Message-ID: <474A975A.8020302@univits.com>
Date: Mon, 26 Nov 2007 10:52:26 +0100
From: =?UTF-8?B?TWlrYWVsIFN0w6VsZGFs?= <mikael.staldal@univits.com>
Organization: Univits
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To: linux-kernel@vger.kernel.org
Subject: Re: Possibility to adjust the only-root-can-bind-to-port-under-1024
   limit
References: <4742B3A3.2050103@univits.com> <20071120155303.76f234ec@astralstorm.puszkin.org>
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Radoslaw Szkodzinski (AstralStorm) skrev:
>> In Linux you have to be root in order to listen to TCP or UDP ports below 1024 (the 
>> well-known ports). As far as I know, this limit is hardcoded in the kernel.
>
> The proper way to enable port <= 1024 binding support is adding CAP_NET_BIND_SERVICE to 
 > the process capability set, e.g. by using file-system capabilities.

And how do you protect ports >1024 from any user binding to them?

Isn't the 1024 limit somewhat obsolete and arbitrary today?

/Mikael

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