Problem: What does *:* mean in netstat -an example: UDP 0.0.0.0:12345 *:*

Problem: What does *:* mean in netstat -an example: UDP 0.0.0.0:12345 *:*

What does *:* mean in netstat -an    example:   UDP    0.0.0.0:12345           *:*


 

Solution: What does *:* mean in netstat -an    example:   UDP    0.0.0.0:12345           *:*

It denotes the TCP or UDP port of the connection.

In your example, it would mean that some program listens on all your interfaces for incoming UDP connections on port 12345