[johnnyNobody999]

I'm using wireguard to connect to nordvpn on my Netgear R9000 router. When I initially setup, I was able to get to my son's school parent portal but now I can't. I can get to every other site that I normally use as well as other sites without any problem. When I run drill on that portal it returns SERVFAIL. It does that when I specify a DNS server that I don't use like 8.8.8.8 or 1.1.1.1 or my ISP DNS server (i.e. drill @8.8.8.8 infinitecampus.org), also. No DNS issues with any other site. I tried turning off the wireguard but that didn't fix the issue. The school district says they haven't made any changes. Probably not since I can use my Pixel 7 on cell data and can access the portal. Using an online DNS check service (dnschecker.org), infinitecampus.org resolves to 198.145.32.30. Using that in a browser doesn't bring up the web site either. So, what could be the problem?

[kernel-panic69]

Refer to the appropriate section and troubleshooting guide:

Sticky: WireGuard guides and documentation

Please consider sharing appropriately sanitized configuration details if you want further assistance.

[johnnyNobody999]

[bushant]

Running WG on proton I cannot access either one also.
Disabling WG I can reach infinitecampus.org but not 198.145.32.30 502 Bad Gateway Not Secure.

Try a different browser or ask your ISP if they are blocking you out for some reason.

BTW if it turns out to VPN related in some way you can use Destination Routing
to access individual sites WAN only or VPN only.
Eliminating the need to disable WG.

[kernel-panic69]

I can access infinitecampus.org "from Germany" just fine. I can also access it from the guest wifi and regular workstation at work just fine. Browser issue and/or ISP issue and/or VPN issue, methinks.

[johnnyNobody999]

Got the problem resolved by putting DNS addresses in the "DNS Servers via Tunnel" field. But I'm confused as to why this is necessary. All the other sites I go to don't need this. Not only that, not all DNS addresses resolve this one website when put in the "DNS Servers via Tunnel" field. Right now I'm using 1.1.1.1 and 1.0.0.1 in the "DNS Servers via Tunnel" field.

[kernel-panic69]

Well, without screenshots, we have no idea what you're doing. I just do not see how Nord's DNS servers are failing to resolve the sites.

https://support.nordvpn.com/hc/en-us/articles/19587726859793-What-are-NordVPN-DNS-server-addresses

I don't expect anything fruitful after this reply, per usual du jour modus operandi.

[johnnyNobody999]