Casio ISA550WBUN3K9 manual L2TP

Networking	4
Configuring the WAN

Network Addressing	Configuration
Mode
L2TP	Choose this option if you want to use IPsec to connect a L2TP (Layer 2
	Tunneling Protocol) server and encrypt all data transmitted from the client to the
	server. However, it does not encrypt network traffic to other destinations. Use
	the necessary information from your ISP to complete the L2TP configuration:
	• IP Address: Enter the IP address of the WAN port that can be accessible
	from the Internet.
	• Subnet Mask: Enter the subnet mask.
	• Gateway: Enter the IP address of default gateway.
	• User Name: Enter the username that is required to log into the L2TP
	server.
	• Password: Enter the password that is required to log into the L2TP
	server.
	• L2TP Server IP Address: Enter the IP address of the L2TP server.
	• Secret (Optional): L2TP incorporates a simple, optional, CHAP-like tunnel
	authentication system during control connection establishment. Enter the
	secret for tunnel authentication if necessary.
	• Connect Idle Time: Choose this option to let the security appliance
	disconnect from the Internet after a specified period of inactivity (Idle
	Time). This choice is recommended if your ISP fees are based on the time
	that you spend online.
	• Keep alive: Choose this option to keep the connection always on,
	regardless of the level of activity. This choice is recommended if you pay
	a flat fee for your Internet service.
	• MTU: Choose Auto to use the default MTU size, or choose Manual if you
	want to specify another size.
	• MTU Value: If you choose Manual, enter the custom MTU size in bytes.

Cisco ISA500 Series Integrated Security Appliances Administration Guide 129