http://www.cert.org/current/current_activity.html#icmpincrease Regards, Greg DeGennaro Jr., CCNP Security Analyst -----Original Message----- From: Charles Blackburn [mailto:charlesb@summerfield-technology.co.uk] Sent: Monday, August 18, 2003 3:25 AM To: incidentsat_private Subject: is this the start of something naughty? Hi I received approximately 100 of these within the space of 30 minutes or so from numerous different IP addresses and on my /29 block (2/3 machines and also the broadcast/and network addresses). Now I've had a few shall we say erm, "funnies" going on on this one machine lately with problems when it's rebooted which seem to be fixed by a kernel rebuild, but that could be a hardware problem. however it could be more indicative of an attack maybe even a successful one. Aug 18 10:46:14 thunder snort: [1:483:2] ICMP PING CyberKit 2.2 Windows [Classification: Misc activity] [Priority: 3]: {ICMP} 80.253.133.136 -> xx.xx.xx.120/123/125/127 120/127 are the end of my 8 IP block, 125 is the machine with the funnies, and 123 is a windows 98 vmware session that I've only just finished installing windows in. it's always those same IP's and never any of the others. my question is, what can i do to see whether my box has been compromised (a rebuild's not much a problem as i was going to do it anyway :P) and if could any of you "1337" (i use that term loosely) help me. regards charles --------------------------------------------------------------------------- Captus Networks - Integrated Intrusion Prevention and Traffic Shaping - Instantly Stop DoS/DDoS Attacks, Worms & Port Scans - Automatically Control P2P, IM and Spam Traffic - Ensure Reliable Performance of Mission Critical Applications - Precisely Define and Implement Network Security and Performance Policies **FREE Vulnerability Assessment Toolkit - WhitePapers - Live Demo Visit us at: http://www.securityfocus.com/sponsor/CaptusNetworks_incidents_030814 ---------------------------------------------------------------------------- --------------------------------------------------------------------------- Captus Networks - Integrated Intrusion Prevention and Traffic Shaping - Instantly Stop DoS/DDoS Attacks, Worms & Port Scans - Automatically Control P2P, IM and Spam Traffic - Ensure Reliable Performance of Mission Critical Applications - Precisely Define and Implement Network Security and Performance Policies **FREE Vulnerability Assessment Toolkit - WhitePapers - Live Demo Visit us at: http://www.securityfocus.com/sponsor/CaptusNetworks_incidents_030814 ----------------------------------------------------------------------------
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