Message-ID: <489DA3F9.1080703@opengridcomputing.com>
Date: Sat, 09 Aug 2008 09:04:41 -0500
From: Steve Wise <swise@opengridcomputing.com>
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To: David Miller <davem@davemloft.net>
CC: jgarzik@pobox.com, divy@chelsio.com, rdreier@cisco.com, kxie@chelsio.com,
       netdev@vger.kernel.org, open-iscsi@googlegroups.com,
       michaelc@cs.wisc.edu, daisyc@us.ibm.com, wenxiong@us.ibm.com,
       bhua@us.ibm.com, dm@chelsio.com, leedom@chelsio.com,
       linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC][PATCH 1/1] cxgb3i: cxgb3 iSCSI initiator
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David Miller wrote:
> From: Jeff Garzik <jgarzik@pobox.com>
> Date: Fri, 08 Aug 2008 18:15:41 -0400
>
>   
>> * security updates for TCP problems mean that a single IP address can be 
>> PARTIALLY SECURE, because security updates for kernel TCP stack and 
>> h/w's firmware are inevitably updated separately (even if distributed 
>> and compiled together).  Yay, we are introducing a wonderful new 
>> security problem here.
>>
>> * from a security, network scanner and packet classifier point of view, 
>> a single IP address no longer behaves like Linux.  It behaves like 
>> Linux... sometime.  Depending on whether it is a magic TCP port or not.
>>     
>
> I agree with everything Jeff has stated.
>
> Also, I find it ironic that the port abduction is being asked for in
> order to be "compatible with existing tools" yet in fact this stuff
> breaks everything.  You can't netfilter this traffic, you can't apply
> qdiscs to it, you can't execut TC actions on them, you can't do
> segmentation offload on them, you can't look for the usual TCP MIB
> statistics on the connection, etc. etc. etc.
>
> It is broken from every possible angle.
>   

I think a lot of these _could_ be implemented and integrated with the 
standard tools.


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