* Wireguard and double NAT
@ 2022-03-04 12:03 Hendrik Friedel
2022-03-14 22:17 ` Ashish SHUKLA
0 siblings, 1 reply; 2+ messages in thread
From: Hendrik Friedel @ 2022-03-04 12:03 UTC (permalink / raw)
To: WireGuard mailing list
Hello,
I have a running Server serving several Clients with a wireguard tunnel
already. For this, port 51820 UDP is porwarded in my router to the
Server.
Now, I have one Client with a bit of a tricky setup: I have two Routers
doing NAT. For one of those, I have no control, i.e. I cannot setup
portforwarding.
Is it still possible, to use Wireguard to create a tunnel between my
server and this tricky client? If so, is there anything special, that I
need to consider?
Best regards,
Hendrik
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Wireguard and double NAT
2022-03-04 12:03 Wireguard and double NAT Hendrik Friedel
@ 2022-03-14 22:17 ` Ashish SHUKLA
0 siblings, 0 replies; 2+ messages in thread
From: Ashish SHUKLA @ 2022-03-14 22:17 UTC (permalink / raw)
To: Hendrik Friedel; +Cc: WireGuard mailing list
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On Fri, Mar 04, 2022 at 12:03:05PM +0000, Hendrik Friedel wrote:
> Hello,
>
> I have a running Server serving several Clients with a wireguard tunnel
> already. For this, port 51820 UDP is porwarded in my router to the Server.
>
> Now, I have one Client with a bit of a tricky setup: I have two Routers
> doing NAT. For one of those, I have no control, i.e. I cannot setup
> portforwarding.
>
> Is it still possible, to use Wireguard to create a tunnel between my server
> and this tricky client? If so, is there anything special, that I need to
> consider?
IIUC, it's quite possible as long as none of the routers are filtering packets
with following constraints:
- client has to initiate the connection
To increase the reliability of the connectivity:
- preferably not use a fixed listen port in the client, esp. if it's roaming,
or you failover between gateways
- setup PersistentKeepalive
I have a similar setup with my internet connection (behind double NAT), and
it works fine.
HTH
--
Ashish | GPG: F682 CDCC 39DC 0FEA E116 20B6 C746 CFA9 E74F A4B0
"Should I kill myself, or have a cup of coffee?" (Albert Camus)
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