This page allows setting how access is permitted to the router, which protocols, which ports & if internet/WAN access is allowed.
Web Admin Protocol: There are a number of exploits that work on the unsecured http protocol (ask TP-Link). Using https as the only administrative protocol for web pages is considered prudent by many security experts.
Remote Web Admin Access: Allow devices on the internet/WAN to connect to web pages served by the router for administrative purposes.
Enable Remote SSH Access
Allow devices on the internet/WAN to connect to the router at the deeper device level (with the right password of course). Local/LAN
SSH access is alway available