User's Manual Part 4

Page 54 SonicWALL SonicOS Standard Administrator’s Guide
endpoints of a VPN tunnel to provide additional security, and you can implement it with IPSec to provide
a secure, encrypted VPN solution.
General
Note: You must enable Group VPN before configuring the SonicWALL L2TP feature. Also, the encryption
method and shared secret must match the L2TP client settings.
To enable L2TP Server functionality on the SonicWALL, select Enable L2TP Server. Then click
Configure to display the L2TP Server Configuration window.
L2TP Server Settings
Configure the following settings:
1. Enter the number of seconds in the Keep alive time (secs) field to send special packets to keep the
connection open.
2. Enter the IP address of your first DNS server in the DNS Server 1 field.
3. If you have a second DNS server, enter the IP address in the DNS Server 2 field.