Using an Ubuntu Linux machine in the Linux lab, create a bash shell script to block IP addresses of ssh attackers. Your script should analyze the sample authentication log file and create a syslog entry for each IP address with more than $10$ invalid login attempts. Your script should also create an IP tables firewall rule to block each IP address with more than $10$ invalid login attempts.

$***$ The sample authentication log may be downloaded from the "Final project" assignment on Canvas.

After testing your "block" script, create a cron job to run your "block" script every $15$ minutes of every day.

Next, create a second bash shell script to reset the IP tables firewall. The purpose of the second script is to remove all the blocked IP addresses by restoring the basic IP tables firewall.

Finally, create a cron job to run your "reset" script at $11$:$59$ p$.$m$.$ every Sunday.

Copy and paste the following items into a document and upload the file to the "Final project" assignment on Canvas.

Your "block" bash shell script

A long directory listing showing your "block" script filename and permissions

The line added to the cron job configuration file to run your "block" script

An IP tables verbose listing showing at least one block rule added by your "block" script

A tail of syslog showing at least one log entry added by your "block" script

Your "reset" bash shell script

A long directory listing showing your "reset" script filename and permissions

The line added to the cron job configuration file to run your "reset" script

Use the following rules for your "basic" IP tables firewall.