AT&T Broadband is telling cable modem customers who have been getting multiple IP addresses for free to pay up or risk having their addresses shut off. The company sent a letter last month to ...

I just put in a new mail server (RH 7.3, latest Postfix, Bind 9, etc.). I've got multiple IPs on one of the network adaptors, one for mail.domain.com, one for ns1.domain.com, and one as a mnagement IP ...

I am reconfiguring my OpenBSD router to add in a web server to handle multiple domains.<BR><BR>I have 4 IP addresses at my disposal.<BR><BR>One will be used for NAT'ing internal traffic, so the other ...

When you use IPTables to create a firewall for your company's Web server, one way to prevent certain users from accessing the server is to block their IP addresses. Use the "iptables" command to ...