Website access via ethernet

[Lewisj_smith]

I have my work windows laptop connected to my router via ethernet. All is fine with the connection with the exception that I cannot access one particular HTTPS website. Oddly, if I unplug ethernet I can then access the website over wifi without relocating to another room. My employer IT department has indicated this does happen from time to time with some ISP providers and has suggested it could be a configuration / setting issue within my router. I moved to Vodafone from BT in January 2023 and never experienced this issue with BT. Does anyone have any experience with this issue and if you resolved it would you kindly share how?

[Cynric]

@Lewisj_smith  There could be a number of reasons, but things to consider;

From the sequence of events in your description it sounds as if the laptop is connected to two routes (wired to work network and WiFi to Vodafone).

Your employer has a firewall policy set which excludes that website, but they have been sloppy and only blocked it for the wired port.

Your employer has a VPN (or Microsoft Direct Access) tunnel, but they have been sloppy and only configured it for the wired port.

Your employer has a VPN (or Microsoft Direct Access) tunnel and it uses IPv6 within the tunnel and the site is blocked by the company firewall, but the WiFi is connecting to IPv4 at home and so bypasses that site.

For some reason the ethernet and WiFi are using different DNS configurations. Given it is a work laptop these should have a policy configured.

Company policies are usually downloaded (as a PAC file) as soon as the device connects to the corporate network.

Don't use your company asset for visiting this site. I'm presuming that it is not work related, if it is related to work get your techs to whitelist it.