IP Helper Between 2 LAN's
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I have two LAN's and each has it's own DHCP server. The two networks are separated by two firewalls and I have never had a need to place a connection between the two until now. LAN 1 is a Sonicwall TZ670 (192.168.50.0/23) and LAN 2 is a Cisco RV340 (172.16.0.0/24) and I now need to place devices from LAN2 on LAN1. I'm assuming I'll need to implement VLAN's for LAN1 and LAN2 and I'm also assuming that I will need to use IP Helper to setup a DHCP Relay Agent on the Sonicwall. However, is there more to it than that or am I missing something?
Best Answer
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Arkwright All-Knowing Sage ✭✭✭✭
If there is already a DHCP server in each network, then what is the helper going to be doing?
Your "real" question seems to be, how can I connect the two networks together? I think you need to take a spare interface on each firewall, connect them together, configure a network between them for routing and create a static route on each firewall pointed at the other firewall's IP in the routing network. Create access rules to suit the level of access you desire.
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