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Example: Assigning TCP/IP Settings for Hosts Using DHCP (NSM Procedure)


The Dynamic Host Configuration Protocol (DHCP) automatically assigns TCP/IP settings for the hosts on the network. Different security devices support different DHCP roles:

  • DHCP clients receive a dynamically assigned IP address.

  • DHCP servers allocate dynamic IP addresses to clients.

  • DHCP relay agents receive information from a DHCP server and relay that information to clients.

Some devices can simultaneously act as a DHCP client, server, and relay agent.

To assign TCP/IP settings to hosts using DHCP:

  1. In the NSM navigation tree, select Device Manager > Devices.

  2. Select a security device and then double-click the device on which you want to define forced timeout. The device configuration appears.

  3. In the device navigation tree, select Network > Interface.

  4. Double-click a trust interface. The General Properties screen appears.

  5. Select DHCP in the navigation tree, and for the DHCP Mode, select Server.

  6. Configure the server settings as follows:

    • For DHCP Server Auto Processing, select Enable DHCP Server.

    • For DNS #1, #2, and #3, enter

    • For Domain Name, enter

    • For Client Gateway, enter

    • For Lease Time (Minutes), the default is 4320 minutes.

    • For Netmask, the default is 0.

    • For NetInfo Server #1 and Server #2, enter

    • For POP3, enter

    • For SMTP, enter

    • For WINS#1 and WINS#2, enter

    • Select Enable Next Server IP.

    • Click OK to apply the settings.