Which of the following command is used to view iptables logs on Ubuntu and Debian...

In Ubuntu and Debian distributions, the command to view iptables logs is $ tailf /var/log/kern.log. This command allows you to follow the end of the kernel log file in real-time. It is useful for monitoring the logs as they are updated. The tailf command is similar to tail -f, and it displays the last ten lines of the file by default and then outputs appended data as the file grows.