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 > >