Re: [v6ops] Extension Headers / Impact on Security Devices

Mark ZZZ Smith <markzzzsmith@yahoo.com.au> Tue, 19 May 2015 23:09 UTC

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Date: Tue, 19 May 2015 23:09:12 +0000
From: Mark ZZZ Smith <markzzzsmith@yahoo.com.au>
To: Gert Doering <gert@space.net>
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Subject: Re: [v6ops] Extension Headers / Impact on Security Devices
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      From: Gert Doering <gert@space.net>
 To: Mark ZZZ Smith <markzzzsmith@yahoo.com.au> 
Cc: Enno Rey <erey@ernw.de>; "v6ops@ietf.org" <v6ops@ietf.org> 
 Sent: Sunday, 17 May 2015, 7:18
 Subject: Re: [v6ops] Extension Headers / Impact on Security Devices
   
Hi,

On Sat, May 16, 2015 at 01:22:26AM +0000, Mark ZZZ Smith wrote:
> So quickly, how have IPv4 options been handled? 
> They too can vary the location of the TCP/UDP etc. headers in an IPv4 packet. 

"Drop packets with IP options".
/ So you're actively doing that? I've configured routers to drop IPv4 packets with source route options, but not IPv4 packets with any options.

> How have the variety and variable number of TCP options been handled? They 
> too can vary the location of the TCP segment payload.

But they do not move the location of the TCP port info.
/ So what do you do with non-TCP or UDP traffic, that doesn't have port numbers? Drop that too?
/ What particular problem are you trying to solve with forwarding plane ACLs? Dropping DDoS traffic? How would you handle a DDoS that doesn't use TCP or UDP, or for which the TCP/UDP ports aren't accessible?


Gert Doering
        -- NetMaster
-- 
have you enabled IPv6 on something today...?

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