Snort mailing list archives
Re: Snort dumps core on Solaris 8
From: Neil Dickey <neil () geol niu edu>
Date: Thu, 7 Jun 2001 12:56:54 -0500 (CDT)
Phil Wood <cpw () lanl gov> wrote to the IPFilter list:
I've also seen problems with defrag, but have not gotten any confirmation. It is my experience that certain fragment sequences in conjunction with some unknown force cause the creation of mutant packets, that is: IP: proto=icmp (20 byte header) DATA from somewhere in snort memory (not another incoming packet) Makes for some real weird ICMP type / code packets if you are looking for that sort of thing.
I've been seeing alerts like these: ===================================================== [**] PING-ICMP Destination Unreachable [**] 06/03-00:56:43.763294 12.127.237.65 -> xxx.yyy.zzz ICMP TTL:241 TOS:0x0 ID:14290 IpLen:20 DgmLen:56 Type:3 Code:13 DESTINATION UNREACHABLE: PACKET FILTERED ** ORIGINAL DATAGRAM DUMP: xxx.yyy.zzz:25 -> 128.138.77.15:38058 TCP TTL:246 TOS:0x0 ID:24527 IpLen:20 DgmLen:40 12U*PRS* Seq: 0xD1F97B19 Ack: 0x0 Win: 0x0 TcpLen: 0 UrgPtr: 0x0 ** END OF DUMP ====================================================== What particularly interests me is the really unusual collection of flags reported for the original datagram, viz., 12U*PRS* . Is this the sort of thing you are referring to? Best regards, Neil Dickey, Ph.D. Research Associate/Sysop Geology Department Northern Illinois University DeKalb, Illinois 60115 _______________________________________________ Snort-users mailing list Snort-users () lists sourceforge net Go to this URL to change user options or unsubscribe: http://lists.sourceforge.net/lists/listinfo/snort-users Snort-users list archive: http://www.geocrawler.com/redir-sf.php3?list=snort-users
Current thread:
- Snort dumps core on Solaris 8 Tom Kyle (Jun 04)
- <Possible follow-ups>
- RE: Snort dumps core on Solaris 8 Thomas Whipp (Jun 05)
- Re: Snort dumps core on Solaris 8 Tom Kyle (Jun 06)
- Re: Snort dumps core on Solaris 8 Tom Kyle (Jun 07)
- Re: Snort dumps core on Solaris 8 Phil Wood (Jun 07)
- Re: Snort dumps core on Solaris 8 Tom Kyle (Jun 07)
- Re: Snort dumps core on Solaris 8 Tom Kyle (Jun 06)
- Re: Snort dumps core on Solaris 8 Phil Wood (Jun 07)