Cisco Systems ISA550

Networking

Configuring the WAN

Cisco ISA500 Series Integrated Security Appliances Administration Guide 126

Static IP Choose this option if the ISP provides you with a static (permanent) IP address

and does not assign it dynamically. Use the corresponding information from your

ISP to complete the following fields:

•IP Address: Enter the IP address of the WAN port that can be accessible

from the Internet.

•Subnet Mask: Enter the IP address of the subnet mask.

•Gateway: Enter the IP address of default gateway.

•MTU: The Maximum Transmission Unit is the size, in bytes, of the largest

packet that can be passed on. 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.

Network Addressing

Mode

Configuration