Steve,
I have added that port. Maybe is enough. Please try this. You need to update 
nDPI then recompile ntopng

Cheers Luca

On Oct 11, 2013, at 5:09 PM, Steve Clark <[email protected]> wrote:

> Hi Luca,
> 
> Is there some reason this can't be identified from the fact it is UDP to well 
> know port 4500?
> 
> The whole ipsec nat-t specification is defined in an RFC.
> http://tools.ietf.org/html/rfc3947
> 
> I can get a tcpdump but I don't control the endpoints so it will difficult to 
> get the
> initiation part, would that help?
> 
> On 10/11/2013 09:48 AM, Luca Deri wrote:
>> Steve
>> all protocols in nDPI should be reliable with the exception of Skype and 
>> Bittorrent that have some heuristic as you can see. Please provide me a 
>> trace (full packet size) in pcap format and I will debug this problem
>> 
>> Luca
>> 
>> On Oct 11, 2013, at 2:30 PM, Steve Clark <[email protected]> wrote:
>> 
>>> Hi Luca,
>>> 
>>> nDPI is mis- identifying ipsec nat-t traffic as skype - port 4500 is the 
>>> default port for ipsec nat-t.
>>> 
>>> https://supportforums.cisco.com/docs/DOC-16591
>>> 
>>> 
>>> <ccacjghd.png>
>>> 
>>> -- 
>>> Stephen Clark
>>> NetWolves
>>> Director of Technology
>>> Phone: 813-579-3200
>>> Fax: 813-882-0209
>>> Email: [email protected]
>>> http://www.netwolves.com
>>> _______________________________________________
>>> Ntop-dev mailing list
>>> [email protected]
>>> http://listgateway.unipi.it/mailman/listinfo/ntop-dev
>> 
>> 
>> 
>> _______________________________________________
>> Ntop-dev mailing list
>> [email protected]
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> 
> 
> -- 
> Stephen Clark
> NetWolves
> Director of Technology
> Phone: 813-579-3200
> Fax: 813-882-0209
> Email: [email protected]
> http://www.netwolves.com
> _______________________________________________
> Ntop-dev mailing list
> [email protected]
> http://listgateway.unipi.it/mailman/listinfo/ntop-dev

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