Hello community,
I want to capture traffic to internet with capture filter.
For that I use a VLAN on a cisco switch with port mirror to the vlan, existing of only two ports.
One port for ethernet output of a dsl-modem, one port to ethernet inferface o the internet router.
When I start capturing I see all packets an can set a display filter which works.
Stopping capturing and setting a capture filter, like port 5050, no more packet are captured.
No tested capture filter will work.
What is wrong?
Thanks for any help
Michael
