[coreboot] What port needs to be open on the Firewall besides coreboot.org:29418

[Bao, Zheng]

Hi, All,
We are building a build machine, which is connect the AMD network with a
firewall. We need to provide the IP address and port(29418) of
coreboot.org to access the git server. It doesn't work yet.

I am wondering if the OpenID needs extra website address and port to
check the authorization.
Does anybody know that?

Thanks

Zheng