[33096] in North American Network Operators' Group

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Re: RFC1918 addresses to permit in for VPN?

daemon@ATHENA.MIT.EDU (Sean Donelan)
Fri Dec 29 02:27:10 2000

Date: 28 Dec 2000 23:25:14 -0800
Message-ID: <20001229072514.4261.cpmta@c004.sfo.cp.net>
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To: map@internet.org.ph
From: Sean Donelan <sean@donelan.com>
Cc: nanog@merit.edu
Errors-To: owner-nanog-outgoing@merit.edu


On Thu, 28 December 2000, "Miguel A.L. Paraz" wrote:
> Our DSUA filter had to have a small hole punched in since a customer had a VPN
> (I do not know yet as to what kind) which was receiving packets sourced at 
> 172.17.x.x.  Is this a misconfiguration on the sender's end, or a "feature."  
> 
> I think there was earlier discussion on VPN's requiring ICMP (echo?)

Its not a very private or virtual network if it leaks addresses into a
data stream visible to your filters.





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