lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Tue, 10 Nov 2009 17:53:43 +0000
From:	Ben Hutchings <bhutchings@...arflare.com>
To:	Chris Friesen <cfriesen@...tel.com>
Cc:	netdev@...r.kernel.org, Linux kernel <linux-kernel@...r.kernel.org>
Subject: Re: sunrpc port allocation and IANA reserved list

On Tue, 2009-11-10 at 11:43 -0600, Chris Friesen wrote:
> By default sunrpc ports are allocated at random in the range 665-1023U.
>  However, there are many ports within this range which have been
> reserved by the IANA (and others like port 921 which are not formally
> reserved but are "well-known").
> 
> Given that a userspace application can be stopped and restarted at any
> time, and a sunrpc registration can happen at any time, what is the
> expected mechanism to prevent the kernel from allocating a port for use
> by sunrpc that reserved or well-known?
> 
> Apparently Redhat and Debian have distro-specific ways of dealing with
> this, but is there a standard solution?  Should there be?
> 
> The current setup seems suboptimal.

I believe both RH and Debian are using the same implementation:
<http://cyberelk.net/tim/software/portreserve/>.

Ben.

-- 
Ben Hutchings, Senior Software Engineer, Solarflare Communications
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists