Why are these automatically generated

[jtpsportnews]

Hello, everybody

I don't understand. I can't figure out why these firewall rules were automatically generated or what they would be used for on a typical home network. I'm still learning OPNsense in a VM environment as I'm considering replacing my Sophos XG setup with it.

I have a clean install of OPNsense with just a few minor adjustments (IPS enabled, Web Proxy w/ ClamAV, etc.). OPNsense is also running a DHCP server for IPv4 (no DHCP server for IPv6). I noticed in the WAN firewall rules, there are several automatically generated rules (see attached screenshot).
I don't understand what these rules are for:
- allow dhcpv6 client in WAN (3 of them)
- allow DHCP client on WAN (2 of them)

On the LAN firewall rules, there are three automatically generated rules for "allow access to DHCP server" but that makes sense - those are such that clients on my LAN can access the DHCP server. However, I don't understand why there are rules on the WAN side. UFABET1688

Any suggestion would be greatly appreciate. Thank in advance.

[banym]

Sorry, can't see the attachment.

[franco]

I'm guessing automatic DHCP rules in IPv4 and IPv6 are needed when your WAN is set to DHCPv4 and DHCPv6 for it to acquire an address.


Cheers,
Franco