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How exactly does ping -a resolve the host name? This is called reverse DNS. Forward DNS resolves names into IP addresses. Reverse DNS resolves IP addresses into names. When you type ping -a into your computer, it issues the DNS query PTR PTR stands for pointer record. Why is everything except 'ping -a' work ...


The bit about having remote users contact Windows Update might require a bit of effort, depending on how your VPN is set up, but the rest is very possible. It's pretty easy to use GPOs to assign different WSUS servers to client at different AD sites, and AD sites are defined by subnet. So assuming that's all configured properly, this is a fairly simple ...

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