As we know that the WSUS server will be connecting to Microsoft Update for the purpose of downloading the updates. This process is called as synchronization.

In this process of synchronization, WSUS tells if any of the new updates are available compared to the latest synchromization.

wsus synchrinizing is first time then it willdownload all the latest updates.

WSUS server will be using port number 80 for the hypertext transfer protocol and the port number 443 for secure hyper text transfer protocol inorder to get the updates from the Microsoft.

Assuming corporate firewall is in between our companys network and the Internet, then we should open those above ports on the server inorder to maintain communication to Microsoft Update.

If you configure WSUS on the default Web site, then the WSUS do the process of Automatic Updates on port number 80.

The main advantage of wsus are listed as fallowes.

centralized updation management.

Automating the process of updation.

'It additionally adds SHA256 hash capability for security pupose

it also divides the server and client

there are few server hardware recquirement before installing the wsus .

After installing the recquired software restart the server before we start.

we should also install Microsoft .NET Framework 4.0.