What firewall ports are needed for Windows Copy?

[evgeniosc]

What ports are needed to be opened on a firewall to allow usage of windows xcopy command between two machines that are firewalled?

 

[Piloria]

The xcopy command uses
TCP 445 microsoft-ds

but you may need some extra ports if you have to authenticate
udp 137 nbname
udp 138 nbdatagram
udp 53 domain-udp
udp 88 kerberos_v5_UDP

best way to check
open up port 445 then look at the logs and see what other ports it is trying to open.
Some of these requests may go to the domain controller for authentication.

 

[evgeniosc]

I copied files from one machine to the other and used netstat to see the active connections.

It showed that only port 139 was used (netbios-ssn).