tcplog , a TCP packet logger, is a part of the
jail (just another ip logger) package.
tcplog is a small (daemon) process which logs all TCP connection requests
to the local host. The syslog level at which a given packet is logged is
configurable depending on the destination port. Packets from specific hosts
can be ignored, and a default log level can be specified.
tcplog can be useful in detecting attempted denials of service, and
monitoring network traffic, especially when used in conjunction with
icmplog(8) .
The configuration is explained in the
tcplog.conf(5) manual page.
OPTIONS
"-f,
Use
filename as the configuration file instead of the default
(/etc/tcplog.conf).
