Snort mailing list archives
Snort Inline incompatible libipq???
From: spiderslack <spiderslack () yahoo com br>
Date: Tue, 21 Sep 2010 11:07:35 -0400
Hello people. I've been testing snort inline mode using bridge. I installed Ubuntu I installed 10.04 and ran snort the following commands to boot. modprobe ip_queue iptables -I FORWARD -p tcp --dport 3389 -j QUEUE /usr/sbin/snort -m 027 -D -Q -l /var/log/snort -u snort -g snort -c /etc/snort/snort.conf -S HOME_NET=[192.168.0.0/24] -i br0 However when trying to access a server via terminal service behind snort does not work, only works when the remove rule iptables. After some analysis and wireshark iptraf noticed by only the SYN packet sent and nothing more. Then I began to seek help on google and found the following link. http://www.linuxquestions.org/questions/linux-networking-3/netfilter-problem-compiling-libipq-example-807418/ Where a user said. ----------------------------------------------------------------- If libipq is not used for linux 2.6.x what's the alternative to be able to use netfilter? should use the new libnetfilter_queue library instead. You can find documentation and code examples at http://www.nufw.org/doc/libnetfilter_queue/index.html Maybe it's possible to use the old libipq but its now deprecated and much of the network system has changed in the recent kernels. I don't recommend libipq. --------------------------------------------------------------- If the assertion that the 2.6 kernel no longer uses libipq and should use the libnetfilter_queue, if this is true could be the cause of the problem. I imagine that means the rule of queuing netfilter throws the packet to the queue in userspace but there is no software to be able to reply NF_ACCEPT, NF_DROP snort up there but the kernel does not use more libipq not correctly interpret "commands "NF_ACCEPT or NF_DROP. If the 2.6 kernel does not use more libipq. only libnetfilter_queue commands via libipq not snort are being interpreted and the data packets are failing in QUEUE forever. To draw that conclusion anyone know any command or via /proc viewing the queue to see if the data packets is going there? I'm trying to compile a code in C to give only one NF_ACCEPT in any data packets to queue to check it if I'm correct. But if someone has been there or have any idea of the problem or where it may be wrong, I thank you. Regards. __________________________________________________ Fale com seus amigos de graça com o novo Yahoo! Messenger http://br.messenger.yahoo.com/ ------------------------------------------------------------------------------ Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing. http://p.sf.net/sfu/novell-sfdev2dev _______________________________________________ Snort-users mailing list Snort-users () lists sourceforge net Go to this URL to change user options or unsubscribe: https://lists.sourceforge.net/lists/listinfo/snort-users Snort-users list archive: http://www.geocrawler.com/redir-sf.php3?list=snort-users
Current thread:
- Snort Inline incompatible libipq??? spiderslack (Sep 21)
- Re: Snort Inline incompatible libipq??? Tomas Heredia (Sep 21)
- Re: Snort Inline incompatible libipq??? spiderslack (Sep 21)
- Re: Snort Inline incompatible libipq??? Tomas Heredia (Sep 21)
- Re: Snort Inline incompatible libipq??? spiderslack (Sep 21)
- Re: Snort Inline incompatible libipq??? Tomas Heredia (Sep 21)
- Re: Snort Inline incompatible libipq??? spiderslack (Sep 21)
- Re: Snort Inline incompatible libipq??? Shaqe Wan (Sep 22)
- Re: Snort Inline incompatible libipq??? Tomas Heredia (Sep 22)
- Re: Snort Inline incompatible libipq??? spiderslack (Sep 22)
- Re: Snort Inline incompatible libipq??? Tomas Heredia (Sep 22)
- Re: Snort Inline incompatible libipq??? spiderslack (Sep 21)
- Re: Snort Inline incompatible libipq??? Tomas Heredia (Sep 21)