CUTTER and TCPKILL command in Linux

Linux Cutting the tcp/ip network connection with cutter command

Cut all connections from to server
# cutter

Cut all ssh connection from to server
# cutter 22

Cut all ssh connection from to ssh server
# cutter 22

How to kill a TCP connection?

Use tcpkill command to kill specified in-progress TCP connections. It is useful for libnids-based applications which require a full TCP 3-whs for TCB creation.

tcpkill -i eth0 { expression }


(a) Kill all outgoing ftp (port 21) connection:

tcpkill -i eth0 port 21

(b) Kill all all packets arriving at or departing from host (

tcpkill host

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