Date: Fri, 17 Aug 2001 08:15:02 -0500 From: Eric_Stanfield@kenokozie.com To: FreeBSD-ISP@FreeBSD.ORG Subject: Re: Killing TCP/IP connection. Message-ID: <OFCB9C33C2.F26B6BDD-ON86256AAB.0048B5D0@kka.com>
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Wasn't there an app called tcpkill in the ports? I just looked and didn't
see it but I could have sworn it was there in the past and was supposed to
be able to nuke individual tcp sessions.
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Eric Stanfield, K2Access
Keno Kozie Associates
222 N LaSalle #1500
Chicago, IL 60606
(312) 332-3000
Fernando Gleiser
<fgleiser@cactus.fi To: <FreeBSD-Questions@FreeBSD.ORG>
.uba.ar> cc: <FreeBSD-ISP@FreeBSD.ORG>
Sent by: Subject: Re: Killing TCP/IP connection.
owner-freebsd-isp@F
reeBSD.ORG
08/17/01 08:36 AM
On Fri, 17 Aug 2001 sthaug@nethelp.no wrote:
> That's fine for the one process per client case. But I'm talking about
> the general case where *one* process handles the connections to many
> clients, and you specifically *don't* have a separate process per client.
> In such cases it would be very useful to have a command line facility
> to kill *one* connection without interfering with the other connections
> handled by the same process.
If you are using TCP and the clients are on a remote machine, there is
no standard way to shutdown a connection from an external process. You
would need to sniff the net to know the sequence numbers involved and
then send a RST.
What you can do is modify the server to use some kind of IPC in which you
tell
it "I want to shutdown the socket connectod from ip,port to ip,port" and
the server then shutown(2)s the socket.
Fer
>
> Steinar Haug, Nethelp consulting, sthaug@nethelp.no
>
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