How to configure hosts on the LAN to obtain IP address from a DHCP server on the WAN (DHCP Pass-through) with SonicWall LAN and WAN in Layer-2 Bridged mode.
In this scenario based article, the SonicWall X1 (WAN) and X0 (LAN) are in bridged mode with a DHCP Server on the WAN side of the SonicWall. This article describes how to allow the hosts on the X0 (LAN) to obtain IP address from the DHCP Server on the WAN side of the SonicWall.
SonicWall X1 (WAN) & X0 (LAN) bridged IP address: 192.168.170.51
DHCP Server IP address on the WAN side of the SonicWall : 192.168.170.2
Login to the SonicWall management interface.
Navigate to the Network > Address Objects page.
Create the following Address Object for the DHCP Server
Navigate to the Fireall > Access Rules page.
Create the following access rule under WAN > LAN
How to Test:
Set a host behind the SonicWall LAN to obtain IP address automatically. Do an ipconfig/release & ipconfig/renew.