Navigate to System → Settings → Administration and change the TCP port field to something other than 80 or 443. Then, also check the HTTP Redirect field to disable web GUI redirect rule.
Services:
ISC DHCPv4 → Interface → Enable DHCP server, specify range (x.x.x.100 to 199)
Backup
System → Configuration → Backups
Setting Up PXE Boot with TFTP on OPNsense
1. Install and Enable the TFTP Service
Go to System > Firmware > Plugins in OPNsense.
Search for `os-tftp` and install it.
Navigate to Services > TFTP > General, enable TFTP, and set the server IP.
2. Configure DHCP for PXE Boot
Go to Services > DHCPv4 > [LAN].
Enable Network Booting and set:
Next-server IP (the TFTP server, usually OPNsense itself).
Boot filename (`pxelinux.0` for BIOS, `bootx64.efi` for UEFI).
3. Prepare the TFTP Server
Upload PXE boot files to `/usr/local/tftp`.
Ensure the correct bootloader (`pxelinux.0` or UEFI equivalents) is available.
4. Test the Configuration
Boot a PXE-capable client.
Verify it retrieves the bootloader from the TFTP server.