![snort logo](/images/snort-logo.png)
Snort mailing list archives
Re: Logging Reassembled Packets
From: Martin Roesch <roesch () sourcefire com>
Date: Fri, 14 Mar 2008 10:02:06 -0400
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I haven't looked at tcpdump's code in a long time but I think Daemonlogger and tcpdump's performance will be very similar. I haven't taken any pains to accelerate anything in Daemonlogger, it's simply an interface between libpcap, libdnet and the disk. IIRC, tcpdump when in "-w" mode wrote pretty directly to the disk with almost no code overhead if it wasn't being asked to do anything else. The chief advantage of Daemonlogger is that it's only about 900 lines of code and it probably has more logfile management features than tcpdump, although I haven't been keeping up with recent releases of that codebase. -Marty On Mar 14, 2008, at 12:07 AM, Jeremy wrote:
Not trying to steal the thread here, but I have to ask since I have never really stress tested damonlogger. Do you all think it performs better than tcpdump at writing packets to disk? This never crossed my mine to evaluate before now, as I have only used damonlogger to play traffic out another interface.... If yes, any document on this claim out there? Running to Google now to see if I can't find something on this while I wait for responses ;) --jeremy On Thu, Mar 13, 2008 at 8:40 PM, Martin Roesch <roesch () sourcefire com> wrote:-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Correction. You should use Daemonlogger! :) -Marty On Mar 13, 2008, at 8:20 PM, Jason wrote:snort is not intended to log full reassembled streams, it is intended to detect intrusion attempts and log the relevant data associated with those attempts. If you want full session logging you should use tcpdump. Kamran Shafi wrote:I notice that there is a show_rebuilt_packets option in steam5_global configuration, which I have turned on but don't know if it is producing anything. I run snort on some traffic collected on a web/dns/mysql server using -r flag. The log shows that snort filters out the server's response and keeps only the inbound traffic - I am not sure if this behaviour is because of the stream 5 processor or else? On Fri, Mar 14, 2008 at 12:56 AM, Joel Esler <joel.esler () sourcefire comwrote:Again, a visit to the readme's in the doc/ directory should help you. Look up "log_flushed_streams" in the stream4 readme. Joel On Mar 13, 2008, at 2:36 AM, Kamran Shafi wrote: Hi All, Is there a way to log the reassembled (TCP/UDP/ICMP) sessions in Snort? -- Regards Kam ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/_______________________________________________ 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 -- Joel Esler joel.esler () sourcefire com------------------------------------------------------------------------ ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ ------------------------------------------------------------------------ _______________________________________________ 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------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ 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- -- Martin Roesch - Founder/CTO, Sourcefire Inc. - +1-410-290-1616 Sourcefire - Security for the Real World - http://www.sourcefire.com Snort: Open Source IDP - http://www.snort.org -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (Darwin) iD8DBQFH2degqj0FAQQ3KOARAoGaAJ0Qunysz07riv/NwgSEyvkXuaKmvwCfRmjD 9vfsXaAbtb93a6aPRD4QPso= =dxrz -----END PGP SIGNATURE----- ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ 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------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ 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
- -- Martin Roesch - Founder/CTO, Sourcefire Inc. - +1-410-290-1616 Sourcefire - Security for the Real World - http://www.sourcefire.com Snort: Open Source IDP - http://www.snort.org -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (Darwin) iD8DBQFH2oVeqj0FAQQ3KOARAqIFAJ4ut4S/IUJAnMA6BNkAyDtrLB/hSACeLs+3 Dfumb249lxumVuVDMEJrkMw= =D0iq -----END PGP SIGNATURE----- ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ 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:
- Re: Logging Reassembled Packets, (continued)
- Re: Logging Reassembled Packets Joel Esler (Mar 13)
- Re: Logging Reassembled Packets Kamran Shafi (Mar 13)
- Re: Logging Reassembled Packets Jason (Mar 13)
- Re: Logging Reassembled Packets Martin Roesch (Mar 13)
- Re: Logging Reassembled Packets Jeremy (Mar 13)
- Re: Logging Reassembled Packets Will Metcalf (Mar 13)
- Re: Logging Reassembled Packets Kamran Shafi (Mar 14)
- Re: Logging Reassembled Packets Patrik Nordlén (Mar 14)
- Re: Logging Reassembled Packets Martin Roesch (Mar 14)
- Re: Logging Reassembled Packets John Curry (Mar 14)
- Re: Logging Reassembled Packets Kamran Shafi (Mar 13)
- Re: Logging Reassembled Packets Joel Esler (Mar 13)
- Re: Logging Reassembled Packets Martin Roesch (Mar 14)