Implement tcpdump
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	seguridad_tic
	Dec 14 2018, 9:38 AM

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Hi:

It'd be very very useful if you can implement tcpdump in VyOS. We'd be very happy if you can do it.

Thanks in advanced
Regards

seguridad_tic triaged this task as Normal priority.Dec 14 2018, 9:38 AM

seguridad_tic created this task.

tcpdump is available in VyOS for long time.

You can use tcpdump directly ('sudo' to change to linux bash):

sudo tcpdump

Or use VyOS command (example with a basic filter):

monitor traffic interface eth0 filter "host 10.0.1.1"

Thanks a lot for your response. I just tested and yes, there it is :)

The 'command traffic' command seems not to exist:

vyos@vyos:~$ monitor traffic interface eth3 filter "host 1.1.1.1"

Invalid command: monitor [traffic]

Thanks again!

On which version of VyOS you are? In older versions the syntax was different:

monitor interfaces ethernet eth0 traffic

We got 1.1.7. Yes, the command you said is OK.

Thanks a lot.