REPOST: nfnetlink / ctnetlink / iptables2 questions
NOTE: I'm reposting this as I never got a response. I independently posted to both netfilter and netfilter-devel before, but am now posting to both. Hopefully _someone_ can answer this.
Hey folks,
A while back Herald Welte emailed me (and CC'd the list) and suggested I port my application (iptstate) to use the new ctnetlink/nfnetlink framework (as opposed to reading data out of /proc).
I haven't had much time since then, but I decided to sit down and look at this, and I'm a bit confused by what I found. I found libnfnetlink here:
http://ftp.iasi.roedu.net/netfilter/libnfnetlink/snapshot/
and libctnetlink here:
http://ftp.iasi.roedu.net/netfilter/libctnetlink/snapshot/
And since cfnetlink requires nfnetlink, I went to compile that first. And ran into some problems. So I started browsing the archives, and it seems people refer to an old "ctnetlink/nfnetlink" and a new one... and the new one is part of "iptables2" ? I haven't followed netfilter/iptables developement very carefully, so I don't know what iptables2 is, but seems to be the latest suite of "frontend" applications to netfilter.
At the very least, libnfnetlink requires nfnetlink.h, which I would have thought was part of libnfnetlink, but it appears it's not. I found a mention of a "release" of iptables2 here:
http://lists.netfilter.org/pipermail/netfilter/2001-November/016646.html
but the download requires a password which I don't have. Additionally the post talkes about a whole lot of kernel incompatibilities between old versions and new versions and it doesn't appear the latest versions have made it into the main kernel tree yet. Is this correct? If so, this doesn't actually sound like something ready for primetime yet...
Perhaps someone can relate ctnetlink/nfnetlink (old and new) to libcfnetlink/libnfnetlink and iptables2, and the current kernels for me?
Thanks...
Signature · 7 lines
Phil Dibowitz [email protected] Freeware and Technical Pages Insanity Palace of Metallica http://www.phildev.net/ http://www.ipom.com/ "They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." - Benjamin Franklin, 1759
Quoted 1 line · Phil Dibowitz
At the very least, libnfnetlink requires
nfnetlink.h, which I would have thought was part of libnfnetlink, but it appears it's not.
It is included as part of the required nfnetlink-ctnetlink kernel patch.
Regards
Henrik
Quoted 6 lines · Henrik Nordstrom
Quoted 1 line · Phil Dibowitz
At the very least, libnfnetlink requires
nfnetlink.h, which I would have thought was part of libnfnetlink, but it appears it's not.It is included as part of the required nfnetlink-ctnetlink kernel patch.
Hey, that's a start, thanks. Can you tell me where this kernel patch is?
I haven't found such a patch....
Signature · 7 lines
Phil Dibowitz [email protected] Freeware and Technical Pages Insanity Palace of Metallica http://www.phildev.net/ http://www.ipom.com/ "They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." - Benjamin Franklin, 1759
Quoted 7 lines · Phil Dibowitz
Quoted 6 lines · Henrik Nordstrom
Quoted 2 lines · Phil Dibowitz
At the very least, libnfnetlink requires
nfnetlink.h, which I would have thought was part of libnfnetlink, but it appears it's not.
Quoted 5 lines
Quoted 1 line
It is included as part of the required nfnetlink-ctnetlink kernel patch.
Hey, that's a start, thanks. Can you tell me where this kernel patch is?
I haven't found such a patch....
it's in patch-o-matic. both patch-o-matic-ng-20040621 and CVS appear to have the same version (0.13):
http://netfilter.org/files/patch-o-matic-ng-20040621.tar.bz2
http://svn.netfilter.org/netfilter/trunk/patch-o-matic-ng/nfnetlink-ctnetlink-0.13/
-j
--
"When will I learn? The answer to life's problems aren't at the bottom
of a bottle, they're on TV!"
--The Simpsons
Quoted 9 lines · Phil Dibowitz
Quoted 6 lines · Henrik Nordstrom
Quoted 1 line · Phil Dibowitz
At the very least, libnfnetlink requires
nfnetlink.h, which I would have thought was part of libnfnetlink, but it appears it's not.It is included as part of the required nfnetlink-ctnetlink kernel patch.
Hey, that's a start, thanks. Can you tell me where this kernel patch is?
patch-o-matic-ng
you can also find the patch in netfilter-ha.
Regards
Henrik