TCPDROP(8) FreeBSD System Manager's Manual TCPDROP(8)
NAME
tcpdrop - drop a TCP connection
SYNOPSIS
tcpdrop local-addr local-port remote-addr remote-port
DESCRIPTION
The tcpdrop command drops the TCP connection specified by the local
address local-addr, port local-port and the foreign address remote-addr,
port remote-port. Addresses and ports can be specified by name or
numeric value.
To simplify dropping TCP connections using the output of fstat(1) and
netstat(1), tcpdrop also supports a two-argument form where the address
and port are separated by a colon (`:') or dot (`.') character.
EXAMPLES
If a connection to httpd(8) is causing congestion on a network link, one
can drop the TCP session in charge:
$ fstat | grep 'httpd.*internet.*<--'
www httpd 21307 3* internet stream tcp \
0xd1007ca8 192.168.5.41:80 <-- 192.168.5.1:26747
Either of the following commands will drop the connection:
# tcpdrop 192.168.5.41 80 192.168.5.1 26747
# tcpdrop 192.168.5.41:80 192.168.5.1:26747
# tcpdrop 192.168.5.41.80 192.168.5.1.26747
SEE ALSO
fstat(1), netstat(1)
HISTORY
The tcpdrop program first appeared in OpenBSD 3.6.
AUTHORS
The tcpdrop program was written by Markus Friedl <
[email protected]>.
FreeBSD 14.1-RELEASE-p8 February 6, 2023 FreeBSD 14.1-RELEASE-p8