i have a problem with Microtik v 2.9 RouterOS.
Our clients behind the my mircotik(that is a router with nat support) could not browse some of web sites.when i change the Public IP Address of wan interface on mircotik,this problem solve.
can anyone help me?Please Please Help me.
i install the microtik v 2.9 On HP Server with this specification:
4092 Mbyte RAM.
Dual Cpu (Intel Zeon 3.0 GHZ).
Two Gigabit Ethernet Interface
Try using the Public IP on a PC for those websites. If problem remain then those IPs has problem, contact with your up-stream.
Rafiq..
thanks a lot for your response.
i can not do this.because if i want set this Public IP Address on my client or other clients i must change the Public MicroTik IP Address and set the last IP Address of Microtik on my Pc.with this way i change the Public MicroTik IP Address and therefor problem solve. 
hi.please help me.this problem for me is very painter.possible i lost my job.please help me. 
it possible that nobdy encounter with this problem.but i encounter with this problem every times.if any body has opinion, please help me.
This still sounds like an IP / routing issue with your upstream or a subnetting issue somewhare..
Also just as an FYI…
You are overkilling yourself on the hardware..
RouterOS 2.9.XX will only use 1 CPU and 1GB of ram.
RouterOS 3X will do multi CPU but has a 2GB memory limit..
Craig
You should try to use one of the Public IPs u had on the wan of the MT and use it on the client, and dont do any NAT to that client, and try and see if that works fine. So you can check if theres any thing wrong with your configuration.
If the client persists with the problem it means that the Public IP you are using might be in a black list of the provider of the pages u cant open.
Dan
hi,
thanks a lot for your reply,but i have not any problem with mikrotik for primery days.all things is very good.but after several days our clients can’t some web sites.i think that those site block my IP.
i suppose that my mikrotik send spam to this site and those block my IP Address.how can i see the output of my mikrotik to special site?
who can help me for view output of Mikrotik?
yup…
you can see traffics from ‘torch’ tool or ‘connection-tracking’ list table