[strongSwan] NAT Traversal - Issues in understanding

Andreas Steffen andreas.steffen at strongswan.org
Fri Jul 22 09:42:41 CEST 2011

Hello Thomas,

this NAT-T bug affects IKEv2 only.



On 22.07.2011 09:15, Thomas Jarosch wrote:
> On Thursday, 21. July 2011 15:09:27 Andreas Steffen wrote:
>> Please be aware that a serious NAT-T bug was fixed in strongSwan
>> 4.5.1 and later versions which in the case of a responder sitting
>> behind a NAT router, caused the host to answer requests sent on
>> port 4500 on port 500 instead.
> Quick question: Does this affect IKEv2 / IKEv1 or both?
> Cheers,
> Thomas

Andreas Steffen                         andreas.steffen at strongswan.org
strongSwan - the Linux VPN Solution!                www.strongswan.org
Institute for Internet Technologies and Applications
University of Applied Sciences Rapperswil
CH-8640 Rapperswil (Switzerland)

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