What ports need to be allowed through firewall in order to access a remote machine via UNC file share?
Our TCOM team recently rolled out a new firewall which broke UNC access with machines on our internal network trying to access servers in our DMZ via UNC. I was going to send a request to have these ports opened back up for a limited number of machines, but I can't seem to find a solid answer that tells me which ports are needed. Do I need to allow ports 137, 138, 139, 445? All of them, or only some of them? Only from source to destination or both ways? Thanks!
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