Hi, I have a mail server which has two interface eth0[internal], eth1[external]. i want certain ports like 25, 110, 995 will be open for outsider as wel as local, and some port 10000, 5666 , will be open for local only.. , if anyone help me out regarding this... i'm a mail-system guy,so i'm not very much aware of iptables rules, if anyone give me some documentation links for Mailling System related iptables documentation, that will be helpful for me Thank you Tarak Ranjan - To unsubscribe from this list: send the line "unsubscribe netfilter" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html