Last edited 5 years ago

Netstat

1. Article purpose[edit source]

This article provides the basic information needed to start using the Linux tool: netstat [1].

2. Introduction[edit source]

The following table provides a brief description of the tool, as well as its availability depending on the software packages:

Yes: this tool is either present (ready to use or to be activated), or can be integrated and activated on the software package.

No: this tool is not present and cannot be integrated, or it is present but cannot be activated on the software package.

Tool STM32MPU Embedded Software distribution STM32MPU Embedded Softwaredistribution for Android™
Warning white.png Warning
The STM32MPU distribution for Android™ is not yet available in the v3 ecosystem releases: refer to the Netstat page for the v2 ecosystem releases (in archived wiki).
Name Category Purpose Starter Package Developer Package Distribution Package Starter Package Developer Package Distribution Package
netstat Monitoring tools netstat[1] prints network connections, routing tables, interface statistics, masquerade connections, and multicast membership information. Yes Yes Yes Yes Yes Yes

3. Installing the trace and debug tool on your target board[edit source]

3.1. Using the STM32MPU Embedded Software distribution[edit source]

netstat is installed by default and ready to be used with all STM32MPU Embedded Software Packages.

It comes through the busybox:

 which netstat | xargs ls -la
/bin/netstat -> /bin/busybox.nosuid

3.2. Using the STM32MPU Embedded Software distribution for Android™[edit source]

netstat is installed by default and ready to be used with all STM32MPU Embedded Software Packages for Android™.

It comes with the toybox:

 which netstat | xargs ls -la
/system/bin/netstat -> toybox

4. Getting started[edit source]

Here are basic commands to start with netstat:

  • Display kernel routing information
 netstat -rn
Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface
0.0.0.0         10.99.3.254     0.0.0.0         UG        0 0          0 eth0
10.99.0.0       0.0.0.0         255.255.252.0   U         0 0          0 eth0
10.99.3.254     0.0.0.0         255.255.255.255 UH        0 0          0 eth0
  • List out listening-only connections
 netstat -tnl
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       
tcp        0      0 0.0.0.0:19999           0.0.0.0:*               LISTEN      
tcp        0      0 0.0.0.0:5355            0.0.0.0:*               LISTEN      
tcp        0      0 10.99.1.237:53          0.0.0.0:*               LISTEN      
tcp        0      0 127.0.0.1:53            0.0.0.0:*               LISTEN      
tcp        0      0 127.0.0.1:953           0.0.0.0:*               LISTEN      
tcp        0      0 0.0.0.0:1534            0.0.0.0:*               LISTEN      
tcp        0      0 :::19999                :::*                    LISTEN      
tcp        0      0 :::5355                 :::*                    LISTEN      
tcp        0      0 :::53                   :::*                    LISTEN      
tcp        0      0 :::22                   :::*                    LISTEN

5. To go further[edit source]

Additional documentation is available on Internet about netstat. See References.

Refer to Linux® man page[1] for more details on command options.

6. References[edit source]


  • Useful external links
Document link Document Type Description
netstat (wikipedia.org) Standard wikipedia.org
netstat examples User Guide binarytides.com
netstat main commands User Guide geekflare.com