GL-E750 WIFI on WG or OpenVPN not connected

Technical Support for Routers
1

Hi all,

I'm having trouble connecting to a WIFI source on my GL-E750 router. Firmware 4.0. The WIFI is password protected and does not have a captive portal. Connection works fine without a VPN connection if just repeating the signal.

I've tried both Wireguard and OpenVPN connections, but they seem to get stuck in yellow ocassionally the connection becomes green but no websites can be accessed. Then it usually drops again.

Any suggestions on what to try?

DNS settings below:

Screenshot 2024-08-17 at 3.49.02 PM
Screenshot 2024-08-17 at 3.49.02 PM1326×1016 61.8 KB

WG log below:

Sat Aug 17 15:39:20 2024 daemon.notice netifd: Interface 'wgclient' is setting up now
Sat Aug 17 15:39:31 2024 daemon.notice netifd: Network device 'wgclient' link is up
Sat Aug 17 15:39:31 2024 daemon.notice netifd: Interface 'wgclient' is now up
Sat Aug 17 15:39:44 2024 user.notice wgclient-up: env value:T_J_V_ifname=string J_V_address_external=1 USER=root ifname=wgclient ACTION=KEYPAIR-CREATED N_J_V_address_external=address-external SHLVL=2 J_V_keep=1 HOME=/ HOTPLUG_TYPE=wireguard T_J_V_interface=string J_V_ifname=wgclient T_J_V_link_up=boolean LOGNAME=root DEVICENAME= T_J_V_action=int TERM=linux SUBSYSTEM=wireguard PATH=/usr/sbin:/usr/bin:/sbin:/bin J_V_interface=wgclient K_J_V= action ifname link_up address_external keep interface J_V_link_up=1 J_V_action=0 T_J_V_address_external=boolean N_J_V_link_up=link-up T_J_V_keep=boolean PWD=/ JSON_CUR=J_V CONFIG_SECTIONS=global AzireVPN Mullvad FromApp group_1506 group_824 group_3791 group_6076 peer_2001 group_9539 peer_2002 group_3067 peer_2003 group_6854 peer_2004

2

It seems that your upstream Wifi blocks VPN. Could this be possible?

3

That’s certainly possible. It’s the first time I’ve encountered this in a public library.
Are there settings I can adjust to bypass this with OpenVPN or WG?

I am still able to use VPN thru the native Surfshark app on my phone using IKEv2

4

if use the E750 sim cellular network, does the VPN client connect and work well?

5

You may need to do more test:

  1. Does the Internet works without vpn? Pls confirm that your get through the portal page and have normal Internet.
  2. Does vpn connect on Carrier network?

If both yes then it seems that the network blocks vpn.

Then you can try change vpn port. Some vpn use 443 as server port. If the network simply blocks popular ports then using 443 may work.

6

Yes to 1 and 2 above. I suspect a block, but I was able to get online yesterday for several hours after adding a new location on the VPN, but as of today it's not working again.

How can I change the port to 443?
Are there other firewall settings to try in settings?

7

It is related to the VPN server provider, required to check their VPN configuration, find it 'endpoint' which use non-443 port

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