Closing Ports on single server with multiple IP's?
Jorge Santos
jorge.santos at deltasoft.pt
Wed Jul 27 16:13:32 UTC 2005
Hi
U can use iptables or define on each service which ip address it will
listen on
But perhaps the best way is iptables
ex:
iptables -A INPUT -i eth0 --dport 25 -j ACCEPT
iptables -A INPUT -i eth0:0 --dport 25 -j DROP
iptables -A INPUT -i eth0:1 --dport 25 -j ACCEPT
and so on
JS
On Wed, 2005-07-27 at 10:59 -0500, Lonnie Cumberland wrote:
> Hi All,
>
> We have a server set up with multiple IP's aliased to it through eth0:1,
> eth0:2, etc.....
>
> Each (aliased) IP currently has the same ports open on it as the others
> and I want to turn off some of the ports on all of the IP except for
> what IP is being used.
>
> For example we have SMTP on port 25 which should be listening only on 2
> of our IP's and not on the rest of them as well.
>
> How can I turn of various ports from listening on these IP's?
>
> --
> Thanks,
>
> Lonnie Cumberland
>
>
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