Debian Security Advisory DSA 580-1
  http://www.debian.org/security/   Martin Schulze
  November 1st, 2004 http://www.debian.org/security/faq

Package : iptables
  Vulnerability : missing initialisation
  Problem-Type : local
  Debian-specific: no
  CVE ID : CAN-2004-0986
  Debian Bug : 219686

Faheem Mitha noticed that the iptables command, an administration tool
  for IPv4 packet filtering and NAT, did not always load the required
  modules on it own as it was supposed to. This could lead to firewall
  rules not being loaded on system startup. This caused a failure in
  connection with rules provided by lokkit at least.

For the stable distribution (woody) this problem has been fixed in
  version 1.2.6a-5.0woody2.

For the unstable distribution (sid) this problem has been fixed in
  version 1.2.11-4.

We recommend that you upgrade your iptables package as follow:
  apt-get update
  apt-get install iptables