Cisco Systems ISA550

Networking

Configuring the WAN

Cisco ISA500 Series Integrated Security Appliances Administration Guide 123

•Configure the primary WAN, page123

•Configure a secondary WAN, page 125

Release or renew a DHCP WAN connection

If a WAN interface is configured to obtain an IP address from the ISP by using

Dynamic Host Configuration Protocol (DHCP), you can click the Release icon to

release its IP address, or click the Renew icon to obtain a new IP address.

Configure the primary WAN

To configure the settings for the primary WAN (WAN1), click the Edit (pencil) icon.

Then use the WAN - Add/Edit page to configure the connection. If you enabled

IPv4/IPv6 routing mode, complete both tabbed pages. Click OK to save yo ur

settings. Click Save to apply your settings to the security appliance.

For IPv4 routing mode, enter the following information on the IPv4 tab:

•Physical Port: The physical port ass ociated with the primary WAN.

•WAN Nam e: The name of the primary WAN (WAN1).

•IP Address Assignment: Depending on the requirements of your ISP,

choose the network addressing mode and complete the corresponding

settings. The security appliance supports DHCP Client , Static IP, PPPoE,

PPTP, and L2TP. For information on configuring network addressing mode,

see Network Addressing Mode, page 125.

•DNS Server Source: DNS servers map Internet domain names to IP

addresses. You can get DNS server addresses automatically from your ISP

or use ISP-specified addresses.

-Get Dynamically from ISP: Choose this option if you have not been

assigned a static DNS IP address.

-Use these DNS Servers: Ch oo se thi s op ti on i f yo u h ave as sig ne d a s tat ic

DNS IP address. Also enter the addresses in the DNS1 and DNS2 fields.

•MAC Address Source: Specify the MAC address for the primary WAN.

Typically, you can use the unique 48-bit local Ethernet address of the

security appliance as your MAC address source.

-Use Default MAC Address: Choose this option to use the default MAC

address.