netfilter project logo

Contacting the netfilter/iptables project

You didn't find a satisfying answer to your question with the information available from this web site? You want to get more assistance or further information on netfilter/iptables, it's usage, design or development?


Normally, almost all communication within the project happens on mailinglists. We strongly encourage you to send all questions/comments/suggestions on the use or development of netfilter/iptables to the apropriate mailinglist.

The netfilter bug tracking system

If you think you've found a bug, it is important to report this bug to the netfilter/iptables project. We rely on bug reports of our users in order to improve the quality.

Feature and enhancement requests can also be put into the bug tracking system. This way it is assured that they are not lost.

When to use the bug tracking system?

  • If you think you've found a bug
  • If you have a particular feature request

The netfilter/iptables bug tracking system

The netfilter core team

The netfilter core team is the group of people who actively maintains the netfilter framework. Please note, that this group is very small (currently six people), and with an estimated number of millions of linux installations, we cannot help individual users with their firewall configuration. Regard this contact address as a last resort, if all other options have failed.

When to contact the core team?

  • If you found an important security-relevant bug and want to inform the vendor before releasing any information about it.
  • If you need professional support, development or consulting related to netfilter and iptables.
  • Again, the coreteam will _NOT_ respond to any simple usage/configuration questions. Such kind of questions will be ignored. PLEASE refer to the user mailinglist

You can contact the coreteam via (GPG key)

The netfilter/iptables webmaster

The netfilter webmaster is a volunteer who offers to maintain the netfilter homepage's content. Please report any website-related comments like broken links, typos, suggestions to

Physical Address / Imprint

According to german federal law (§ 6 Teledienste Gesetz), every web site has to have an 'Imprint':

netfilter project
c/o Harald Welte
Glanzstr. 11
12437 Berlin

Copyright © 1999-2014 Harald Welte, Pablo Neira Ayuso . Pablo Neira Ayuso