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[ScreenOS] Is DHCP relay supported in NAT mode?



Article ID: KB6078 KB Last Updated: 25 Feb 2019Version: 5.0
Is DHCP relay supported in NAT mode on ScreenOS devices ?
User cannot get a ScreenOS device to function as a DHCP relay agent, when interfaces are in NAT mode.

When the security device functions as a DHCP relay agent, its interfaces must be in Route mode. For interfaces in Route mode, (that is have IP addresses assigned to the interfaces), you must configure a security policy (from zone to zone or intrazone) to permit the predefined service DHCP-Relay before forwarding occurs.

‚ÄĚnote: For more details, refer to the following ScreenOS Concepts & Examples Guide - Fundamentals:
Chapter 4 has details on configuring NAT and Route mode.
Chapter 8 has details on configuring DHCP.
Modification History:
2019/02/21: Content re-reviewed for accuracy.  Related Link added.

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