View Full Version : Question about Linux Firewall

07-21-2004, 02:38 AM
In windows, a typical firewall program may contain a driver to deal with the datagram processing. What about in Linux? Does it also need to write a Linux driver?

07-21-2004, 06:34 AM
The linux firewall can only be installed via a kernel module or as part of the kernel itself. Look here for info on it, it is called ipchains: http://www.tldp.org/HOWTO/IPCHAINS-HOWTO.html

07-21-2004, 10:26 PM
Where can get some free implementation information about VPN?

07-22-2004, 08:16 PM
Perhapse GOOGLE (http://www.google.com/) might help
search for "Linux VPN" or something


07-23-2004, 10:07 AM
ipchains has been superseded by iptables as of the 2.4 kernel.

07-23-2004, 10:42 AM
ipchains has been superseded by iptables as of the 2.4 kernel.
I KNEW THAT, I am going to slap myself, I looked up the link to the wrong one! Thanks for pointing it out.
The right link:
Thanks CornedBee.

07-25-2004, 12:39 PM
you can also program your own firewall application using netfilter hooks. it comes in handy if you want to implement an own analyzing/detection system. i think there was some phrack issue with an article about that. if not, use google.