Snort mailing list archives
Re: Large receive offload, good or bad?
From: Peter Bates <peter.bates () ucl ac uk>
Date: Thu, 30 Aug 2012 16:43:52 +0100
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello all Interesting topic, as I've been pondering the same thing this week. On 30/08/2012 15:59, Joel Esler wrote:
If I was deploying an I[DP]S I would investigate using a operating system and network card that supports zero copy bpf sockets. This will save you much more CPU time than using LRO and have much more predictable results.
Can the VRT member who is not on the list expand a bit more on this? Are we talking *BSD, Linux AF_PACKET with fanout, PF_RING, ? I've been exploring increasing the buffer size with the AF_PACKET DAQ this week only to find it errors when set to 4Gb or more. - -- Peter Bates Senior Computer Security Officer Phone: +44(0)2076792049 Information Services Division Internal Ext: 32049 University College London London WC1E 6BT -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (MingW32) Comment: Using GnuPG with Mozilla - http://www.enigmail.net/ iQEcBAEBAgAGBQJQP4o4AAoJELhVoVpEMS6RmpsIAIcy6C41W3St9x4hKqDgUwPb U+SBccVkl5bx53y3e8aUjKfjhqjoBxT9ylTY5kTeBg4KpHItHx7ihRvZrV67gmrN louVg6hgXZGmVM/IJZr4TSPhsLgDunwbR2zpbb1oEhyyHnpn8w8N/CYN6Gxd5qpv 9jhEFyeAlJA1R/ejhj7SNTbvcLr/i8sDDzLQCqLHzhHNrHoJIj+EHffZwLOoLQyX 7XGTifR5smcnD8V7HknxinW+1G/d4/8TAhfTgw/zlR65GIZoViBV2ViSZJZC7Nar KV42iNCeQM3v1Tsrm4N2lueQdLMQISY+0rlidjXURqYtKywpL4YVuU+pHt1T80o= =dQh5 -----END PGP SIGNATURE----- ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ 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 Please visit http://blog.snort.org to stay current on all the latest Snort news!
Current thread:
- Large receive offload, good or bad? elof (Aug 30)
- Re: Large receive offload, good or bad? Joel Esler (Aug 30)
- Re: Large receive offload, good or bad? Peter Bates (Aug 30)
- Re: Large receive offload, good or bad? Joel Esler (Aug 30)