OPNsense Forum

English Forums => 25.1, 25.4 Production Series => Topic started by: Conexa on April 25, 2025, 04:49:47 PM

Title: Firewall does not allow IPs to pass through
Post by: Conexa on April 25, 2025, 04:49:47 PM
Hello! I'm facing a problem related to IP distribution. My Opnsense has the DHCP option unchecked, and only my load balance is distributing the IPs. When I let the Internet pass directly from the load balance to the switch, the IPs arrive correctly to the points, but when I send them from my load balance > to my firewall > and from my firewall to the switch, the IPs don't arrive and the computers use the APIPA protocol and are only connected locally.

However, if I distribute fixed IPs, the computers connect without problems.

I wanted the users to continue receiving them via DHCP through the load balance, but it seems that the Firewall is inhibiting this passage, and I can't solve it.

My local configuration is as follows: WAN1,WAN2 --> LOAD BALANCE ---> FIREWALL --> SWITCH --> CLIENT.

If anyone knows the reason and can help me, it would be a great help!
Title: Re: Firewall does not allow IPs to pass through
Post by: Patrick M. Hausen on April 25, 2025, 05:05:09 PM
You need to set up a DHCP relay to have DHCP across routers/firewalls.