Snort mailing list archives
Re: snort detects portscan?
From: Joe McAlerney <joey () SiliconDefense com>
Date: Tue, 19 Jun 2001 16:36:53 -0700
The portscan preprocessor is detecting "stealth" packets. They will be alerted on regardless of whether or not you have the source host defined in portscan-ignorehosts. There are some good examples of why this occurs in the archives of this mailing list. Most recently, it is caused by ENC packets with Linux 2.4 kernels. -Joe M. -- | Joe McAlerney joey () silicondefense com | | Silicon Defense - Technical Support for Snort | | http://www.silicondefense.com/ | +-- --+ alexus wrote:
un 19 19:05:26 box snort: spp_portscan: portscan status from 216.27.143.184: 2 connections across 1 hosts: TCP(1), UDP(1) STEALTH Jun 19 19:05:26 box /kernel: Jun 19 19:05:26 box snort: spp_portscan: portscan status from 216.27.143.184: 2 connections across 1 hosts: TCP(1), UDP(1) STEALTH Jun 19 19:05:30 box snort: spp_portscan: End of portscan from 216.27.143.184: TOTAL time(1s) hosts(1) TCP(1) UDP(1) STEALTH Jun 19 19:05:30 box /kernel: Jun 19 19:05:30 box snort: spp_portscan: End of portscan from 216.27.143.184: TOTAL time(1s) hosts(1) TCP(1) UDP(1) STEALTH i'm geting this in my syslog like every other 10 minutes.. i know that ip is not portscaning me 'cause i wouldn't portscan myself:) any ideas what could cause that? as far as i can tell i do have a bit of communication between my box and that pc .. that's dns .. but then again why is it doing every 10 minutes? and in snort.conf i put into var DNS_SERVERS i put this ip.. _______________________________________________ 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
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Current thread:
- snort detects portscan? alexus (Jun 19)
- Re: snort detects portscan? Joe McAlerney (Jun 19)
- Re: snort detects portscan? alexus (Jun 19)
- Message not available
- Re: snort detects portscan? alexus (Jun 20)
- Re: snort detects portscan? alexus (Jun 19)
- Re: snort detects portscan? Joe McAlerney (Jun 19)