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Re: closing an existing connexion
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Re: closing an existing connexion


  • Subject: Re: closing an existing connexion
  • From: Dalton Hamilton <email@hidden>
  • Date: Fri, 7 Jan 2005 18:00:29 +0100

Just and idea:
I would definitely think this is possible if you sent the application a TCP packet with the FIN bit set. You could even spoof the src address being that you wouldn't require a response. In the application that kill's the virtual-circuit connection, you have to build your own tcp frame since you obviously wouldn't have a connected socket to close or shutdown. Building a TCP frame shouldn't be too hard if you capture with with a packet analyzer. I use to do it to build my own Layer-2 multicast packets.


Good luck.
Dalton Hamilton
if(1)osx


On Jan 7, 2005, at 1:35 PM, Vincent Pottier wrote:

Hi,
Can't you use IPFW to do the work (from the terminal) or ipfirewall (from an application)?
hope that help.
Vincent


Le 7 janv. 05, à 11:04, Nicolas Berloquin a écrit :
Hello !

I'm wondering whether it is possible to 'kill' an existing TCP connexion from outside
the process that owns it, a bit like it was possible with some tools on OS9 ?
Would this be possible 1) from a program ? 2) from the terminal 3) from a divert socket ?


thanks !

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References: 
 >closing an existing connexion (From: Nicolas Berloquin <email@hidden>)
 >Re: closing an existing connexion (From: Vincent Pottier <email@hidden>)

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