ASUS RT-AX58U and wireguard: only 1 client works

[guill69f]

Hi everyone, I am new to the forum and to the use of wireguard.

I have activated and tested wireguard yesterday on a ASUS RT-AX58U router (updated stock firmware), with first client set-u on a samsung S10+: it works great (tested with phone on 4G). Then i followed the same protocol to install wireguard clients on other devices: none are working and i have not managed to find helpful instructions on the www to understand why and how to fix. And then i found SNB Forums ;-)

I have done all my tests while on local network, and then i also connected all my devices to a hot spot started from my phone on 4G.

Can anyone please guide to help to solve this or point to other threads where this has been discussed and solved? Thanks a lot!

 

[jacklul]

You did add multiple VPN clients in the router's web UI, right? A common mistake is to use the same config on multiple devices.

 

[guill69f]

You did add multiple VPN clients in the router's web UI, right? A common mistake is to use the same config on multiple devices.

Yes, I clicked on the '+' sign next to the test VPN Client, and created 3 additional clients after the first one.
Then for my samsung tab, i did as for the phone, i used the QR code option. For 2 other devices (surface and macbook), i exported the config file.

If i look at each of the client config, this is what i can read (with keys removed and endpoint changed...):

for the Samsung S10+ (the only one working):
[Interface]
PrivateKey =
Address = 10.6.0.2/32
DNS = 10.6.0.1

[Peer]
PublicKey =
AllowedIPs = 0.0.0.0/0
Endpoint = my.domain.com:51820
PersistentKeepalive = 25

for the samsung tab:
[Interface]
PrivateKey =
Address = 10.6.0.3/32
DNS = 10.6.0.1

[Peer]
PublicKey =
AllowedIPs = 0.0.0.0/0
Endpoint = my.domain.com:51820
PersistentKeepalive = 25


for the surface:
[Interface]
PrivateKey =
Address = 10.6.0.4/32
DNS = 10.6.0.1

[Peer]
PublicKey =
AllowedIPs = 0.0.0.0/0
Endpoint = my.domain.com:51820
PersistentKeepalive = 25

for the macbook:
[Interface]
PrivateKey =
Address = 10.6.0.5/32
DNS = 10.6.0.1

[Peer]
PublicKey =
AllowedIPs = 0.0.0.0/0
Endpoint = my.domain.com:51820
PersistentKeepalive = 25

 

[guill69f]

back again to say that everything is working like a charm at the moment. not sure what i did wrong yesterday during my testing (i don't think i tested incorrectly though), but well, i have not changed anything during the day and now all works fine... so end of the story here