I am unable to get this working again (port forwarding). I'm not an expert, just a novice and have tried the following actions in my B525 (using XBOX as a test)

- Setup "Virtual Server" (Huawei's language) and setup port forwarding on WAN & LAN port 3074 for UDP & TCP to the xbox's IP
- I have given the xbox a reserved IP
- I have tried putting xbox IP in to the DMZ and enabling
- I have tried changing NAT setting between Cone & Symmetric and bacl
- I have tried turning the whole firewall off (for 30 secs), and disabling all firewall options such as "Enable IP address filter", "Disable WAN port ping", "Enable domain name filter", and "Enable MAC filter"
- I have turned uPNP on and let the xbox try to negotiate. I can see from router that it's requested port 3074
- I have added "Special Application" to the xbox IP using the Special application option in router
- I have rebooted router a couple of times

Non of this works and I still (when doing a port scan) get port closed.

If anyone has any other ideas I am happy to try. I know the company I work for have Three as a client (Glasgow Office). If all else fails I could ask internally for help if it's something important to get to the bottom of.

D'oh, not sure why I didn't check this but the WAN IP is 10.* (so internal), however the IP address to the world is 188.*. When the service worked I had a proper external WAN IP.

The issue is CGNAT I am thus assuming. I've contacted Smarty to see if there is an APN i can use that will give an external IP address. I am using 3internet at the moment which appears does have the capability to hand these out as had them yesterday before my first reboot.

In reply to a post by gary333:

D'oh, not sure why I didn't check this but the WAN IP is 10.* (so internal), however the IP address to the world is 188.*. When the service worked I had a proper external WAN IP.

The issue is CGNAT I am thus assuming. I've contacted Smarty to see if there is an APN i can use that will give an external IP address. I am using 3internet at the moment which appears does have the capability to hand these out as had them yesterday before my first reboot.

I'm so confused, some people have it working some don't. What are the requirements? Hum..

I don't have any specific need for it. Just trying out what is possible .

To further add to the story I have tried the following sim cards today

1) Smarty sim
2) Three PAYG (3-2-1)
3) Three Mobile Broadband sim

Both the Three sims in a Netgear Aircard got allocated public IP addresses when using the "3internet" APN. I didn't bother trying the three.co.uk APN.

The Smarty sim using 3internet APN gave out internal IP address (10.*) I tried the smarty specifc apn (mob.asm.net) this also gave out an internal IP address.

It appears the APN is not the deciding factor for Smarty sim card like it probably is for Three sims. What you end up with on Smarty must be random (if you are allocated a public IP address) as i had one last night (94.*) but cannot get one today using different equipment and APNs.

Edited by gary333 (Wed 31-Jul-19 17:00:06)

If you add friends - for each sim you add you get a free month on SMARTY - so add ten friends - sign up for the £5/month - and get 10 months free- that's what I've done -

Using a HUEWAI (sic) router running my MAC, Apple TV, and PS4 w Projector - full home setup basically for £25/30 including mobile phone unlimited...

+ Google VOICE for a geographic landline at $8- buying an OBI ATA would work out cheaper in the long run - but it would take a while... - then your VOIP Calls could be 0.002/min

Hi, I am also trying (and failing) to get port forwarding to work on my Three 4G HomeFi connection through a Huawei B535.

I have set up port 22 as a Virtual Server in the router web interface pointing to my Raspberry Pi and I've checked that my WAN IP is a proper external IP (188.*), so I don't know if it's an APN issue like others seem to have had.

Any tips/tricks?