Connlogd is a detailed TCP/UDP connection logger with the ability to filter what information is logged. It can log to syslog or stderr so that it can be used with other logging packages such as D.J. Bernstein's multilog program. In addition to address and port information, it logs all TCP header flags (SYN, FIN, etc... as well as bogus flags) and the TCP window size. It uses the pcap library for packet capture and runs on most systems that support the pcap library. NOTE: Included in the source distribution is a script to help convert the logs into the format used when reporting attacks to dshield.org.
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