SLES 12 SP5 end support

SLES 12 SP5 ends support on 2024/10/31
After that date, is it possible download packages from server?

After 31 October 2024 I would expect the packages to no longer be publicly available and only available to those with LTSS.

Is that applies to SMT local servers also?

I asked someone at SUSE and so long as you have a valid subscription you should still have access to SLES12 SP5 patches after support ends on 31 October.

If your SMT is registered with SCC (which it would need to get access to SLES patches in the first place) then it should still have those patches but obviously there won’t be new ones after 31 October.