@Hannibal_Lack Thanks for your reply and time :-). I will have a look at Mike's site. I already changed the local ip address of the router and the dhcp range.

@Kevin_Z Thanks for your reply. Like you mentioned was this the solution, when I am in my local network, i can access the web UI with the global IP address or the DDNS. Switching to another network,...

I bought a new VR600v and configured it successfully for my Telekom VDSL 100 here in Germany. I got one issue, under advanced settings the remote access is diabled, so it should not be possible to...

@babasse29 Have you found a solution for your problem? On my new VR600v I also disabled the remote access, but i am still able to login from the internet.