Port 1701 is typically used for L2TP (Layer 2 Tunneling Protocol), which is a protocol used to establish a virtual private network (VPN) connection. The port is used for initiating and maintaining the connection between client and server.
Ports those registered with IANA are shown as official ports. The same port number may be unofficialy used by various services or applications. The official usage are listed separately below its usage may change from time to time.
Official
Port |
Protocol (TCP/UDP) |
Title |
Description |
Port Type |
Port 1701 |
tcp |
l2f |
l2f |
REGISTERED PORT |
Port 1701 |
udp |
l2f |
l2f |
REGISTERED PORT |
Port 1701 |
tcp |
l2tp |
l2tp |
REGISTERED PORT |
Port 1701 |
udp |
l2tp |
l2tp |
REGISTERED PORT |
UnOfficial
Unofficialy or sometimes with conflict, the same port may be used by different applications.
Port | Protocol (TCP/UDP) | Description |