Smoothwall School Guardian

On School Guardian, you'd implement as follows:

1. in Services > DHCP > DHCP Server, select your subnet and click the advanced button
2. under "TFTP server" enter the IP of your FOG server ("TFTP Server" field = DHCP "nextserver" field)
3. under "Network boot filename" enter the filename on the TFTP server, which AFAICT is pxelinux.0
4. Click save at the bottom of the page. You'll need to restart the DHCP services via Services > DHCP > Global

Thanks: Jerry (techobi)