Cisco L2TP User Manual

DescriptionRequired Information
IP Address:
Specifies the IP address of the RADIUS authentication
server the source context will communicate with to
provide subscriber authentication functions.
Multiple addresses are needed if multiple RADIUS
servers will be configured.
RADIUS authentication servers are configured within
the source context. Multiple servers can be configured
and each assigned a priority.
RADIUS Authentication server
Shared Secret:
The shared secret is a string between 1 and 15
characters (alpha and/or numeric) that specifies the
key that is exchanged between the RADIUS
authentication server and the source context.
A shared secret is needed for each configured
RADIUS server.
UDP Port Number:
Specifies the port used by the source context and the
RADIUS authentication server for communications.
The UDP port number can be any integer value
between 1 and 65535. The default value is 1812.
L2TP Network Server
6
L2TP Network Server
Source Context Configuration

Cisco L2TP Specifications

General

Category	Server
Authentication	PAP, CHAP, MS-CHAP, MS-CHAPv2, EAP
Type	VPN
Encryption	IPSec
Tunneling	L2TP
Port	UDP 1701
Compatibility	Windows, macOS, Linux, iOS, Android