1701
L2TP
Low RiskUDP — Security & VPN
Port Overview
Port Number
1701
Service Name
L2TP
Transport Protocol
UDP
Category
Security & VPN
Security Risk
Low
Port Range
Registered (1024-49151)
What is Port 1701?
Port 1701 is the standard port for Layer 2 Tunneling Protocol (L2TP), used to create VPN tunnels. L2TP itself provides no encryption and is typically combined with IPSec to form L2TP/IPSec VPN connections. It is built into Windows, macOS, iOS, and Android for VPN connectivity.
UDP
Security & VPN
Commonly Used
Security Considerations
Port 1701 (L2TP) is classified as low risk. This service uses encryption or has a minimal attack surface, making it relatively safe to expose.
Recommendation: Standard security practices apply. Keep software updated and monitor access.