Snort mailing list archives
Portscan False Positives From My IP Range
From: "Vintinner, M. Scott" <scottv () rbh com>
Date: Mon, 7 Apr 2003 16:27:32 -0400
I'm getting a lot of portscans in my alert file where the source is my network. In this example, it looks like a user behind my firewall is simply accessing a website: [**] [117:1:1] (spp_portscan2) Portscan detected from 64.132.107.3: 21 targets 21 ports in 6 seconds [**] 04/07-16:22:07.580527 0:A0:8E:E:43:48 -> 0:B0:64:54:8A:21 type:0x800 len:0x3C 64.132.107.3:25320 -> 207.171.182.23:80 TCP TTL:127 TOS:0x0 ID:45683 IpLen:20 DgmLen:44 DF ******S* Seq: 0x1AC9FB Ack: 0x0 Win: 0x2000 TcpLen: 24 TCP Options (1) => MSS: 1460 In my snort.conf file, my networks are configured so I would think portscan2 would ignore the traffic since its source is in HOME_NET. var HOME_NET 64.132.107.0/24 var EXTERNAL_NET !64.132.107.0/24 Any suggestions? Will the #preprocessor portscan-ignorehosts: 0.0.0.0 line work for portscan2? M. Scott Vintinner Senior Systems Engineer Robinson Bradshaw & Hinson, P.A. 101 N. Tryon St., Suite 1900 Charlotte, NC 28246 (704) 377-8189 mailto:scottv () rbh com ------------------------------------------------------- This SF.net email is sponsored by: ValueWeb: Dedicated Hosting for just $79/mo with 500 GB of bandwidth! No other company gives more support or power for your dedicated server http://click.atdmt.com/AFF/go/sdnxxaff00300020aff/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:
- Portscan False Positives From My IP Range Vintinner, M. Scott (Apr 07)
- RE: Portscan False Positives From My IP Range Tobias Rice (Apr 07)