Re: Exchange server and Cisco Access Lists

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From: Ryan Sokolowski [Microsoft] (ryansok_at_online.microsoft.com)
Date: 10/08/04 

Date: Thu, 7 Oct 2004 17:47:17 -0700

Port 25 is SMTP and Port 110 is POP...Can you simply specify a service in
your access list and not have to give a port number or range? This may
depend on the version of Cisco IOS that you're running on your routers... 

-- 
Ryan Sokolowski
MCSE, CCNA, CCDA, BCFP
Microsoft Enterprise Engineering Center
This posting is provided "AS IS" with no warranties, and confers no rights.
"Maluco" <churrasco.cerveja@gmail.com> wrote in message
news:8d95007.0410071642.2270cda1@posting.google.com...
> I want to know which ports do i have to open on my Cisco router in
> order to send and receive emails from/to my exchange server. Here is
> how it is set up:
>
> I have a Exch. Server behind a firewall. My firewall is connected to a
> Cisco router. I am using NAT on my firewall.
>
> I set up two access list on the router:
> access-list 101 permit tcp any host xxx.xxx.xxx.xxx eq smtp (in)(its
> public ip)
> access-list 101 permit tcp host xxx.xxx.xxx.xxx any eq smtp (out)
>
> I can send emails without a problem but i cannot receive any emails
> originated from the internet.
>
> What ports do i still have to open.
>
> Thanks for the help.

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