Customer had 'SSL required' set in IIS. PXE didn't work and iPXE doesn't respond. A 403 error
was found in the SBS server logs
DS 8.x
GSS 3.x
All versions of DS and GSS where ipxe is implemented
The services folder under the deployment website was set to 'require SSL'
Open IIS and go to '[NSserver]\Sites\Default Web Site\Altiris\Deployment\Services' . Open up 'SSL Settings'. Uncheck 'Require SSL'. and click apply.