I need pfSense-Developers-1.2.3 version where is the download pfSense-Developers-1.2.3 version
I also need to,
Do you mean the snapshots? A release is being readied http://forum.pfsense.org/index.php/topic,21079.msg108319.html#msg108319
I think feelnow means the developer's kit for someone who wants to (for example) build an additional driver into the pfSense kernel.
There aren't any, just use a stock FreeBSD 7.2.