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-.\" $OpenBSD: tcpdrop.8,v 1.5 2004/05/24 13:57:31 jmc Exp $
-.\"
-.\" Copyright (c) 2009 Juli Mallett <jmallett@FreeBSD.org>
-.\" Copyright (c) 2004 Markus Friedl <markus@openbsd.org>
-.\"
-.\" Permission to use, copy, modify, and distribute this software for any
-.\" purpose with or without fee is hereby granted, provided that the above
-.\" copyright notice and this permission notice appear in all copies.
-.\"
-.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-.\"
-.\" $FreeBSD$
-.\"
-.Dd March 24, 2009
-.Dt TCPDROP 8
-.Os
-.Sh NAME
-.Nm tcpdrop
-.Nd drop TCP connections
-.Sh SYNOPSIS
-.Nm tcpdrop
-.Ar local-address
-.Ar local-port
-.Ar foreign-address
-.Ar foreign-port
-.Nm tcpdrop
-.Op Fl l
-.Fl a
-.Sh DESCRIPTION
-The
-.Nm
-command may be used to drop TCP connections from the command line.
-.Pp
-If
-.Fl a
-is specified then
-.Nm
-will attempt to drop all active connections.
-The
-.Fl l
-flag may be given to list the tcpdrop invocation to drop all active
-connections one at a time.
-.Pp
-If
-.Fl a
-is not specified then only the connection between the given local
-address
-.Ar local-address ,
-port
-.Ar local-port ,
-and the foreign address
-.Ar foreign-address ,
-port
-.Ar foreign-port ,
-will be dropped.
-.Pp
-Addresses and ports may be specified by name or numeric value.
-Both IPv4 and IPv6 address formats are supported.
-.Nm
-in case of success or failure.
-.Sh EXIT STATUS
-.Ex -std
-.Sh EXAMPLES
-If a connection to
-.Xr httpd 8
-is causing congestion on a network link, one can drop the TCP session
-in charge:
-.Bd -literal -offset indent
-# sockstat -c | grep httpd
-www httpd 16525 3 tcp4 \e
- 192.168.5.41:80 192.168.5.1:26747
-.Ed
-.Pp
-The following command will drop the connection:
-.Bd -literal -offset indent
-# tcpdrop 192.168.5.41 80 192.168.5.1 26747
-.Ed
-.Pp
-The following command will drop all connections but those to or from
-port 22, the port used by
-.Xr sshd 8 :
-.Bd -literal -offset indent
-# tcpdrop -l -a | grep -vw 22 | sh
-.Ed
-.Sh SEE ALSO
-.Xr netstat 1 ,
-.Xr sockstat 1
-.Sh AUTHORS
-.An Markus Friedl Aq markus@openbsd.org
-.An Juli Mallett Aq jmallett@FreeBSD.org
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