linux-kernel - Re: SO_REUSEADDR not allowing server and client to use same port

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Message-ID: <20080228201926.558c4e7c@core>
Date:	Thu, 28 Feb 2008 20:19:26 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Nebojsa Miljanovic <neb@...atel-lucent.com>
Cc:	linux-kernel@...r.kernel.org,
	"Kittlitz, Edward (Ned)" <nkittlitz@...atel-lucent.com>,
	asweeney@...atel-lucent.com,
	"Polhemus, William (Bart)" <bpolhemus@...atel-lucent.com>
Subject: Re: SO_REUSEADDR not allowing server and client to use same port

> Currently, Linux does not allow reuse of same local port for both TCP server and
> TCP client. I understand that there may be a need to prevent two servers from

Think about what happens for simultaneous connect (that obscure little
corner of the tcp/ip spec). Now think about what it means for security.

ALan
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