Snort mailing list archives
RE: (no subject)
From: "Lodin, Steven {GZ-Q~Mannheim}" <STEVEN.LODIN () Roche COM>
Date: Mon, 07 Jan 2002 15:43:40 +0100
I have googled "vecna scan" and haven't come up with anything of import. Can anyone point me in the right direction to solve this?
I've never seen this alert, but all my snorts are inside. This shows up in spp_stream4.c as: case TH_URG: case TH_PUSH: case TH_FIN|TH_URG: case TH_PUSH|TH_FIN: case TH_URG|TH_PUSH: if(s4data.ps_alerts) { /* vecna scan */ SetEvent(&event, GENERATOR_SPP_STREAM4, STREAM4_STEALTH_VECNA_SCAN, 1, 0, 5, 0); strlcpy(alert_msg, "spp_stream4: STEALTH ACTIVITY " "(Vecna scan) detection", STD_BUF); alert = 1; do_detect = 0; } insert = 0; break; Similar case statements address XMAS scans, nmap scans, etc.
The 1.7.x NIDS does not show the Vecna Scan - no rule for it; I am on a totally switched network - my question is HOW IN THE HECK CAN MY HIDS SEE THIS SCAN?
Hmmmm... I can't answer that. Occasionally, I also pick up alerts for traffic that I shouldn't see. My assumption is that the switch is not perfect and some traffic is broadcast over many switch ports. I would like a better answer also. Steve _______________________________________________ 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:
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- Re: (no subject) John Sage (Jan 07)
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- <Possible follow-ups>
- RE: (no subject) Lodin, Steven {GZ-Q~Mannheim} (Jan 07)
- (no subject) J.M. Cocchini (Jan 09)
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- Re: (no subject) Ian Masters (Jan 16)
- Remote collection of data from a Snort sensor in stealth mode Ian Masters (Jan 16)
- Re: Remote collection of data from a Snort sensor in stealth mode Ian Masters (Jan 16)
- Re: Remote collection of data from a Snort Guillaume (Jan 16)
- Re: Remote collection of data from a Snort sensor in stealth mode Erek Adams (Jan 16)