Snort mailing list archives
RE: ICMP Packets.
From: Rich Adamson <radamson () routers com>
Date: Tue, 27 Aug 2002 02:43:20 -0600
Anybody recognize this payload? It is part of an ICMP packet. I have searched google and haven't found any reason why I would see this data in an ICMP echo packet. Awfull suspicous.... FF D8 FF FE 00 08 57 41 4E 47 32 02 FF E0 00 10 ......WANG2..... 4A 46 49 46 00 01 01 01 00 60 00 60 00 00 FF DB JFIF.....`.`.... 00 43 00 10 0B 0C 0E 0C 0A 10 0E 0D 0E 12 11 10 .C.............The JFIF is part of the header information in a JPEG image file. If somebody is really tunneling image files through an ICMP connection that is definitely not good (who knows what else is moving that way).
Another possibility is an application that is communicating license data. The old Chameleon IP stack from NetManage.com use to do something like that. They embeded their coded serial number in an icmp packet and sent it to a broadcast address. All other copies of their software listened for the coded icmp, and if the serial number matched, disabled the software since it was an illegal copy. Are the source and destination addresses within your network? ------------------------------------------------------- This sf.net email is sponsored by: OSDN - Tired of that same old cell phone? Get a new here for FREE! https://www.inphonic.com/r.asp?r=sourceforge1&refcode1=vs3390 _______________________________________________ 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:
- ICMP Packets. larosa, vjay (Aug 26)
- Re: ICMP Packets. Skip Carter (Aug 26)
- Re: ICMP Packets. Jim Burwell (Aug 26)
- <Possible follow-ups>
- RE: ICMP Packets. larosa, vjay (Aug 26)
- Re: ICMP Packets. Jason Haar (Aug 26)
- RE: ICMP Packets. Rich Adamson (Aug 27)
- RE: ICMP Packets. larosa, vjay (Aug 27)
- RE: ICMP Packets. larosa, vjay (Aug 27)
- Re: ICMP Packets. Vinay A. Mahadik (Aug 27)
- Re: ICMP Packets. Matt Kettler (Aug 29)
- Re: ICMP Packets. Vinay A. Mahadik (Aug 27)
- RE: ICMP Packets. larosa, vjay (Aug 29)