Cannot connect from ubuntu to Mikrotik RB750GL 5.24 via pptp

RouterOS General
1

Hello everybody!
Problem is that Ubuntu PCs do not connect to Mikrotik using pptp.

I set up my mikrotik router as a pptp server with following parameters in "ppp->pptp server" menu:

Enabled - yes
Max MTU/Max MRU - 1460
MRRU - empty
Keepalive timeout - 10
Default profile - Default
Authentication: pap - on; chap - on; mschap1 - on; mschap2 - on

/ppp aaa> print
use-radius: no
accounting: no
interim-update: 0s/ppp profile> print
Flags: * - default
0 * name="default" local-address=192.168.2.1 use-mpls=default
use-compression=default use-vj-compression=default use-encryption=default
only-one=default change-tcp-mss=yes

3 * name="default-encryption" local-address=192.168.2.1 use-mpls=default
use-compression=default use-vj-compression=default use-encryption=yes
only-one=default change-tcp-mss=default/ppp secret> print
Flags: X - disabled

NAME SERVICE CALLER-ID PASSWORD PROFILE REMOTE-ADDRESS

4 one_mik... pptp xxxxxxxx default-e... 192.168.2.10/ip firewall filter> print
Flags: X - disabled, I - invalid, D - dynamic
5 chain=input action=accept protocol=tcp dst-port=1723
6 chain=input action=accept protocol=greDuring connection attempt following strings goes to log:
Mar/05/2014 18:22:53 pptp,info TCP connection established from 89.xxx.xxx.xxx
Mar/05/2014 18:22:53 pptp,ppp,info : waiting for call...
Mar/05/2014 18:22:53 pptp,debug,packet rcvd Start-Control-Connection-Request from 89.xxx.xxx.xxx
Mar/05/2014 18:22:53 pptp,debug,packet protocol-version=0x0100
Mar/05/2014 18:22:53 pptp,debug,packet framing-capabilities=3
Mar/05/2014 18:22:53 pptp,debug,packet bearer-capabilities=3
Mar/05/2014 18:22:53 pptp,debug,packet maximum-channels=65535
Mar/05/2014 18:22:53 pptp,debug,packet firmware-revision=1
Mar/05/2014 18:22:53 pptp,debug,packet host-name=local
Mar/05/2014 18:22:53 pptp,debug,packet vendor-name=cananian
Mar/05/2014 18:22:53 pptp,debug,packet sent Start-Control-Connection-Reply to 89.xxx.xxx.xxx
Mar/05/2014 18:22:53 pptp,debug,packet protocol-version=0x0100
Mar/05/2014 18:22:53 pptp,debug,packet result-code=1
Mar/05/2014 18:22:53 pptp,debug,packet error-code=0
Mar/05/2014 18:22:53 pptp,debug,packet framing-capabilities=2
Mar/05/2014 18:22:53 pptp,debug,packet bearer-capabilities=0
Mar/05/2014 18:22:53 pptp,debug,packet maximum-channels=0
Mar/05/2014 18:22:53 pptp,debug,packet firmware-revision=1
Mar/05/2014 18:22:53 pptp,debug,packet host-name=MikroTik
Mar/05/2014 18:22:53 pptp,debug,packet vendor-name=MikroTik
Mar/05/2014 18:22:54 pptp,debug,packet rcvd Outgoing-Call-Request from 89.xxx.xxx.xxx
Mar/05/2014 18:22:54 pptp,debug,packet call-id=14019
Mar/05/2014 18:22:54 pptp,debug,packet call-serial-number=0
Mar/05/2014 18:22:54 pptp,debug,packet minimum-bps=2400
Mar/05/2014 18:22:54 pptp,debug,packet maximum-bps=10000000
Mar/05/2014 18:22:54 pptp,debug,packet bearer-type=3
Mar/05/2014 18:22:54 pptp,debug,packet framing-type=3
Mar/05/2014 18:22:54 pptp,debug,packet packet-recv-window-size=3
Mar/05/2014 18:22:54 pptp,debug,packet packet-processing-delay=0
Mar/05/2014 18:22:54 pptp,debug,packet phone-number-length=0
Mar/05/2014 18:22:54 pptp,debug,packet phone-number=
Mar/05/2014 18:22:54 pptp,debug,packet subaddress=
Mar/05/2014 18:22:54 pptp,ppp,debug <89.xxx.xxx.xxx>: LCP lowerup
Mar/05/2014 18:22:54 pptp,ppp,debug <89.xxx.xxx.xxx>: LCP open
Mar/05/2014 18:22:54 pptp,debug,packet sent Outgoing-Call-Reply to 89.xxx.xxx.xxx
Mar/05/2014 18:22:54 pptp,debug,packet call-id=4274
Mar/05/2014 18:22:54 pptp,debug,packet peers-call-id=14019
Mar/05/2014 18:22:54 pptp,debug,packet result-code=1
Mar/05/2014 18:22:54 pptp,debug,packet error-code=0
Mar/05/2014 18:22:54 pptp,debug,packet cause-code=0
Mar/05/2014 18:22:54 pptp,debug,packet connect-speed=100000
Mar/05/2014 18:22:54 pptp,debug,packet packet-recv-window-size=100
Mar/05/2014 18:22:54 pptp,debug,packet packet-processing-delay=0
Mar/05/2014 18:22:54 pptp,debug,packet physical-channel-id=0
Mar/05/2014 18:22:55 pptp,ppp,debug <89.xxx.xxx.xxx>: LCP timer
Mar/05/2014 18:22:55 pptp,ppp,debug,packet <89.xxx.xxx.xxx>: sent <89.xxx.xxx.xxx>: rcvd <89.xxx.xxx.xxx>: sent <89.xxx.xxx.xxx>: rcvd <89.xxx.xxx.xxx>: sent <89.xxx.xxx.xxx>: rcvd <89.xxx.xxx.xxx>: sent LCP ConfReq id=0x1
Mar/05/2014 18:22:55 pptp,ppp,debug,packet <mru 1460>
Mar/05/2014 18:22:55 pptp,ppp,debug,packet <magic 0x205ad5ef>
Mar/05/2014 18:22:55 pptp,ppp,debug,packet
Mar/05/2014 18:22:56 pptp,ppp,debug <89.xxx.xxx.xxx>: LCP timer
Mar/05/2014 18:22:56 pptp,ppp,debug,packet <89.xxx.xxx.xxx>: sent LCP ConfReq id=0x2
Mar/05/2014 18:22:56 pptp,ppp,debug,packet <mru 1460>
Mar/05/2014 18:22:56 pptp,ppp,debug,packet <magic 0x205ad5ef>
Mar/05/2014 18:22:56 pptp,ppp,debug,packet
Mar/05/2014 18:22:58 pptp,ppp,debug <89.xxx.xxx.xxx>: LCP timer
Mar/05/2014 18:22:58 pptp,ppp,debug,packet <89.xxx.xxx.xxx>: sent LCP ConfReq id=0x3
Mar/05/2014 18:22:58 pptp,ppp,debug,packet <mru 1460>
Mar/05/2014 18:22:58 pptp,ppp,debug,packet <magic 0x205ad5ef>
Mar/05/2014 18:22:58 pptp,ppp,debug,packet
Mar/05/2014 18:23:00 pptp,ppp,debug <89.xxx.xxx.xxx>: LCP timer
Mar/05/2014 18:23:00 pptp,ppp,debug <89.xxx.xxx.xxx>: LCP timeout sending ConfReq
Mar/05/2014 18:23:00 pptp,ppp,debug <89.xxx.xxx.xxx>: LCP lowerdown
Mar/05/2014 18:23:00 pptp,ppp,info : terminating...
Mar/05/2014 18:23:00 pptp,ppp,debug <89.xxx.xxx.xxx>: LCP lowerdown
Mar/05/2014 18:23:00 pptp,ppp,debug <89.xxx.xxx.xxx>: LCP down event in starting state
Mar/05/2014 18:23:00 pptp,ppp,info : disconnectedUbuntu client pc has following set up:
/etc/ppp/options.pptp
lock
noauth
refuse-pap
refuse-eap
refuse-chap
refuse-mschap
nobsdcomp
nodeflateBTW, If I enable pap, chap, eap, mschap - nothing changes, it still doesn't connect.

/etc/ppp/chap-secrets

Secrets for authentication using CHAP

client server secret IP addresses

one_mikrotik pptp xxxxxx */etc/ppp/peers/mikrotik
pty "pptp 91.xxx.xxx.xxx --nolaunchpppd"
name one_mikrotik
remotename PPTP
defaultroute
file /etc/ppp/options.pptp
ipparam mikrotikFollowing text I see in ubuntu console:

pon mikrotik debug nodetach

using channel 22
Using interface ppp0
Connect: ppp0 <--> /dev/pts/2
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xc17b4eb> ]
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xc17b4eb> ]
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xc17b4eb> ]
Modem hangup
Connection terminated.
Script pptp 91.xxx.xxx.xxx --nolaunchpppd finished (pid 5150), status = 0x0Please help me to solve this issue.
I should also say, that windows PCs, another mikrotik router and even android and maemo phones can easily connect via pptp.
This problem is the same on two xubuntu 12.04 pcs.

Thank you in advance!

2

I had a possibility to check VPN on RB951 with RouterOS 5.26, but connecting using 192.168.x.x adresses. Result is the same ubuntu pc can’t connect to RB.

3

Problem still exist.
I’ve just upgraded RB to 6.10 and nothing changed (regarding pptp), ubuntu clients attempt to connect, but can’t achieve it.
Read some threads with same problems on other forums, but no solution found.

4

I had similar issues, and they were related to the firewall ports. Did you enable all the required ports for PPTP to work on you mikrotik? The rules you need are:

TCP-1723 and GRE (protocol 47).

I use MSCHAP, that will help with the encryption, CHAP and PAP do not permit traffic to be encrypted.

Hope this helps.

5

Thank you for your reply!
Unfortunately it won’t help, since such rules I’ve already added:

/ip firewall filter> print
Flags: X - disabled, I - invalid, D - dynamic
5 chain=input action=accept protocol=tcp dst-port=1723
6 chain=input action=accept protocol=gre

6

Updated to 6.11 - problem is still the same. May be such ticket was already opened - please, then, point me to it.

7

Was a solution ever found for this issue?