Chapter 4 Firewall

STEP 5 Click Save/Create.

Click Cancel to return to the Firewall - Schedules page without saving the Schedule.

Delete Days and Times from an Existing Schedule

STEP 1

STEP 2

STEP 3

From the LSM menu, select Firewall > Schedules.

On the Schedules page in the Schedule List table, click the linked Schedule name to access the Edit Schedule page.

In the Schedule table, click the Delete icon next to the schedule entry you want to delete.

Virtual Servers

You can configure an X family device to deploy what is known as a Virtual Server. A Virtual Server allows you to define a private LAN server IP address for each service passing through the firewall. Any external request for a service, directed at the device’s WAN IP address is forwarded to the Virtual Server.

Outgoing sessions from the private server or device to the public network will use the public IP address configured for the Virtual Server. This allows one private IP address to be mapped to one public IP address. If you select all services for the service, this provides one-to-one NAT for devices on the private LAN.

In a one-to-one NAT configuration, the device uses a pool of Internet IP addresses for Network Address Translation. Each internet IP address is associated with one LAN IP address. Effectively, each of these LAN IP addresses has its own public IP address. By using one-to-one NAT you can allow servers on your LAN, which are protected by the device firewall, to be accessed from the Internet without exposing the internal IP addresses of these hosts on your network to the Internet. Individual PCs can appear to have a public IP address if necessary.

After creating a Virtual server, you must configure firewall rules that allow external devices to access internal servers. You can define a private LAN server IP address for each service passing through the firewall. Any external request for a service, directed at the specified Public IP address of the Virtual Server, is forwarded to the Virtual Server.

For additional information, see the following topics:

•“Virtual Servers page” on page 83

•“Configuring Virtual Servers” on page 84

82 X Family LSM User’s Guide V 2.5.1