Ways to gain remote access

• VPN access
• SSH tunnelling
• Remote desktop: x2go, rdp, pcoip
• Desktop over browser: Apache Guacamole
• Commercial, over internet: Teamviewer, AnyDesk, Zoho assist, ...

Some important ports

Firewall

• Ports open on my machine
• Ports needed to be accessed on remote machine
• Network routing over the port