Comments on: Linux Cutting the tcp/ip network connection with cutter command http://www.cyberciti.biz/tips/cutting-the-tcpip-network-connection-with-cutter.html This is a Linux sys admin journal by Vivek about sys admin work, Linux tips & tricks, hacks, news and more. Fri, 10 Feb 2012 20:37:43 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: vliphttp://www.cyberciti.biz/tips/cutting-the-tcpip-network-connection-with-cutter.html#comment-161814 vlip Tue, 07 Dec 2010 22:20:43 +0000 http://www.cyberciti.biz/tips/cutting-the-tcpip-network-connection-with-cutter.html#comment-161814 PC ~]$ tcpkill -h Version: 2.4 Usage: tcpkill [-i interface] [-1..9] expression PC ~]$ tcpkill -h
Version: 2.4
Usage: tcpkill [-i interface] [-1..9] expression

]]> By: Ulverhttp://www.cyberciti.biz/tips/cutting-the-tcpip-network-connection-with-cutter.html#comment-148560 Ulver Thu, 14 May 2009 17:01:05 +0000 http://www.cyberciti.biz/tips/cutting-the-tcpip-network-connection-with-cutter.html#comment-148560 some has view this behaviour? cutter some.internet.ip some.service.port some.lan.ip some.user.port No matching connections found i'm googling about that but only i find that is a reported bug...in some distros ( polling over google searches ) any advice/clue will be usefull some has view this behaviour?

cutter some.internet.ip some.service.port some.lan.ip some.user.port
No matching connections found

i’m googling about that but only i find that is a reported bug…in some distros
( polling over google searches )

any advice/clue will be usefull

]]> By: marekhttp://www.cyberciti.biz/tips/cutting-the-tcpip-network-connection-with-cutter.html#comment-124557 marek Thu, 26 Apr 2007 14:40:39 +0000 http://www.cyberciti.biz/tips/cutting-the-tcpip-network-connection-with-cutter.html#comment-124557 ># sameer Says: >October 3rd, 2006 at 9:43 pm > >well on non-routers you can use netstat to kill a tcp connection > ># netstat -p | grep >192.168.1.x > ># kill -9 pid > >done. Well what if I don't want to kil the process, but only the connection? kill -9 PID is a bit excessive, IMHO. ># sameer Says:
>October 3rd, 2006 at 9:43 pm
>
>well on non-routers you can use netstat to kill a tcp connection
>
># netstat -p | grep
>192.168.1.x
>
># kill -9 pid
>
>done.

Well what if I don’t want to kil the process, but only the connection? kill -9 PID is a bit excessive, IMHO.

]]> By: mohamedhttp://www.cyberciti.biz/tips/cutting-the-tcpip-network-connection-with-cutter.html#comment-112184 mohamed Wed, 11 Apr 2007 22:20:53 +0000 http://www.cyberciti.biz/tips/cutting-the-tcpip-network-connection-with-cutter.html#comment-112184 nice work nice work

]]> By: sameerhttp://www.cyberciti.biz/tips/cutting-the-tcpip-network-connection-with-cutter.html#comment-19370 sameer Tue, 03 Oct 2006 21:43:00 +0000 http://www.cyberciti.biz/tips/cutting-the-tcpip-network-connection-with-cutter.html#comment-19370 well on non-routers you can use netstat to kill a tcp connection # netstat -p | grep 192.168.1.x # kill -9 pid done. well on non-routers you can use netstat to kill a tcp connection

# netstat -p | grep
192.168.1.x

# kill -9 pid

done.

]]> By: Anonymoushttp://www.cyberciti.biz/tips/cutting-the-tcpip-network-connection-with-cutter.html#comment-19369 Anonymous Tue, 13 Dec 2005 21:02:00 +0000 http://www.cyberciti.biz/tips/cutting-the-tcpip-network-connection-with-cutter.html#comment-19369 Well Anonymous user it is diffrent than iptables as some one pointed out on digg: <B>iptables is only active on future connections, not current ones. you could institute a snort-inline setup which if you added rules to then it would drop current connections that matched your rules.</B> Also this utility is in gentoo portage. Source: diecastbeatdown @ digg.com Well Anonymous user it is diffrent than iptables as some one pointed out on digg:

iptables is only active on future connections, not current ones. you could institute a snort-inline setup which if you added rules to then it would drop current connections that matched your rules.

Also this utility is in gentoo portage. Source: diecastbeatdown @ digg.com

]]> By: LinuxTitlihttp://www.cyberciti.biz/tips/cutting-the-tcpip-network-connection-with-cutter.html#comment-19368 LinuxTitli Tue, 13 Dec 2005 11:03:00 +0000 http://www.cyberciti.biz/tips/cutting-the-tcpip-network-connection-with-cutter.html#comment-19368 <I>>Anonymous said... >Okay, so how is this different from making a change to the iptables config files or from executing an iptables command on the command line? </I> Making changes to firewall script is another solution only if you wanna block your user permanently; it is all about cutting connections what will you do suppose workstation 192.168.1.5-10 left unused ssh tunnels or vpn connection Friday night and they will only back on monday? Solution is simple cut it that connection as I cannot shutdown workstation (they may login from home) ...this will also save memory load on Linux route (you can see the difference using following command on router itself) <B>cat /proc/slabinfo</B> >Anonymous said…
>Okay, so how is this different from making a change to the iptables config files or from executing an iptables command on the command line?
Making changes to firewall script is another solution only if you wanna block your user permanently; it is all about cutting connections what will you do suppose workstation 192.168.1.5-10 left unused ssh tunnels or vpn connection Friday night and they will only back on monday? Solution is simple cut it that connection as I cannot shutdown workstation (they may login from home) …this will also save memory load on Linux route (you can see the difference using following command on router itself)
cat /proc/slabinfo

]]> By: LinuxTitlihttp://www.cyberciti.biz/tips/cutting-the-tcpip-network-connection-with-cutter.html#comment-19367 LinuxTitli Tue, 13 Dec 2005 10:54:00 +0000 http://www.cyberciti.biz/tips/cutting-the-tcpip-network-connection-with-cutter.html#comment-19367 Mina Naguib, thanks for pointing out tcpkill tool. I appreciate your post Mina Naguib, thanks for pointing out tcpkill tool. I appreciate your post

]]> By: Sundarhttp://www.cyberciti.biz/tips/cutting-the-tcpip-network-connection-with-cutter.html#comment-19366 Sundar Tue, 13 Dec 2005 09:44:00 +0000 http://www.cyberciti.biz/tips/cutting-the-tcpip-network-connection-with-cutter.html#comment-19366 Really good stuff, pal. Really good stuff, pal.

]]> By: Mina Naguibhttp://www.cyberciti.biz/tips/cutting-the-tcpip-network-connection-with-cutter.html#comment-19365 Mina Naguib Tue, 13 Dec 2005 08:50:00 +0000 http://www.cyberciti.biz/tips/cutting-the-tcpip-network-connection-with-cutter.html#comment-19365 `tcpkill`, part of Dug Song's "dsniff" package, does the same thing plus a bit more `tcpkill`, part of Dug Song’s “dsniff” package, does the same thing plus a bit more

]]> By: Anonymoushttp://www.cyberciti.biz/tips/cutting-the-tcpip-network-connection-with-cutter.html#comment-19364 Anonymous Tue, 13 Dec 2005 07:16:00 +0000 http://www.cyberciti.biz/tips/cutting-the-tcpip-network-connection-with-cutter.html#comment-19364 Okay, so how is this different from making a change to the iptables config files or from executing an iptables command on the command line? Okay, so how is this different from making a change to the iptables config files or from executing an iptables command on the command line?

]]> By: kdefanboyhttp://www.cyberciti.biz/tips/cutting-the-tcpip-network-connection-with-cutter.html#comment-19363 kdefanboy Tue, 13 Dec 2005 03:47:00 +0000 http://www.cyberciti.biz/tips/cutting-the-tcpip-network-connection-with-cutter.html#comment-19363 Very cool, now where is my router box? Very cool, now where is my router box?

]]> By: Anonymoushttp://www.cyberciti.biz/tips/cutting-the-tcpip-network-connection-with-cutter.html#comment-19362 Anonymous Tue, 13 Dec 2005 03:45:00 +0000 http://www.cyberciti.biz/tips/cutting-the-tcpip-network-connection-with-cutter.html#comment-19362 Very useful but not for everybody, untile and unless your are net admin ;) Very useful but not for everybody, untile and unless your are net admin ;)

]]> By: Bryan Jr.http://www.cyberciti.biz/tips/cutting-the-tcpip-network-connection-with-cutter.html#comment-19361 Bryan Jr. Tue, 13 Dec 2005 00:37:00 +0000 http://www.cyberciti.biz/tips/cutting-the-tcpip-network-connection-with-cutter.html#comment-19361 I saw your post at adminpointing.net, never know such command exist ever. I'm looking to kill kazza traffic with this ;) Bryan Jr. I saw your post at adminpointing.net, never know such command exist ever. I’m looking to kill kazza traffic with this ;)

Bryan Jr.

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