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Problem

If more than one PC is downloading a big Windows Update or Software Package, the WAN connection will be overloaded.

Solution

Setup a Cachine Proxy


Setup of Squid as Caching Proxy

  • Install on a NAS like QNAP, Synologie or a Linux VM
  • Don't use the build in Squid Proxy from the NAS since you need special caching settings


Squid config

https://wiki.squid-cache.org/SquidFaq/WindowsUpdate

range_offset_limit 200 MB windowsupdate
maximum_object_size 200 MB
quick_abort_min -1
refresh_pattern -i microsoft.com/.*\.(cab|exe|ms[i|u|f]|[ap]sf|wm[v|a]|dat|zip) 4320 80% 43200 reload-into-ims
refresh_pattern -i windowsupdate.com/.*\.(cab|exe|ms[i|u|f]|[ap]sf|wm[v|a]|dat|zip) 4320 80% 43200 reload-into-ims
refresh_pattern -i windows.com/.*\.(cab|exe|ms[i|u|f]|[ap]sf|wm[v|a]|dat|zip) 4320 80% 43200 reload-into-ims




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