Remote Access to Fritzbox 7530 Mesh Repeaters

Have been struggling with this one for a while and hope somebody may be able to offer some advice.
I have a three node mesh network using Fritzbox 7530 routers installed at a remote site and I want to be able to access all three boxes from home to support them.
I have set up MyFritz sharing on the mesh master and can access that with no problems. If I set up MyFritz sharing for either of the mesh repeaters, using the HTTPS server option to define the device I wish to port share with, I have discovered that whichever of the two routers I configure first gets allocated port 443 and I can connect to this perfectly as well. The second mesh repeater clearly cannot use port 443 too, so I use another port number – say 8443 – but this fails to connect. Closer inspection has revealed that the address that is uploaded to the MyFritz account is still set to port 443 even though I have manually selected port 8443.
If I reverse the order in which I configure the two repeaters, I can successfully connect to the second one but then not the first. This shows there is nothing wrong with the software or hardware of either of the two mesh repeaters themselves as both work perfectly as long as they are the first configured.
It seems to me the problem is that the Fritzbox mesh repeater is listening for connections on port 443 even if it is configured to share using another port. Is there any way in which the Fritzbox can be re-configured to listen for HTTPS connections on a different port number?
I have a temporary workaround by setting up the second mesh repeater as an HTTP server and then port sharing using port 80. This works fine and I have remote access to all three nodes currently. However, I have another 7530 that I am shortly going to introduce to the network as a third mesh repeater and so need to find a solution that will allow me remote access to all 4 boxes.

Your best option is probably to contact AVM support

If you have 3(+) routers all at the same remote site, your better option is to setup a VPN connection to the remote site and then use that to manage any system on that network which scales better than individual MyFritz sharing.

The VPN tunnel endpoint would be whichever Fritz!box is directly attached to the Internet, which logically should be the mesh master.

The latest firmware on a Fritz!box normally includes Wireguard which is likely to be the easiest option to setup without sacrificing throughput.

The Windows/Mac/Android/IOS clients are free to download.
The clients for most other Unix-like OSes are readily available through their respective software stores (package managers).

Whenever you need to manage more than one networked site, you'll save yourself potential hassle if each site uses a distinct IP subnet, and avoiding the common 192.168.{0|1}.* which will almost certainly overlap with the defaults for home and SOHO routers.

Edited by prlzx (Sat 23-Sep-23 13:27:57)

In reply to a post by prlzx:

Whenever you need to manage more than one networked site, you'll save yourself potential hassle if each site uses a distinct IP subnet, and avoiding the common 192.168.{0|1}.* which will almost certainly overlap with the defaults for home and SOHO routers.

Or just make sure your home subnet is none of the common ones. As long as you do not need to connect to more than one remote location at the same time, this will avoid having to make sure every remote site using an uncommon subnet.