Security Incidents mailing list archives
Port 113 requests?
From: "Michael Ward" <Mward () roseglen com>
Date: Thu, 6 Dec 2001 13:51:57 -0500
I have been receiving the following entries at my firewall for since noon US Eastern Time (-5:00) on 12/4/01. They have been coming every 15 minutes since then. I notified the owner of the IP's and he hasn't responded yet. Does anyone recognize this and could possibly fill me in on some theories... (Note: I have edited out source and dest. IP info) I just want to know if anyone recognizes the pattern... 12/04/2001 11:59:30.336 - TCP connection dropped - Source:mail.domain-i-edited.com, 40454, WAN - Destination:my.mail.server, 113, LAN - 'Authentication' - Rule 32 12/04/2001 12:00:52.832 - TCP connection dropped - Source:nat24.domain-i-edited.com, 3102, WAN - Destination:my.mail.server, 113, LAN - 'Authentication' - Rule 32 12/04/2001 12:01:54.032 - TCP connection dropped - Source:mail.domain-i-edited.com, 41027, WAN - Destination:my.mail.server, 113, LAN - 'Authentication' - Rule 32 12/04/2001 12:12:16.256 - TCP connection dropped - Source:mail.domain-i-edited.com, 43335, WAN - Destination:my.mail.server, 113, LAN - 'Authentication' - Rule 32 12/04/2001 12:22:54.128 - TCP connection dropped - Source:mail.domain-i-edited.com, 45612, WAN - Destination:my.mail.server, 113, LAN - 'Authentication' - Rule 32 12/04/2001 12:22:54.736 - TCP connection dropped - Source:nat24.domain-i-edited.com, 3323, WAN - Destination:my.mail.server, 113, LAN - 'Authentication' - Rule 32 and then it seemed to break up into 15 minute increments.... we'll continue a few hours later to save space.. 12/04/2001 20:32:41.880 - TCP connection dropped - Source:mail.domain-i-edited.com, 41648, WAN - Destination:my.mail.server, 113, LAN - 'Authentication' - Rule 32 12/04/2001 20:47:53.128 - TCP connection dropped - Source:mail.domain-i-edited.com, 46169, WAN - Destination:my.mail.server, 113, LAN - 'Authentication' - Rule 32 so on and so forth... every fifteen minutes... 12/05/2001 07:24:42.752 - TCP connection dropped - Source:mail.domain-i-edited.com, 39828, WAN - Destination:my.mail.server, 113, LAN - 'Authentication' - Rule 32 12/05/2001 07:24:43.080 - TCP connection dropped - Source:nat24.domain-i-edited.com, 3865, WAN - Destination:my.mail.server, 113, LAN - 'Authentication' - Rule 32 12/05/2001 07:40:09.544 - TCP connection dropped - Source:mail.domain-i-edited.com, 42777, WAN - Destination:my.mail.server, 113, LAN - 'Authentication' - Rule 32 12/05/2001 07:55:31.320 - TCP connection dropped - Source:mail.domain-i-edited.com, 45697, WAN - Destination:my.mail.server, 113, LAN - 'Authentication' - Rule 32 12/05/2001 08:10:52.560 - TCP connection dropped - Source:mail.domain-i-edited.com, 48479, WAN - Destination:my.mail.server, 113, LAN - 'Authentication' - Rule 32 12/05/2001 08:10:52.848 - TCP connection dropped - Source:nat24.domain-i-edited.com, 4570, WAN - Destination:my.mail.server, 113, LAN - 'Authentication' - Rule 32 12/05/2001 08:25:53.160 - TCP connection dropped - Source:mail.domain-i-edited.com, 51350, WAN - Destination:my.mail.server, 113, LAN - 'Authentication' - Rule 32 12/05/2001 08:41:15.896 - TCP connection dropped - Source:mail.domain-i-edited.com, 54279, WAN - Destination:my.mail.server, 113, LAN - 'Authentication' - Rule 32 12/05/2001 08:41:16.288 - TCP connection dropped - Source:nat24.domain-i-edited.com, 4925, WAN - Destination:my.mail.server, 113, LAN - 'Authentication' - Rule 32 12/05/2001 08:56:21.000 - TCP connection dropped - Source:mail.domain-i-edited.com, 57035, WAN - Destination:my.mail.server, 113, LAN - 'Authentication' - Rule 32 12/05/2001 08:56:21.272 - TCP connection dropped - Source:nat24.domain-i-edited.com, 1138, WAN - Destination:my.mail.server, 113, LAN - 'Authentication' - Rule 32 12/05/2001 09:11:26.288 - TCP connection dropped - Source:mail.domain-i-edited.com, 59912, WAN - Destination:my.mail.server, 113, LAN - 'Authentication' - Rule 32 12/05/2001 09:11:26.576 - TCP connection dropped - Source:nat24.domain-i-edited.com, 1351, WAN - Destination:my.mail.server, 113, LAN - 'Authentication' - Rule 32 12/05/2001 09:26:27.944 - TCP connection dropped - Source:mail.domain-i-edited.com, 34476, WAN - Destination:my.mail.server, 113, LAN - 'Authentication' - Rule 32 12/05/2001 09:26:28.256 - TCP connection dropped - Source:nat24.domain-i-edited.com, 1527, WAN - Destination:my.mail.server, 113, LAN - 'Authentication' - Rule 32 12/05/2001 09:41:30.400 - TCP connection dropped - Source:mail.domain-i-edited.com, 37415, WAN - Destination:my.mail.server, 113, LAN - 'Authentication' - Rule 32 12/05/2001 09:41:30.768 - TCP connection dropped - Source:nat24.domain-i-edited.com, 1775, WAN - Destination:my.mail.server, 113, LAN - 'Authentication' - Rule 32 continuing as I send this.... Thanks, Michael Ward ---------------------------------------------------------------------------- This list is provided by the SecurityFocus ARIS analyzer service. For more information on this free incident handling, management and tracking system please see: http://aris.securityfocus.com
Current thread:
- Port 113 requests? Michael Ward (Dec 06)
- Re: Port 113 requests? Chris Wilkes (Dec 06)
- Re: Port 113 requests? Ryan Russell (Dec 06)
- Re: Port 113 requests? Helmut Springer (Dec 07)
- Re: Port 113 requests? Valdis . Kletnieks (Dec 07)
- Re: Port 113 requests? Ryan Russell (Dec 07)
- <Possible follow-ups>
- RE: Port 113 requests? Slighter, Tim (Dec 06)
- RE: Port 113 requests? Ryan McDonnell (Dec 07)
- RE: Port 113 requests? Andrew Leonard (Dec 07)
- RE: Port 113 requests? Todd Suiter (Dec 07)
- Re: Port 113 requests? Helmut Springer (Dec 07)
(Thread continues...)