On Wed, Sep 12, 2012 at 08:27:30PM +0100, Andrew Beverley wrote: > On Tue, 2012-09-11 at 23:08 -0500, Miguel Alejandro González wrote: > > Hello > > > > I'm making a netfilter module and I need to have interaction with > > conntrack, as I understand conntrack is a hash table of all connections > > IPv4 and IPv6. I basically need to know how to do lookups, insertions an > > deletions, can you tell me how do this? If you can give me some > > documentation or code to see how conntrack works and how to achieve what I > > need to do, that would be great > > The "Writing Netfilter Modules" should help you (see part II): > http://inai.de/documents/Netfilter_Modules.pdf > > Of course, there's also libnetfilter_conntrack which includes some good > examples, although it's a userspace library. This should also help to get an overall idea on how is implemented: http://1984.lsi.us.es/~pablo/docs/login06.pdf But you'll have to get ready to read Linux kernel code. Start with net/netfilter/nf_conntrack_core.c Good luck! -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
