netstat command in MacOS
The netstat command in MacOS allows users to display network connections, routing tables, interface statistics, masquerade connections, and multicast memberships. It helps troubleshoot network issues and monitor network activity effectively.
netstat Syntax:
Section titled “netstat Syntax:”netstat [ options ] [ parameters ]MacOS netstat Options:
Section titled “MacOS netstat Options:”| Option | Description |
|---|---|
| -a, —all | Show both listening and non-listening sockets. |
| -t, —tcp | Display TCP protocol sockets. |
| -u, —udp | Display UDP protocol sockets. |
| -i, —interfaces | Show network interfaces. |
| -r, —routing | Display the kernel routing tables. |
| -s, —statistics | Display network statistics. |
| -p, —programs | Show process using sockets. |
| -A family, —address-family=family | Show only sockets of specified address family: inet, inet6, unix. |
| -n, —numeric | Show numerical addresses. |
| -l, —listening | Show only listening sockets. |
| -c, —continuous | Continuously display information. |
| -F form, —fib=filename | Display routing information from file. |
netstat Parameters:
Section titled “netstat Parameters:”| Parameter | Description |
|---|---|
| destination | Display routing information for the specified destination. |
| interface | Display information specific to the given network interface. |
| protocol | Display information for the specified protocol (tcp, udp, etc). |
| host | Display information for the specified host. |
| port | Display information for the specified port. |
How to use netstat command:
Section titled “How to use netstat command:”Display All Listening Ports
Section titled “Display All Listening Ports”netstat -lDisplay a list of all listening ports on the system.
Display Statistics for All Protocols
Section titled “Display Statistics for All Protocols”netstat -sShow statistics for all networking protocols.
Display Kernel Routing Table
Section titled “Display Kernel Routing Table”netstat -rShow the kernel routing table.
Display PID and Program for Each Connection
Section titled “Display PID and Program for Each Connection”netstat -pDisplay the PID and program name for each connection.
Display Network Interface Statistics
Section titled “Display Network Interface Statistics”netstat -iDisplay network interface statistics.
Display Only IPv4 Connections
Section titled “Display Only IPv4 Connections”netstat -4Show only IPv4 connections.
Display Only TCP Connections
Section titled “Display Only TCP Connections”netstat -tShow only TCP connections.
Display All Listening UDP Ports
Section titled “Display All Listening UDP Ports”netstat -uShow all listening UDP ports on the system.
How do I use netstat in MacOS?
Section titled “How do I use netstat in MacOS?”To use the netstat command in MacOS, execute the following command:
netstat --option <value>How can I display active network connections with netstat in MacOS?
Section titled “How can I display active network connections with netstat in MacOS?”To display active network connections in MacOS using netstat, run the following command:
netstat -anHow do I check for listening ports with netstat on MacOS?
Section titled “How do I check for listening ports with netstat on MacOS?”To check for listening ports in MacOS using netstat, use the following command:
netstat -tulnHow to show the PID/Program name along with network connections in MacOS using netstat?
Section titled “How to show the PID/Program name along with network connections in MacOS using netstat?”To display the PID/Program name along with network connections in MacOS using netstat, execute the command below:
netstat -apHow do I filter netstat output by a specific protocol in MacOS?
Section titled “How do I filter netstat output by a specific protocol in MacOS?”To filter netstat output by a specific protocol in MacOS, use the following command:
netstat -t -p tcpHow can I show the routing table in MacOS using netstat?
Section titled “How can I show the routing table in MacOS using netstat?”To display the routing table in MacOS using netstat, run the following command:
netstat -nrHow to display statistics for each protocol using netstat in MacOS?
Section titled “How to display statistics for each protocol using netstat in MacOS?”To display statistics for each protocol in MacOS using netstat, execute the following command:
netstat -sHow do I show both listening and non-listening sockets in MacOS using netstat?
Section titled “How do I show both listening and non-listening sockets in MacOS using netstat?”To show both listening and non-listening sockets in MacOS using netstat, use the following command:
netstat -aHow can I display only the numeric values in the output of netstat on MacOS?
Section titled “How can I display only the numeric values in the output of netstat on MacOS?”To display only numeric values in the output of netstat in MacOS, run the following command:
netstat -nApplications of the netstat command
Section titled “Applications of the netstat command”- Display network connections
- Display routing table information
- Display interface statistics
- Display multicast group information
- Display network protocol statistics