Snort mailing list archives
Re: Snort inline extremely slow packet forwarding
From: Michael Altizer <xiche () verizon net>
Date: Fri, 15 Jul 2011 15:14:47 -0400
Correct. The inline mode of the AFPacket DAQ module handles all of the packet forwarding. By putting those interfaces in a bridge, you are retransmitting every packet a second time in addition to all of the other overhead associated with Linux bridges. On 07/15/2011 03:05 PM, Hussein Bahaidarah wrote:
Yes, I am bridging them in linux. This is what assumed should be done. Do you imply that I should break the bridge? will snort do the bridging instead? Eth1 is not used and not connected to any thing. [root@IPS ~]# brctl show bridge name bridge id STP enabled interfaces br0 8000.0010184d122c no eth3 eth2 Thanks, On Jul 15, 2011, at 9:50 PM, Michael Altizer wrote: On 07/15/2011 02:41 PM, Hussein Bahaidarah wrote:Thanks Rmkml for help, I found a work around and I don't understand how and why it did work. First, let me explain my configuration: eth2 and eth3 are bridged and snort IP should run on them eth1 is not used when I use: "snort -N -K none -k notcp -c rules/inline -A console --daq afpacket -i eth3:eth2 -Q" the slowness problem appear my work around is to use " snort -N -K none -k notcp -c rules/inline -A console --daq afpacket -i eth3:eth1 -Q ". This works fine though eth1 is not used!!A couple questions: What do you mean by "eth2 and eth3 are bridged"? You're not putting them into a Linux bridge (with brctl), right? Why is eth1 not being used in the second scenario?
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- Re: Snort inline extremely slow packet forwarding Hussein Bahaidarah (Jul 15)
- Re: Snort inline extremely slow packet forwarding Michael Altizer (Jul 15)
- Re: Snort inline extremely slow packet forwarding Hussein Bahaidarah (Jul 15)
- Re: Snort inline extremely slow packet forwarding Michael Altizer (Jul 15)
- Re: Snort inline extremely slow packet forwarding Hussein Bahaidarah (Jul 15)
- Re: Snort inline extremely slow packet forwarding Michael Altizer (Jul 15)
- Re: Snort inline extremely slow packet forwarding Hussein Bahaidarah (Jul 15)
- Re: Snort inline extremely slow packet forwarding Hussein Bahaidarah (Jul 15)
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- Re: Snort inline extremely slow packet forwarding Hussein Bahaidarah (Jul 15)