Date: Mon, 15 Nov 1999 06:38:13 -0500 From: "Francisco Reyes" <fran@reyes.somos.net> To: "freebsd-security@FreeBSD.ORG" <freebsd-security@FreeBSD.ORG> Cc: "Brian Somers" <brian@Awfulhak.org> Subject: Is this an attack? ICMP packets coming from my own IP Message-ID: <199911151140.GAA50607@sanson.reyes.somos.net>
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Some days back I ran a news server, Leafnode++, for 2 days. The server got Hijacked because I failed to secure it. Ever since I have been paying close attention to my logs. I have ICMP packets enabled, but I log them. Last night I noticed numerous ICMP packets, but the ones that worried me the most were some coming from an IP which is the IP I use on that box: 207.240.212.43 Is this some form of attack? ipfw: 3100 Accept ICMP:8.0 207.240.212.43 207.240.212.43 out via tun0 ipfw: 3100 Accept ICMP:8.0 207.240.212.43 207.240.212.43 in via tun0 ipfw: 3100 Accept ICMP:0.0 207.240.212.43 207.240.212.43 out via tun0 ipfw: 3100 Accept ICMP:0.0 207.240.212.43 207.240.212.43 in via tun0 ipfw: 3100 Accept ICMP:8.0 207.240.212.43 207.240.212.43 out via tun0 ipfw: 3100 Accept ICMP:8.0 207.240.212.43 207.240.212.43 in via tun0 How can they forge my own IP? Should I mention this to my ISP? To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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