V 3.22 to 5.5
Replies: 5
Views: 2522

Re: Transferin the users from the user manager V 3.22 to 5.5

just simply update the verson of mt to the new one 5.5 all your data base will also be updated



d't forget to give karma if i solved your problem
by imrankosi
Thu Aug 18, 2011 9:09 am
Forum: Wireless Networking
Topic: can two access point have same frequency ??????
Replies: 5
Views: 1336

Re: can two access point have same frequency ??????

yeah you can use the same freq. better to use different frequ. to each pointto point
by imrankosi
Mon Jul 18, 2011 7:16 pm
Forum: The User Manager
Topic: how to reset users manager
Replies: 8
Views: 36706

Re: how to reset users manager

hello masters all.... please help me, how to reset users manager?? because I forgot the password to access the user manager. thanks for the help ok no need to reset usermanage. just open your usermanager router in winbox and in terminal just type this command /tool usermanager customer print after ...
by imrankosi
Mon Jul 18, 2011 6:12 pm
Forum: Scripting
Topic: The best mode to Log ang track the internet connections
Replies: 7
Views: 10711

Re: The best mode to Log ang track the internet connections

we use Mikrotik at our ISP I want to use a LOG -server to track the Internet Connections of all users.This option is requested from Prosecutor Office The users use NAT to reach the Internet . Which is the best mode to implement this option :NETFlow or NAT Table connections export ? Regards Ilir do ...
by imrankosi
Mon Jul 18, 2011 5:23 pm
Forum: Wireless Networking
Topic: rb433 configuration
Replies: 6
Views: 1711

Re: rb433 configuration

Imran can i have yours email id....i m stucked at somewhere while configuring mikrotik.
imran_cool024@yahoo.com
by imrankosi
Sun Jul 17, 2011 7:56 am
Forum: Scripting
Topic: View report of client activites
Replies: 9
Views: 1961

Re: View report of client activites

hai imrankosi

if you dnt have any problem im interested with you to do this.

ok i can do for you
by imrankosi
Sun Jul 17, 2011 7:36 am
Forum: General
Topic: what configuration should i use for 433ah
Replies: 5
Views: 1492

Re: what configuration should i use for 433ah

just add the ip in queues option and rember to select the interface for that ip . if you forget to select the interface than it will create trouble for you . after you add the quese give tham the specified speed in max speed and min speed . than we we run script in terminal the command is interface ...
by imrankosi
Sat Jul 16, 2011 8:31 am
Forum: General
Topic: what configuration should i use for 433ah
Replies: 5
Views: 1492

Re: what configuration should i use for 433ah

please mail me your network scnario . on my mail id imran_cool024@yahoo.com
by imrankosi
Thu Jul 14, 2011 3:51 pm
Forum: Scripting
Topic: Activities report of all PCs LAN
Replies: 3
Views: 1194

Re: Activities report of all PCs LAN

will you tell me the command to enable logging web proxy

co ordinate with me on my mail id imran_cool024@yahoo.com
by imrankosi
Thu Jul 14, 2011 3:48 pm
Forum: Scripting
Topic: View report of client activites
Replies: 9
Views: 1961

Re: View report of client activites

contact me on my mail id
imran_cool024@yahoo.com
by imrankosi
Thu Jul 14, 2011 10:11 am
Forum: Wireless Networking
Topic: rb433 configuration
Replies: 6
Views: 1711

Re: rb433 configuration

by imrankosi
Thu Jul 14, 2011 8:44 am
Forum: Wireless Networking
Topic: rb433 configuration
Replies: 6
Views: 1711

Re: rb433 configuration

i told you use queues option . or please give me your networking scnario so that we can look into your problem
by imrankosi
Thu Jul 14, 2011 8:33 am
Forum: General
Topic: what configuration should i use for 433ah
Replies: 5
Views: 1492

Re: what configuration should i use for 433ah

use the queues option this will solve the problem.
by imrankosi
Thu Jul 14, 2011 8:28 am
Forum: Scripting
Topic: Mail not working & browsing so slow after installed mikrotik
Replies: 1
Views: 873

Re: Mail not working & browsing so slow after installed mikr

i d't this mt will create any proble. its a power full router first mention your senario of your network than we can solve this problem
by imrankosi
Thu Jul 14, 2011 8:24 am
Forum: Scripting
Topic: Activities report of all PCs LAN
Replies: 3
Views: 1194

Re: Activities report of all PCs LAN

just enable web proxy in / system logging. than enable web proxy in /ip webproxy after this we have to put some rules in firewall. now we are ready with logging report . now we need software to save the reports of the client we can use kiwi syslog for this . rember the port for this 514 which will b...
by imrankosi
Thu Jul 14, 2011 8:08 am
Forum: Scripting
Topic: View report of client activites
Replies: 9
Views: 1961

Re: View report of client activites

hi , its very simple. first you have to use remote service on router, enable web proxy some firewall rules are also required . and a software which will save the logs of your customers ( what they did on the internet on what time and date ). if you wann i can help you to configure this we can use te...
by imrankosi
Sat Jul 09, 2011 9:33 am
Forum: The User Manager
Topic: queue in day and night
Replies: 4
Views: 1951

Re: queue in day and night

what with dymanic queue??? usermanager creates dynamic queue
by imrankosi
Wed Jul 06, 2011 10:16 am
Forum: The User Manager
Topic: queue in day and night
Replies: 4
Views: 1951

Re: queue in day and night

Ya it is possible..

first let me know are you using any radius manager or like that to receive logs from mikrotik???
yeah , i use radius and know how to get logs from mk
by imrankosi
Mon Jul 04, 2011 4:05 pm
Forum: The User Manager
Topic: queue in day and night
Replies: 4
Views: 1951

queue in day and night

hi i wann to know is it possible to give 256kbps in day and 1 mbps in night when we are using usermanager 5.4 with hotspot. if possible please tell the steps to do this

thanks and regards
by imrankosi
Mon Jul 04, 2011 4:02 pm
Forum: The User Manager
Topic: usermanager database backup
Replies: 1
Views: 3997

usermanager database backup

hi everbody,
i am using usermanager 5.4 please tell me the steps to take the back up of usermanager. so that
if i have to change the router simpley i have to restore the backup.


thanks and regards
by imrankosi
Mon Jun 27, 2011 4:09 pm
Forum: Forwarding Protocols
Topic: any body help user to restrict user 30 days
Replies: 3
Views: 1627

Re: any body help user to restrict user 30 days

hi, why you want to block the client after 30 day your 24 online will also block him from login . or you can use mikrotik usermanager and hot spot for billing and bandwith purpose . and its good you d't neet to pay for amc for your server . and it is good even ques will be created dynamically.
by imrankosi
Sat Jun 25, 2011 8:53 am
Forum: The User Manager
Topic: Sys log software
Replies: 3
Views: 2052

Re: Sys log software

hi ,csickles
can you help me to install this software.

hope for positive replay
by imrankosi
Mon Jun 20, 2011 1:54 pm
Forum: The User Manager
Topic: Sys log software
Replies: 3
Views: 2052

Sys log software

hi all ,
is there any free software from which we can have webproxy log . and they can be saved and can be viewed according to user date time site they used
by imrankosi
Mon Jun 20, 2011 12:55 pm
Forum: General
Topic: Hotspot and user limitations with simple queue
Replies: 4
Views: 1945

Re: Hotspot and user limitations with simple queue

for this you have to usermanager with hotspot . by doing this you will be having full command on your user.you can give data limit, speed limit, time limit and also you can bind there mac address so that your net can not be miss used
by imrankosi
Mon Jun 20, 2011 12:55 pm
Forum: General
Topic: Hotspot and user limitations with simple queue
Replies: 4
Views: 1945

Re: Hotspot and user limitations with simple queue

for this you have to usermanager with hotspot . by doing this you will be having full command on your user.you can give data limit, speed limit, time limit and also you can bind there mac address so that your net can not be miss used
by imrankosi
Mon Jun 20, 2011 7:59 am
Forum: The User Manager
Topic: user logs
Replies: 9
Views: 3116

Re: user logs

fewi i have some doubts is it possible to configure on windows machine or any software is required for doing this
if yes let me have the name of hat software
by imrankosi
Sun Jun 19, 2011 3:04 pm
Forum: The User Manager
Topic: user logs
Replies: 9
Views: 3116

Re: user logs

ok but where i will get the log report and how i can get all the reports generated on remote machine
by imrankosi
Thu Jun 16, 2011 4:09 pm
Forum: The User Manager
Topic: Radius Server Not Respond
Replies: 10
Views: 65174

Re: Radius Server Not Respond

Hi i am also gtting the same problem. please help us to solve this problem
by imrankosi
Thu Jun 16, 2011 4:07 pm
Forum: The User Manager
Topic: Radius Server Not Respond
Replies: 10
Views: 65174

Re: Radius Server Not Respond

Hi i am also gtting the same problem. please help us to solve this problem
by imrankosi
Thu Jun 16, 2011 11:29 am
Forum: The User Manager
Topic: user logs
Replies: 9
Views: 3116

Re: user logs

please tell me the steps to enable this
by imrankosi
Thu Jun 16, 2011 11:29 am
Forum: The User Manager
Topic: user logs
Replies: 9
Views: 3116

Re: user logs

please tell me the steps to enable this
by imrankosi
Tue Jun 14, 2011 1:58 pm
Forum: The User Manager
Topic: user logs
Replies: 9
Views: 3116

user logs

hi i am using user manager with hot spot . what i wann is i wann to save all the logs of customers ( time ,date and site visited)
please tell me the steps to do this
by imrankosi
Tue Jun 14, 2011 1:38 pm
Forum: The User Manager
Topic: different queues for different customers during day and nigh
Replies: 0
Views: 1007

different queues for different customers during day and nigh

hi i am using user manager with hotspot. did any body know how to give 1 m in day and 2 mb at night to particular customers using queues option
by imrankosi
Tue May 10, 2011 12:11 pm
Forum: General
Topic: How to block MAC Addresses
Replies: 21
Views: 200260

Re: How to block MAC Addresses

you can use mac filltering option


d/t forgot to give karam
by imrankosi
Mon May 02, 2011 11:41 am
Forum: Forwarding Protocols
Topic: Forwarding Ip Pool on a particulr ip
Replies: 2
Views: 1216

Re: Forwarding Ip Pool on a particulr ip

first of all thank, what i wann is i have one pool /24 of publice ip. now i wann to put all these ip on mikrotik 433AH . now i want to give 16 public ip to my client who is connected via 411. here the ip on ether1 of client (mikrotik 411) must become gateway to the client. please tell me the steps t...
by imrankosi
Sat Apr 16, 2011 4:47 pm
Forum: Forwarding Protocols
Topic: Forwarding Ip Pool on a particulr ip
Replies: 2
Views: 1216

Forwarding Ip Pool on a particulr ip

Respected all,
Please help to solve my problem . i wann ip pool to be forwarded on particulatr ip. I am looking for this but i d't find any where. Please help to solve this
by imrankosi
Tue Apr 12, 2011 5:20 pm
Forum: Forwarding Protocols
Topic: Network Installation and ip routes
Replies: 1
Views: 1195

Network Installation and ip routes

hi i wann to setup a network. please help me to do this . i have 254 public ip. what i wann is that my One MT should be in AP bridge mode and another is station mode. i whan second router's ether1 shoud have 110.189.73.97/30 ip . And this ip must becom gateway to the client please tell the proper us...
by imrankosi
Tue Apr 12, 2011 4:51 pm
Forum: Beginner Basics
Topic: IP traffic flow
Replies: 1
Views: 889

IP traffic flow

can any told me how to use ip traffic flow and its advantages
by imrankosi
Thu Apr 07, 2011 6:24 am
Forum: Forwarding Protocols
Topic: Forwarding IP pool
Replies: 0
Views: 860

Forwarding IP pool

hi i want this ip pool BB.172.XX.32/27 forwarded to BB.172.XX.2. please tell me the steps to do this on mikrotik where one mikrotik is in bridge mode and another one in station mode
by imrankosi
Wed Mar 23, 2011 4:17 am
Forum: General
Topic: VPN help
Replies: 2
Views: 1859

Re: VPN help

Please specify your configration of /ppp server and /ppp client
also change your mrru=1600
by imrankosi
Wed Mar 23, 2011 4:04 am
Forum: General
Topic: Wireless Distribution
Replies: 5
Views: 1440

Re: Wireless Distribution

You can use station mode
by imrankosi
Sat Mar 19, 2011 5:14 pm
Forum: Forwarding Protocols
Topic: subnetting and routes with public ip
Replies: 1
Views: 1095

subnetting and routes with public ip

please help me to use routes with public ip subnetting so that ether1 of mikrotik router become gateway to the client. and client must get the public ip
by imrankosi
Sun Mar 13, 2011 3:37 pm
Forum: Forwarding Protocols
Topic: Routing a Public IP And Sub netting
Replies: 1
Views: 1052

Routing a Public IP And Sub netting

Some Body know the step to configur mikrotik 411 in routing mode and subnetting
by imrankosi
Thu Mar 10, 2011 6:52 am
Forum: Forwarding Protocols
Topic: Sub netting and routing live ip
Replies: 2
Views: 1458

Re: Sub netting and routing live ip

Yes public Ip
by imrankosi
Mon Mar 07, 2011 1:45 pm
Forum: General
Topic: Enabling BCP ( Bridge Control Protocol )
Replies: 2
Views: 1314

Re: Enabling BCP ( Bridge Control Protocol )

Thanks a lot for clearing the doubt
by imrankosi
Mon Mar 07, 2011 6:14 am
Forum: Forwarding Protocols
Topic: Sub netting and routing live ip
Replies: 2
Views: 1458

Sub netting and routing live ip

can any body know the step for subnetting and routing the live ip
by imrankosi
Sun Mar 06, 2011 11:11 am
Forum: General
Topic: Enabling BCP ( Bridge Control Protocol )
Replies: 2
Views: 1314

Enabling BCP ( Bridge Control Protocol )

Hi ,
Can any body tell me to how to enable BCP . Which is necessary to creat VPN .
by imrankosi
Fri Mar 04, 2011 5:40 pm
Forum: Wireless Networking
Topic: Steps to creat VPN on RB411
Replies: 3
Views: 1319

Re: Steps to creat VPN on RB411

Ok , i have two locations both having public ip . i just wann to connect them as it feels like they are on lan. I shoul be able to share printers and files even the share folders of the pc . Please tell me the configration to do this. i will be very thank full
by imrankosi
Thu Mar 03, 2011 1:45 pm
Forum: Wireless Networking
Topic: Steps to creat VPN on RB411
Replies: 3
Views: 1319

Steps to creat VPN on RB411

Hi ,
i wann to creat vpn connection with two RB411. Both radio has the live ip with different ISP. Please tell the detail configuration to do this
by imrankosi
Sun Oct 19, 2008 2:34 pm
Forum: Beginner Basics
Topic: latecny prob
Replies: 3
Views: 1612

Re: latecny prob

that's nightmare man..

my suggestion : don't connect more than 20 clients on 1 AP, specially omni antenna, you will be facing huge problem. try to use sectoral antena to split your clients.
i am using sectoral antena
by imrankosi
Sun Oct 19, 2008 2:26 pm
Forum: Beginner Basics
Topic: Mac filtering / restrication on wireless network
Replies: 13
Views: 2986

Re: Mac filtering / restrication on wireless network

the reply-only should be set on the interface that are facing your customer (wlan) not ether thanx shielder for your replay and for your time give to me i tried your solution but still i can communicate with the router i follow these steps 1 i creat arp table where i put the mac and ip than i make ...
by imrankosi
Sat Oct 18, 2008 6:56 pm
Forum: Beginner Basics
Topic: Mac filtering / restrication on wireless network
Replies: 13
Views: 2986

Re: Mac filtering / restrication on wireless network

static ARP should be good enough for you. try to set your interface ARP to "reply-only", that way, no more dynamic ARP, only allowed mac could ping your gateway,but you need to define each mac-address of your client to specific ip address (ip/arp). i tried arp but it d't work , i make eth...
by imrankosi
Sat Oct 18, 2008 6:55 pm
Forum: Beginner Basics
Topic: Mac filtering / restrication on wireless network
Replies: 13
Views: 2986

Re: Mac filtering / restrication on wireless network

static ARP should be good enough for you. try to set your interface ARP to "reply-only", that way, no more dynamic ARP, only allowed mac could ping your gateway,but you need to define each mac-address of your client to specific ip address (ip/arp). i tried arp but it d't work , i make eth...
by imrankosi
Fri Oct 17, 2008 11:38 pm
Forum: Beginner Basics
Topic: latecny prob
Replies: 3
Views: 1612

latecny prob

i have 532 and it has near about 30 registared clients i am facing a major prob that is latency start incrasing end with drops it happens mostly in noon time where is the prob. please help me



waiting for reply
imran khan
by imrankosi
Thu Oct 16, 2008 12:18 pm
Forum: Beginner Basics
Topic: Mac filtering / restrication on wireless network
Replies: 13
Views: 2986

Re: Mac filtering / restrication on wireless network

do hav yahoo messenger.? and yahoo messenger ID?
yes
did u have solution for my prob
by imrankosi
Thu Oct 16, 2008 12:16 pm
Forum: Beginner Basics
Topic: Mac filtering / restrication on wireless network
Replies: 13
Views: 2986

Re: Mac filtering / restrication on wireless network

do hav yahoo messenger.? and yahoo messenger ID?
yes
by imrankosi
Thu Oct 16, 2008 11:58 am
Forum: Beginner Basics
Topic: Mac filtering / restrication on wireless network
Replies: 13
Views: 2986

Re: Mac filtering / restrication on wireless network

are u frm KOSI which is near to MATHURA
yes who is this
well are u a ISP and are u attached wid sify..
will you tell me about ur self
by imrankosi
Thu Oct 16, 2008 11:34 am
Forum: Beginner Basics
Topic: Mac filtering / restrication on wireless network
Replies: 13
Views: 2986

Re: Mac filtering / restrication on wireless network

are u frm KOSI which is near to MATHURA
yes who is this
by imrankosi
Thu Oct 16, 2008 9:41 am
Forum: Beginner Basics
Topic: Blocking Port Scanners
Replies: 1
Views: 1179

Blocking Port Scanners

hi

i want to restrict port scanning softwares as they harm our clients. I tried a lot but d't find the solution for this. HELP ME


IMRAN KHAN
919219533213
by imrankosi
Thu Oct 16, 2008 9:37 am
Forum: Beginner Basics
Topic: Mac filtering / restrication on wireless network
Replies: 13
Views: 2986

Mac filtering / restrication on wireless network

hi every one,
i want to restrict users from mac those who change there mac addressesand their IP and creat troble to me(my network is on wireless).Please provide me the solution for this


waiting for replay

Imran Khan