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Networking
Configuring the WAN
Cisco ISA500 Series Integrated Security Appliances Administration Guide 126
4
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