NAME

       cutter - cut tcp/ip connections

SYNOPSIS

       cutter ipaddress1 [ port1 [ ipaddress2 [ port2  ]  ]  ]

DESCRIPTION

       Cutter is an open source program that allows Linux firewall administrators to abort TCP/IP
       connections routed over the firewall or router on which it is run.

WARNING

       Cutter has been designed for use as a administrators tool for Linux  firewalls.  It's  use
       (as  is,  or  modified) for any other purpose is not sanctioned by the author. So - do not
       use this tool as a parachute, or to dry your cat, chill meat, answer your phone, drive you
       car, teach your kids to read or attack other people's computer systems or networks.

       This  software  has  been  designed  for  legal  and  appropriate  use by network security
       administrators and the like. It has been written  as  part  of  a  larger  Linux  firewall
       project, targetting at controlling traffic from peer-to-peer software such as Kazaa, iMesh
       and others into and out of a private network. It is not designed as a tool  for  malicious
       use and the author in no way sanctions such use.

       Users  of  the  software  should  be aware that it's actions are easily detectable using a
       number of readily available network monitoring tools, and it makes no attempt to  disguise
       it's  actions.  Malicious  use  of "cutter" could result in a jail sentance in a number of
       countries around the world.

       The author is not responsible for the results of using this software. It is  provided  "as
       is" in the hope that it will be useful, but no garantees are made about it's use.

USAGE

       Cutter can be called using one of the following four syntaxes.

       cutter ip-address

       Example:
              cutter 10.10.0.45

              Cuts  all  connections  passing  through  the  firewall  between  any  ports on the
              specified ip-address (either a "private" or "public" address) and any other  hosts.
              This can be used to close down all incoming connections to a particular server, all
              outgoing connections from a particular client or  all  outgoing  connections  to  a
              server.

       cutter ip-address port

       Example:
              cutter 200.1.2.3 80

              Cuts all connections to or from the specified ip-address/port pair. This allows the
              user to be a little more specific than the previous example and  allows  targetting
              of specific services on specific hosts.

       cutter ip-address-1 port-1 ip-address-2

       Example:
              cutter 200.1.2.3 22 10.10.0.45

              Cuts  all connections between ip-address-2 and ip-address-1/port-1. This allows the
              user to cut connections between a specified "client" and a particular service on  a
              specified  host.  Our  example  closes  host  10.10.0.45's SSH connection to server
              200.1.2.3.

       cutter ip-address-1 port-1 ip-address-2 port-2

       Example:
              cutter 200.1.2.3 22 10.10.0.45 32451

              Cuts the specific connection between the two ip/port number pairs given.

STATUS

       Cutter 1.03 should be considered EXPERIMENTAL.  The author is releasing a tool that  works
       on  the systems he has access to (namely: IPCop and RedHat Linux), and he is seeking input
       on it's use on other systems, ideas for improvement, offers of sponsorship - etc.

ADDITIONAL DOCUMENTATION

       This program is documented at http://www.lowth.com/cutter/ ⟨http://www.lowth.com/cutter/⟩

AUTHOR

       Blars Blarson addapted the README and web page written by Chris Lowth into this  man  page
       for  debian  package  of cutter.  This man page may be distribuated under the terms of the
       Gnu GPL version 2.

                                           April, 2005                                  CUTTER(8)