Whether using a manual configuration or a lightweight extension, these features are central to the NordVPN experience:
: Automatically blocks internet access if the VPN connection drops, preventing data leaks.
While does not officially use a ".opk" file format for its standard applications—which typically use .exe (Windows), .dmg (macOS), or .ovpn (manual OpenVPN configurations)—the .opk extension is commonly used as an "Open Package" for OpenDingux handheld gaming devices like the RG350.
: Blocks intrusive ads, trackers, and malicious websites based on DNS filtering.
: Allows you to choose specific websites or domains that bypass the VPN connection while keeping others protected.
: Replaces your real IP with a secure one from a NordVPN server to prevent tracking by your ISP.
: Matches your browser's time and date with the server location to avoid detection by sensitive sites.