Ipchains or Iptables

Can anyone comment on either ipchains or iptables. I know that iptables is meant to replace ipchains. I also know that SuSE has a new firewall in the works to take advantage of iptables. I believe it is still in the beta stage. Is iptables built into the 2.4 kernel, or must it be intstalled seperately? CrazyD __________________________________________________ Do You Yahoo!? Get email at your own domain with Yahoo! Mail. http://personal.mail.yahoo.com/