1723
PPTP
High RiskTCP — Security & VPN
Port Overview
Port Number
1723
Service Name
PPTP
Transport Protocol
TCP
Category
Security & VPN
Security Risk
High
Port Range
Registered (1024-49151)
What is Port 1723?
Point-to-Point Tunneling Protocol. A VPN protocol developed by Microsoft. Considered cryptographically broken and insecure — use WireGuard, OpenVPN, or IPsec instead.
TCP
Security & VPN
Commonly Used
Security Considerations
Port 1723 (PPTP) is classified as high risk. This port is a common target for automated scanning and brute-force attacks. If you must expose it, restrict access to known IP addresses.
Recommendation: Use firewall rules to whitelist trusted IPs. Enable rate limiting and intrusion detection.