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Re: dual IP
Dear Brian Candler,
Thank you for your kind message. I want to filter to dial in users. We
have Cisco 2500 series router. I would appreciate if you could kindly
give me an example to set filter for dial in users for limiting to e-mail
only on NAS in which they dial into.
Thanking you for your kind help.
Mohan Raj Pradhan
Date sent: Tue, 22 May 2001 12:32:02 +0100
From: Brian Candler <B.Candler@pobox.com>
Copies to: email@example.com
Subject: Re: dual IP
> On Tue, May 22, 2001 at 05:58:08AM +0530, firstname.lastname@example.org wrote:
> > I want to ask one more question.
> > I want give to some of the users POP account but limit to them only e-
> > mail. How to set for this in the router?
> Put your E-mail-only users in a separate IP range. Set up packet filters on
> their upstream router, so that packets from their IP addresses can only be
> to TCP port 25 (SMTP), TCP port 110 (POP3) and UDP port 53 (DNS).
> Exactly how to do this depends on what type of equipment you have, and how
> those users are connected. For example, if they are dial-in users, you
> probably want to put these filters on the NAS which they dial into.
> Some NASes even allow you to set up filters in RADIUS attributes, which
> means you don't even need to put those users in a separate IP range.