From: "Mikael Ståldal" <mikael.staldal@univits.com>
To: linux-kernel@vger.kernel.org
Subject: Re: Possibility to adjust the only-root-can-bind-to-port-under-1024 limit
Date: Mon, 26 Nov 2007 10:52:26 +0100 [thread overview]
Message-ID: <474A975A.8020302@univits.com> (raw)
In-Reply-To: <20071120155303.76f234ec@astralstorm.puszkin.org>
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
next prev parent reply other threads:[~2007-11-26 10:15 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-20 10:14 Possibility to adjust the only-root-can-bind-to-port-under-1024 limit Mikael Ståldal
2007-11-20 14:53 ` Radoslaw Szkodzinski
[not found] ` <474306BF.4010207@univits.com>
2007-11-20 19:23 ` Radoslaw Szkodzinski
2007-11-26 9:52 ` Mikael Ståldal [this message]
2007-11-27 22:42 ` Phillip Susi
2007-11-30 9:15 ` Mikael Ståldal
[not found] <554627.38779.qm@web36601.mail.mud.yahoo.com>
2007-12-06 12:32 ` Mikael Ståldal
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