In our school, we are currently using the ISC dhcp server on a CentOS server, with the BIND DNS server running on the same server. We give the computers in the school static addresses handed out over DHCP, and unknown computers get addresses in a different range.
I would like to migrate both DHCP and DNS over to pfsense as it is far easier to administer than my current python-foo scripts, but I've hit a wall with dhcpd.conf. All of our computers are set to netboot gpxe from our tftp server and then use gpxe to load files from our web server (if you want to know why, see http://cedarandthistle.wordpress.com/2009/10/09/pxe-and-gpxe). The problem is that this requires an if-statement in dhcpd.conf. I can add that using the Edit File menu option in pfsense, but if I add a new computer using the web interface, the if-statement gets wiped. Is there any way to add the following if-statement directly into the web interface in such a way that it won't get removed? if exists user-class and option user-class = "gPXE" { filename "http://lesson.lesbg.com/netboot/pxelinux.0";; } else { if binary-to-ascii(16, 8, ":", substring(hardware, 1, 6)) = "0:19:d1:9a:fe:4b" or binary-to-ascii(16, 8, ":", substring(hardware, 1, 6)) = "0:1e:ec:69:3d:1e" or binary-to-ascii(16, 8, ":", substring(hardware, 1, 6)) = "0:1d:72:9e:9f:e" or binary-to-ascii(16, 8, ":", substring(hardware, 1, 6)) = "0:19:d1:9a:ff:29" { filename "/linux-install/undi.pxe"; } else { filename "/linux-install/gpxe.pxe"; } } Thanks, Jonathan
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