Security Incidents mailing list archives
Re: New Trojan
From: Russell Fulton <r.fulton () auckland ac nz>
Date: Wed, 29 Oct 2003 16:33:41 +1300
On Wed, 2003-10-29 at 07:17, Damian Gerow wrote:
I also just completed a UDP port scan of the infect host, which was completely useless. My screen buffer only goes back so far, but every port from 64367 and up is marked as 'open'. :(
I have little faith in UDP scans because lack of response is taken as meaning the port is open. UDP scanning works on the principle that closed port should send back a ICMP port unreachable. If the port is filtered or packet dropped anywhere along the path or the machine does not respond with the expected unreachable or the unreachable gets filtered or dropped then the port will show as open. You probably know all this but, just in case... -- Russell Fulton, Network Security Officer, The University of Auckland, New Zealand. --------------------------------------------------------------------------- Network with over 10,000 of the brightest minds in information security at the largest, most highly-anticipated industry event of the year. Don't miss RSA Conference 2004! Choose from over 200 class sessions and see demos from more than 250 industry vendors. If your job touches security, you need to be here. Learn more or register at http://www.securityfocus.com/sponsor/RSA_incidents_031023 and use priority code SF4. ----------------------------------------------------------------------------
Current thread:
- RE: New Trojan, (continued)
- RE: New Trojan Lucretia (Oct 28)
- RE: New Trojan Harlan Carvey (Oct 27)
- RE: New Trojan Rob Shein (Oct 25)
- RE: New Trojan Tiago Halm (Oct 26)
- Re: New Trojan Damian Gerow (Oct 27)
- RE: New Trojan Rob Shein (Oct 28)
- Re: New Trojan Damian Gerow (Oct 28)
- Re: New Trojan Brian Eckman (Oct 28)
- Re: New Trojan Damian Gerow (Oct 28)
- Re: New Trojan Damian Gerow (Oct 28)
- Re: New Trojan Russell Fulton (Oct 28)
- RE: New Trojan Rob Shein (Oct 28)
- RE: New Trojan Jerry Heidtke (Oct 25)
- RE: New Trojan John Ives (Oct 26)
- Re: New Trojan Grzegorz (Oct 25)
- Re: New Trojan Harlan Carvey (Oct 27)
- Re: New Trojan sean (Oct 25)
- Re: New Trojan Jay Castaldo (Oct 27)
- Re: New Trojan Damian Gerow (Oct 27)
- RE: New Trojan Chris Fussell (Oct 27)
- RE: New Trojan Tran, John (Oct 27)
- Re: New Trojan Damian Gerow (Oct 27)