@Bonesoul It depends on how precise you want to measure that. For example: You could use a free apps like Wi-Fi Analyzer to see the signal levels in the negative dBm values and OOKLA's Speedtest app...

@uttamsolanki If you forgot the login password for the extender you'll need to reset it to factory defaults and reconfigure again: With the extender powered on, use a pin to press the RESET button...

@IanDo If you're trying to configure an IPSec tunnel between your VR2100, here's how. If you want to route all the traffic through a VPN server, i.e. accessing the internet by using the VPN Server as...

@pajtaz Have you tried to enable the remote management for WDR3600: What's the WAN IP address of the WDR3600 ? Is it a part of your lolcal network subnet ?

@JanDN Yes, that's possible - just set Archer C24 in AP mode according to this guide (Case 1).

@Regiss For WR902AC only Router and Acces Point modes are compatible with tether app - details.