topic Re: Port forwarding not working ? in Broadband

Port forwarding not working ?

JRoyD — Wed, 18 Mar 2026 13:17:54 GMT

Hi there,

I have a DNS domain name that should be being resolved to my external IP address.

I have used the MySky app to setup port forwarding of the 2 ports I need to my internal IP address. When I use my app to connect to this internal to my network this all works, but when I go external it does not connect.

Now, I cannot find anywhere to find any debug if I'm even resolving / hitting this at all ??

I've called tech support and they clearly didn't understand anything I was talking about as they went away to research this and came bac 2 hours later telling me that they'd need to book an engineer appointment ?

Any ideas on how I can trace this ? I had this all working before when I was on straight DSL. I've not been able to get this working once I moved onto full fibre.

Thanks,

Roy.

Re: Port forwarding not working ?

JimM1 — Wed, 18 Mar 2026 13:58:02 GMT

@JRoyD What DDNS server are you using and did you set that up. White or Black sky Hub.

Sky Max change settings link.
https://www.sky.com/help/articles/change-wifi-max-hub-settings-a

Re: Port forwarding not working ?

JRoyD — Wed, 18 Mar 2026 14:03:14 GMT

Using https://www.noip.com/ I have their client running on an internal machine updating the external IP address.

It's the White Max hub that I have.

Re: Port forwarding not working ?

JimM1 — Wed, 18 Mar 2026 14:08:04 GMT

@JRoyD Is the client resolving the IP correctly. www.whatismyipaddress.com to find the Hub IP.

Re: Port forwarding not working ?

JRoyD — Wed, 18 Mar 2026 14:10:59 GMT

I can see that my client is registering the WAN IP address to the DNS service and the router is using MAP-T at 1:1

Re: Port forwarding not working ?

JRoyD — Wed, 18 Mar 2026 14:11:39 GMT

Yes, and that matches what the client is storing online.

Re: Port forwarding not working ?

JimM1 — Wed, 18 Mar 2026 14:16:56 GMT

@JRoyD Have you looked at what your Broadband Shield is at in the account?

Re: Port forwarding not working ?

JRoyD — Wed, 18 Mar 2026 14:17:19 GMT

Turned that off

Re: Port forwarding not working ?

JimM1 — Wed, 18 Mar 2026 14:18:00 GMT

@JRoyD When?

Re: Port forwarding not working ?

JRoyD — Wed, 18 Mar 2026 14:18:33 GMT

it's never been on

Re: Port forwarding not working ?

JimM1 — Wed, 18 Mar 2026 14:20:24 GMT

@JRoyD Do you still have a black sky Broadband or Q Hub?

Re: Port forwarding not working ?

JRoyD — Wed, 18 Mar 2026 14:23:25 GMT

White Max hub for full fibre

Re: Port forwarding not working ?

JimM1 — Wed, 18 Mar 2026 14:25:32 GMT

@JRoyD You said that already, that was not the question asked, are you new to sky then with ONLY a Max Hub!

Re: Port forwarding not working ?

JRoyD — Wed, 18 Mar 2026 15:22:08 GMT

I had sky FTTC for years on an Sky Q box and then migrated to Sky full Fibre with the Sky Max box last year. I had port forwarding working fine on the old sky FTTC solution, but now it doesn't work on the new Sky full fibre. But I can't see any debug anywhere to help me.

Re: Port forwarding not working ?

JimM1 — Wed, 18 Mar 2026 15:29:41 GMT

@JRoyD There is not any debug for checking, you will have to use external tools to see what and where the connection is falling down!

You can post your PF rules up and someone will look at that! Internal you said was fine so you are just not getting through the Max firewall with the DDNS IP lookup.

Re: Port forwarding not working ?

JRoyD — Wed, 18 Mar 2026 15:46:59 GMT

Ports are showing closed onm port check tool, even though MySky app shows them as configured for forwarding.