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[mc36 <>]

hi,
well, so freerouter's sdwan server collects the clients and distributes the 
list to each of them...
one can configure to use the natted address... then the clients will pick up 
a port and start sending
packets to the above list... this implements nat hole punching... then, each 
individual client can
be configured to be a hub, and to try listening first instead of sending 
first... this both used
together to accept asymmetric natted clients... my sdwan deployment have a 
client who is on a lte
stick so he's behind double nat.. first by the mobile stick, second is the 
carrier grade nat,
which is a rough asymmetic nat... and nevertheless to say that it can connect 
flawlessly to
the hub configured to do the listen first... but it fails to connect to other 
clients because
nat hole punching is not enough alone, one needs to first listen from the 
remote for it to work...
moreover, if both sides are behind nat, then both have to be symmetric nat 
for a successful
connection... so all in all, freerouter have better tools than this wgsd 
alone... :)
br,
cs

On 12/14/22 16:49, Moises R. N. Ribeiro wrote:
> Csaba,
> I hope you're doing ok. A quick question: Is there an equivalent service (or 
> combination of freeRtr servers like Stun) for the job this toll does?
> https://github.com/jwhited/wgsd <https://github.com/jwhited/wgsd>
> Note that this requires a plugin to be added in the WG server...
> My intuition tells me that all these WGSD (mainly hole-punching functionality) are already done in case SD-WAN is used... and evidently proper routing is configured to allow cross 
> connection/visibility   between client networks behind NATs...is that correct? If so, can we deal also with symmetric NAT in the current SD-WAN implementation of freeRtr? It seems 
> that Stun is helpless for dealing with such symmetric NAT, right?
> Regards,
> Moises