If you decided to run tcpdump in the background using a screen session you can end this session with the following steps.
1) Retrieve the name of the screen with the following command:
1 Socket in /var/run/screen/S-root.
To attach 2) Attach (enter) your session to the screen session run running the following command (Keep in mind the screen session is named 11523..uc-87161439)
- screen -x 11523..uc-87161439
To finish 3) Finish the screen just use with the keys CTRL+C
After that you will be redirected to your SSH session.