Snort mailing list archives
S5: Session exceeded configured max bytes
From: Jason Haar <Jason.Haar () trimble co nz>
Date: Mon, 14 Dec 2009 10:35:02 +1300
Hi there Some of our snort-2.8.5.1 IDS systems are generating the following after they've been running for "a while" (hours or days - we haven't diagnosed it further) S5: Session exceeded configured max bytes to queue 1048576 using 1048641 bytes (client queue). I think that refers to max_queued_bytes? Can someone explain how this queue can become full? I'm wondering if its related to network load? I'm guessing here, but is it lots of simultaneous tcp sessions leading to per-session queues growing - which means if more data is coming in that can be quickly dealt with, you end up with this queue being exceeded? What's the impact of increasing max_queued_bytes? More memory used of course, but (again, guessing) increasing could help you around bursts - but probably not around prolonged intense traffic flows? So if you don't have a burst problem, then that would imply your hardware isn't up to the load? (ie need more RAM and/or faster CPU, bus/whatever) I hope my guesses are right there - otherwise it's a lot of blather about nothing ;-) Thanks -- Cheers Jason Haar Information Security Manager, Trimble Navigation Ltd. Phone: +64 3 9635 377 Fax: +64 3 9635 417 PGP Fingerprint: 7A2E 0407 C9A6 CAF6 2B9F 8422 C063 5EBB FE1D 66D1
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Current thread:
- S5: Session exceeded configured max bytes Jason Haar (Dec 13)
- Re: S5: Session exceeded configured max bytes Joel Esler (Dec 13)
- Re: S5: Session exceeded configured max bytes Jason Haar (Dec 13)
- Re: S5: Session exceeded configured max bytes Joel Esler (Dec 13)