Port 1723 (PPTP VPN)
Point-to-Point Tunnelling Protocol, a legacy VPN.
- Transport
- TCP
- Internet exposure
- Never expose
Should not be reachable from the internet.
Security notes
- PPTP's MS-CHAPv2 authentication is cryptographically broken; replace it.
When it shows up in your logs
Any PPTP use today is legacy and worth retiring.