How can i capture all traffic for a specific interface?

[elico]

I have tried to understand the libpcap filters and for now I am using the filter "not port 22" which capture everything not port 22.
How can I capture all traffic?

[vponomarev]

How can I capture all traffic?

You can use any kind of filter, that will always return "true" for all packets.
For example, this filter rule should work:
1>0

Or you can use something like:
(port 22) or (not port 22)

Of course, if you need to see only IP traffic you can use filter:
ip

[elico]

How can I capture all traffic?

You can use any kind of filter, that will always return "true" for all packets.
For example, this filter rule should work:
1>0

Nice one!!!