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Firewall usage with SnapMirror

SnapMirror uses the typical socket/bind/listen/accept sequence on a TCP socket.

SnapMirror source binds on port 10566. The destination storage system contacts the SnapMirror source storage system at port 10566 using any of the available ports assigned by the system. The firewall must allow requests to this port of the SnapMirror source storage system.

Synchronous SnapMirror requires additional TCP ports to be open. The source storage system listens on TCP ports 10566 and 10569. The destination storage system listens on TCP ports 10565, 10567, and 10568. Therefore, you should ensure that the firewall allows a range of TCP ports from 10565 to 10569.