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Port 138 SMB & Dynamic Ports 49181 & 49182

Posted: Thu Jun 21, 2018 7:54 pm
by LLCoolJ94
While running the Log Visualizer I noticed that my firewall blocked several incoming connection attempts from:

Port 138

I know that macOS uses this port for NETBIOS, however, I am wondering if receiving several attempts (4 or 5) for an inbound connection within about 30 minutes is normal? I have no reason to share a drive with the internet, so I am not sure what is trying to communicate with my machine.

I also noticed I'm blocking an inbound connection from:

Port 49181
Dynamic Ports

Port 49182
Dynamic Ports

Using the query function I found that these traces back to Apple.

Any thoughts?