Comment on Weird Wireguard issues I could use some help with.
nightrunner@lemmy.world 11 months ago
Did you setup a NAT on the firewall? You have to setup a static NAT on the interface that your Public IP sits on and to the private IP address of your VPS (you are using a private network space from one of the other interfaces on your FW right?).
Make sure that the policy that you create with the NAT includes UDP 51820 (unless you changed the default port) People often mistake using TCP which is a different protocol. If that doesn’t work, then look at the traffic on your FW
Meant to say if you still get stuck, run Wireshark on your FW and your VPS and run a tcp dump and filter the traffic to see where the data stops.
You can also use traceroute to your public IP on the port 51820 and check your connectivity or even curl: -v //publicip:51820
Yeah I would probably try if the phone can actually access anything on that port.
On router: netcat -vvvl 0.0.0.0 51820
On phone: http://router_ip:51820
The browser will fail opening it but on router you should see the first incoming HTTP GET packet.
Or one could run a local shell on the phone (assuming android) and try netcat too.
I have an network tools app that lets me test arbitrary ports and I do see those packets on a tcpdump, but this app (and you’re suggestions above) are all TCP while Wireguard listens on UDP. I haven’t come up with a way to test UDP from the phone yet.
Netcat can do UDP with -u flag, to get netcat on the phone (android) you could try local shell (Connect Bot app can do it) and try calling the local netcat (nc, though it’s a simple busybox implementation so it might not have all the features). Though not sure if udp would just work like that.
They call it a tcpdump but Wireshark analyzes all network traffic. You can use the udp.port == 51820
Do you have a laptop? Probably more tools and easier to test from there.
SeeJayEmm@lemmy.procrastinati.org 11 months ago
There’s some confusion here. I’m running wireguard on my opnsense router and I’m trying to connect my Android phone to it.
I just used the VPS to help troubleshoot to show other clients can connect to opnsense AND the phone can connect to other servers but the phone and opn won’t talk.
I know this screams config issue. I’ve gone over it and rebuilt it multiple times. I can’t find anything wrong. Someone else asked to see configs so I’ll post those tomorrow.
stown@sedd.it 11 months ago
It is a config issue. Allowed IPs for your client should be 0.0.0.0/0 not 0.0.0.0/32