TCP port 443 is the "stealth bomber" of network traffic. It is rarely blocked by firewalls because it is the port used for secure web browsing (HTTPS). By wrapping the VPN tunnel inside TCP 443 (SSL/TLS), the Sophos client ensures connectivity from even the most restrictive networks—hotel Wi-Fi, coffee shops, or restrictive ISPs in foreign countries. The reliability of this protocol ensures that when a user hits "download" and connects, they stay connected.
If the virtual network adapter fails, reinstall the client with administrator privileges. sophos ssl vpn client download
Import your connection profile ( .ovpn or .scx file) downloaded from the User Portal. TCP port 443 is the "stealth bomber" of network traffic