[Spread-users] INET unable to bind to port - force kill?

George Schlossnagle george at omniti.com
Thu Jul 26 18:49:53 EDT 2001


Have you considered having spread use REUSEADDR as a compile-time option, or
if a priviledged port is specified?

----- Original Message -----
From: "Jonathan Stanton" <jonathan at cnds.jhu.edu>
To: "Jesus Cea Avion" <jcea at argo.es>
Cc: <spread-users at lists.spread.org>
Sent: Thursday, July 26, 2001 6:44 PM
Subject: Re: [Spread-users] INET unable to bind to port - force kill?


> We did use that for awhile and it helps wwith the problem, however it has
> some bad security consequences (someone else on the machine can also bind
> to the port and steal the traffic meant for Spread.) so it was removed in
a
> security audit last winter.
>
> Jonathan
>
> p.s. some daemons can use reuseaddr because they use a priveledged port (<
> 1024) so must run with root priviledges. Spread uses a high port and so
any
> user can bind to it.
>
>
>
>  On Fri, Jul 27, 2001 at 12:41:09AM +0200, Jesus Cea Avion wrote:
> > > This is an annoying problem that as far I know has no real solution
> > > because it is a result of the way TCP works.
> >
> > What about the "REUSEADDR" flag for sockets?.
> >
> > --
> > Jesus Cea Avion                         _/_/      _/_/_/        _/_/_/
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> >
> >
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>
> --
> -------------------------------------------------------
> Jonathan R. Stanton         jonathan at cs.jhu.edu
> Dept. of Computer Science
> Johns Hopkins University
> -------------------------------------------------------
>
>
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