Re: Traffic on port 53 fails on LTE but works on WiFi

2018-11-19 Thread John
OK! Firstly, thank you to everyone who took the time to reply. I think it's a safe assumption that WG is functioning as it should and that I need to identify another port on which to run. I will post a new thread on this topic. On Mon, Nov 19, 2018 at 10:28 AM Jacob Schooley wrote: > > Finally

Re: Traffic on port 53 fails on LTE but works on WiFi

2018-11-19 Thread Roman Mamedov
On Mon, 19 Nov 2018 09:54:38 +0100 Matthias Urlichs wrote: > Redirecting port 53 to their DNS (presumably one close to their LTE > endpoint) is reasonable, that should improve speed. There is no justification to mess with user traffic like that. If I specifically chose to use a specific DNS ser

Re: Traffic on port 53 fails on LTE but works on WiFi

2018-11-19 Thread Jacob Schooley
Finally, something I can actually help with. Yes, Verizon is actively blocking data through port 53. Back in 2015 I discovered by accident that VPN traffic through port 53 on Verizon was not monitored by whatever they use to calculate data usage. Even better, it worked on deactivated sim cards fo

Re: Traffic on port 53 fails on LTE but works on WiFi

2018-11-19 Thread John
Thank you both for the replies. I first tried reducing the MTU (/etc/wireguard/wg0.conf setting MTU = ) where I tried values of 1360, 1300, 1200, and 1100 but all met with the same result. I next tried the suggestion to run `tcpdump udp port 53` when I have a problematic client connect on LTE

Re: Traffic on port 53 fails on LTE but works on WiFi

2018-11-19 Thread Matthias Urlichs
On 19.11.18 08:32, M. Dietrich wrote: > Vodafone blocks UDP traffic on port 53 in LTE. They don't block it – they redirect it to their DNS proxy. > not even the handshake goes through. Not sure about the cause > for that, maybe they want to control your DNS that way. Redirecting port 53 to their D

Re: Traffic on port 53 fails on LTE but works on WiFi

2018-11-18 Thread M. Dietrich
Hi John, Quotation from John at November 18, 2018 19:55: > ... on port 53 ... do _not_ work when I connect via LTE > (Verizon supplying the data). On LTE, I am no longer able > to transfer data to/from the server peer but I can handshake > with it. Vodafone blocks UDP traffic on port 53 in LTE.

Re: Traffic on port 53 fails on LTE but works on WiFi

2018-11-18 Thread Quan Zhou
> 1) What can I try on the server peer side to diagnose? # tcpdump udp port 53 maybe you can try to `ping` and `traceroute` to your server in addition. On 11/19/18, John wrote: > I have a simple WireGuard VPN setup I use running WG on a home Linux > box and connecting to it with several iOS cli

Traffic on port 53 fails on LTE but works on WiFi

2018-11-18 Thread John
I have a simple WireGuard VPN setup I use running WG on a home Linux box and connecting to it with several iOS clients. The server peer is setup on port 53 since a the networkadmins of some remote WiFi networks my mobile devices seems to block udp traffic on higher ports. Encrypted connections wor