Port forwarding issue on router blocking 1701 for LT2P VPN access

[MrM]

I dont know if anyone can help and you will need to forgive me as I am not as savvy as I would like to be.

I have a Huawei 4G router (cant get fibre or decent ADSL connection where I am). At a previous house I ran a VPN server from my Synology NAS using L2TP.

My Huawei router has some inbuilt L2TP functionality and as such wont allow me to forward port 1701 which appears to stop me in my tracks for what I want to achieve. A number of ports are "blocked" from forwarding, I presume due to other inbuilt router functions.

Ive been looking for a "better", more flexible router, but there isnt much option in the 4G space and the performance of my router is actually very good. Can anyone advise if there is a workaround for me to get my VPN server up and running?

Thanks!

 

[MrM]

Thanks for the reply. Via ddns I can get access to my NAS from outside the home.... so assumed that setting up a VPN server shouldnt be too much trouble. I need to look into the CGNAT issue further.

 

[MrM]

Im sure the issue is because the router hard blocks it (says so if I try to forward it). So Im curious if anyone knows of a work around? Whether 1701 is set in stone, or if I can somehow use a different port in the Synology VPN framework somehow.

 

[MrM]

Huawei B525