how Wsus work ? and how the clients are updated automatically?
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Answer Posted / pratik
WSUS is very uselful tool , to manage centralised patching from one server.
It includes all patches :- Crtitical, Important etc.
WSUS server uses port 443 for HTTPS protocol.
If the above is blocked then you need to allows below urls to obtain updates.
http://windowsupdate.microsoft.com
http://*.windowsupdate.microsoft.com
https://*.windowsupdate.microsoft.com
http://*.update.microsoft.com
https://*.update.microsoft.com
http://*.windowsupdate.com
http://download.windowsupdate.com
http://download.microsoft.com
http://*.download.windowsupdate.com
http://wustat.windows.com
http://ntservicepack.microsoft.com
On WSUS 3.2 and earlier, port 80 for HTTP and 443 for HTTPS
On WSUS 6.2 and later (at least Windows Server 2012), port 8530 for HTTP and 8531 for HTTPS
he firewall on the WSUS server must be configured to allow inbound traffic on these ports.
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