If you are running a transparent HTTP proxy on your network, you may have trouble with running Internet Recovery and Apple Hardware Test on Macs that support it. You’ll see a “-4403D” or “-4403F” error. For some reason, Apple’s servers return a 403 when they see the “via” header that many proxy servers send. Here’s the configuration I used in Squid to turn off that header. I also disabled the “forwarded-for” header – essentially, this makes it impossible for servers to determine that the request is coming through a proxy server:
# Be more anonymous forwarded_for transparent via off visible_hostname proxy.local httpd_suppress_version_string on
3 comments
PsyGNUx
Thanks o/ !!
Tak-MK
Thanks a lot for the help! 😀
Alex
forwarded_for transparent
this is the bit missing from the PFsense project. Thanks for your guide!