Re: linux firewall restrict port 25

This is a discussion on Re: linux firewall restrict port 25 within the Linux Security forums, part of the System Security and Security Related category; "Landman" <eileenlandman@hotmail.com> wrote in message news:3fa4b0a0.0308291112.2c029390@posting.google.c om... > ...

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Re: linux firewall restrict port 25

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08-29-2003

Durk van Veen

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Re: linux firewall restrict port 25

"Landman" <eileenlandman@hotmail.com> wrote in message
news:3fa4b0a0.0308291112.2c029390@posting.google.c om...
> How do I restrict incoming port 25 to accept mail ONLY from a certain
> IP address on my linux firewall?

$IPTABLES -A INPUT -p TCP -s 11.22.33.44 --dport 25 -j ACCEPT

where 11.22.33.44 is the address you want to allow.

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