iplog is a TCP/IP traffic logger capable of logging TCP, UDP and ICMP traffic. Features a DNS cache, the ability to detect port scans, null scans, and FIN scans, "smurf" attacks, bogus TCP flags used in OS detection, Xmas scans, ICMP ping floods, UDP scans, and IP fragment attacks. It currently runs on Linux, FreeBSD, OpenBSD, BSDI and Solaris.
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