Firewall configuration IP po ols
FortiGate-50A Installation and Configuration Guide 161

Adding policies with virtual IPs

Use the following procedure to add a policy that uses a virtual IP to forward packets.
To add a policy with a virtual IP
1Go to Firewall > Policy.
2Select the type of policy that you want to add.
• The source interface must match the inter face selected in the External Interface
list.
• The destination interface must match the interface connected to the network with
the Map to IP address.
3Use the following information to configure the policy.
4Select OK to save the policy.
IP pools
An IP pool (also called a dynamic IP pool) is a range of IP addresses added to a
firewall interface. If you add IP pools to an interface, you can select Dynamic IP Pool
when you configure a policy with the destination set to this interface. You can add an
IP pool if you want to add NAT mode policies that translate source addresses to
addresses randomly selected from the IP pool rather than being limited to the IP
address of the destination interface.
For example, if you add an IP pool to the internal interface, you can select Dynamic IP
pool for Ext->Int policies.
You can add multiple IP pools to any interface but only the first IP pool is used by the
firewall.
This section describes:
•Adding an IP pool
•IP Pools for firewall policies that use fixed ports
•IP pools and dynamic NAT
Source Select the source address from which users can access the server.
Destination Select the virtual IP.
Schedule Select a schedule as required.
Service Select the service that matches the Map to Service that you selected
for the port-forwarding virtual IP.
Action Set action to ACCEPT to accept connections to the internal server.
You can also select DENY to deny access.
NAT Select NAT if the firewall is protecting the private addresses on the
destination network from the source network.
Authentication Optionally select Authentication and select a user group to require
users to authenticate with the firewall before accessing the server
using port forwarding.
Log Traffic
Anti-Virus & Web filter
Select these options to log port-forwarded traffic and apply antivirus
and web filter protection to this traffic.