tcpdrop(8) for DragonFly

Andre Nathan andre at
Sat Nov 13 14:10:34 PST 2004


tcpdrop is an utility that shipped with OpenBSD 3.6. As the name
indicates, it can be used to drop a TCP connection from the command line,
which can be useful during denial of service attacks, or if some
connection is causing congestion on a link.

The patch at

adds the "net.inet.tcp.drop" and "net.inet6.tcp6.drop" sysctls. I don't
have how to test the inet6 one, so I just based it on the other existing
sysctls. The inet4 one worked fine.

The code for the tcpdrop utility is at

These are the corresponding commit messages on OpenBSD:

Best regards,

More information about the Submit mailing list