I have a customer who has a simple Linux box that was not set up with iptables. It's a simple RH 3EL box that only has a web server, ftp, and ssh. Lately, she has been getting HAMMERED by ftp and cgi ...

Linux's iptables allows powerful firewalls to be implemented at a minute fraction of the cost of many commercial offerings. Basic iptables firewalls are packet filters, which means they inspect the ...

Most of us think of iptables strictly as a firewall tool for keeping remote attackers at bay. But did you know it also can be used to keep local users in line? The experimental match extension owner ...

Iptables, more properly referred to as “iptables/netfilter” because of the two modules that are involved — the userspace module “iptables” and the kernel ...

And now I can't use it, since switching to an iptables-based, kernel 2.4.7 homebrew firewall.<P>I would use the netstat -Mc command to monitor all traffic coming in and going out of the office. It ...