Security Incidents mailing list archives
Mail Server attack
From: joel () DIGGY COM AU (Joel Michael)
Date: Wed, 8 Mar 2000 08:14:37 +1100
hi all (this is my first post, so please turn down the flame level a bit ;) We had an attack on our mail server. It seems as though someone sent literally tens of thousands of emails at our server with random (as in, random character generator) to: addresses. This actually managed to crash our server with the overhead of looking up all those thousands of non-existant addresses. Has anyone else seen something like this (maybe with a little less disasterous side-affects)? As a stop-gap measure, we have blacklisted the IP address that the attack came from (a cable modem user on the RoadRunner network in Houston, Texas, USA). Anyone got any ideas about how to permanently stop this kind of attack? Any thoughts, comments, etc appreciated :) --- Joel Michael System Administrator Diggy Internet Services 90 Petrie Terrace Brisbane Qld 4000 Australia Ph: +61 7 3367 3555 Fax: +61 7 3367 3544 Mob: 0401 039 462
Current thread:
- Re: Cracked; rootkit - entrapment question?, (continued)
- Re: Cracked; rootkit - entrapment question? Simple Nomad (Mar 02)
- Re: Cracked; rootkit - entrapment question? Dave Dittrich (Mar 02)
- Re: Cracked; rootkit - entrapment question? Jon Lewis (Mar 02)
- Re: Cracked; rootkit - entrapment question? rain forest puppy (Mar 02)
- Re: Cracked; rootkit - entrapment question? Jordan Ritter (Mar 03)
- Re: Cracked; rootkit - entrapment question? CL: Nelson, Jeff (Mar 02)
- Re: Cracked; rootkit - entrapment question? Jon Lewis (Mar 02)
- Re: Cracked; rootkit - entrapment question? Craig H. Rowland (Mar 02)
- Re: Cracked; rootkit - entrapment question? Granquist, Lamont (Mar 03)
- Re: Cracked; rootkit - entrapment question? 1Lt Rob Lee (Mar 07)
- Mail Server attack Joel Michael (Mar 07)
- Re: Mail Server attack Omachonu Ogali (Mar 08)
- Re: Mail Server attack Joel Michael (Mar 08)
- Re: Cracked; rootkit - entrapment question? Craig H. Rowland (Mar 09)
- Re: Cracked; rootkit - entrapment question? Seth Georgion (Mar 11)
- Re: Cracked; rootkit - entrapment question? Filip M. Gieszczykiewicz (Mar 03)