How can I check if traffic is blocked / unblock traffic on my full fibre package?

[#1]

For work we use DragonMedicalOne software (from microsoft) but it wont work through our home broadband with Plusnet

The entire rest of the work systems work except that programme. The programme works fine at work, other venues and from mobile hotspot so its an internet factor rather than a PC / software factor.

Work IT team have tried VPNs & other work arounds but it simply wont allow the programme to connect at home, and mobile hotspot is too slow to get any other work done, so unless we can get this resolved we'll need to be looking to another ISP

I've logged into my account dashboard and Safeguard is off so I don't think any traffic should be being blocked as a default. What else can I check? What else might this be?

Have tried contacting customer service via X but no response at all after nearly a week!

[#2]

---

@drsljones wrote:

What else can I check? What else might this be?

---

If you've had your Plusnet account for a while, or have a static WAN IP address,

you might have Plusnet's Broadband Firewall blocking vulnerable port numbers before the traffic reaches you,

sometimes resulting in symptoms similar to what you describe.

Log in to your Plusnet "Member Centre"

If your account has this "Broadband Firewall", it should be here - https://www.plus.net/member-centre/broadband/firewall 

If that exists, then set it to "Low" or "Off", save the setting, then reboot your router, and see if that has fixed your problem.

.

[#3]

Having just done a quick google, it seems that Dragon Medical One client software only uses port 443 (i.e. the normal HTTPS port), and doesn't require any other ports at all - so it is very unlikely that it is a port that is blocked.

It does need to reach both the server and the certificate revocation list server - so it is possible that DNS isn't resolving correctly (whether by a firewall rule or just a dodgy resolver). You could try setting the DNS on your PC to use Cloudflare 1.1.1.1 or Google  8.8.8.8 if it is currently getting the Plusnet DNS from the IP connection.

Another possibility is that your IP address is being blocked at the far end - for example if it is deemed to be a non-UK IP - but using a VPN should change your IP address so that can probably be ruled out.

You could try a traceroute to the relevant servers to see if there is a routing loop or something weird going on.