Static IP Address for SIM / Remote Access to SIM Router??

[Scarletpimpofnel]

I have a Vodaphone (TalkMobile) SIM in my home WiFi router (much cheaper than paying for phone line+Bband).

It all works well except I want to remotely access the router now and again (via the internet). I can do this using a url like https://MyIPAddress so all good... except my SIMs IP address isn't static and can't be made static according to TalkMobile.

Is there anyway to get around this issue as obviously when the IP address changes I won't be able to get remote access anymore (and won't know the new IP unless I can get on to the router to see it)?

Thanks

[S6PNJ]

Can you use a service like noip.com then have an RPi or similar running at home with the DUC on it?

[.:ian:.]

^^ yeah that, or to extrapolate a little, you need something running at home all the time checking the external ip and updating, either a noip/dyndns entry, or if you had a domain just update the A record, or even just sending an email saying what the new ip is.

https://www.ionos.co.uk/digitalguide/server/tools/...

[OldGermanHeaps]

Wont work on vodafone without a fixed ip contract you only have cgnat.
Only network that doesn't use cgnat on non fixed ip contracts is 3, even then you need to use a certain apn and force ipv6 off.
Then you can use dyndns or noip or similar.
Or you could just setup a vpn from your portable devices to your home network.

[Captain_Morgan]

Tailscale or other providers can set this up without a static ip.

[Ydnaroo]

https://www.3grouterstore.co.uk/fixed-ip-sim-cards...

Don't know anything about them. Looks expensive.

[Scarletpimpofnel]

Ydnaroo said:

https://www.3grouterstore.co.uk/fixed-ip-sim-cards...

Don't know anything about them. Looks expensive.

That would be the easiest solution but yes very expensive. £60 pcm for 20GB 4G data (Vodafone). I pay £16pcm unlimited 4G data with TalkMobile (Vodafone).

[Scarletpimpofnel]

S6PNJ said:

Can you use a service like noip.com then have an RPi or similar running at home with the DUC on it?

Yes I think this is pretty much what I will have to do. Thanks.

[Scarletpimpofnel]

Thanks all for your thoughts and ideas. I appreciate it.

[Motorman74]

As mentioned above, I'd use tailscale every time over dynamic DNS providers like noip etc, but I have a device that's on 24/7 - but without that you are likely to end up at some point (probably when it matters most) with an invalid dyndns address anyway.

[Scarletpimpofnel]

Motorman74 said:

As mentioned above, I'd use tailscale every time over dynamic DNS providers like noip etc, but I have a device that's on 24/7 - but without that you are likely to end up at some point (probably when it matters most) with an invalid dyndns address anyway.

Thanks. I had a quick scan of their web site but can't immediately see what I need but will look later.

[OldGermanHeaps]

Scarletpimpofnel said:

S6PNJ said:

Can you use a service like noip.com then have an RPi or similar running at home with the DUC on it?

Yes I think this is pretty much what I will have to do. Thanks.

That wont work. Your current sim is cgnat. Noip and the like wont work properly. Your wan address is shared with lots of other subscribers. You cant host inbound connections through the wan ip. Even if it did work its pretty risky to have your routers admin page accessible from the wan side.
See if your router allows you to setup a vpn server, or setup a device in your house with either a vpn server or remote desktop client.

[Scarletpimpofnel]

OldGermanHeaps said:

That wont work. Your current sim is cgnat. Noip and the like wont work properly. Your wan address is shared with lots of other subscribers. You cant host inbound connections through the wan ip. Even if it did work its pretty risky to have your routers admin page accessible from the wan side.
See if your router allows you to setup a vpn server, or setup a device in your house with either a vpn server or remote desktop client.

My bold ...

I see what you're saying and you're right (setting aside the security issue you also mention!)

I have just noticed whilst looking for vpn server set up that my TP-Link router offers something called tP-Link Cloud which it claims allows remote management of the router from an app. I'm not sure if that app has to be on a device on the local WiFi network or can be remote externally. If the latter then that is what I want... though I doubt it will do that but I'll look into it.

Thanks for your advice.

[Scarletpimpofnel]

I've just set up the TP-Link cloud tether app on my mobile and it connects to the router UI and allows me to edit router settings etc fine (with 2FA activated too).

... And disconnecting my phone from my WiFi and using 4G only, the app also connects to the router. So success! That is basically what I wanted to achieve.

Apologies for wasting everyone's time when the TP-Link Cloud and Tether App seem to do what I want and is built in. Thanks all.