Write a function, find$\_$vulnerable$\_$machines, that searches for machines in the

$10\mathrm{.}13\mathrm{.}4\mathrm{.}0/24$ subnet and outputs two files, open$\_$ssh$.$log and open$\_$telnet.log$.$ These files should contain a list of IPs that correspond to machines that have open ssh and open telnet ports, respectively.

This function will probably take $10-20$ minutes to run in its entirety over the whole list of subnet IPs, but you can test your port$-$checking logic on two known IPs before having your script loop over all the IPs in the subnet. For testing SSH$,$ your VM IP has an open SSH port. For testing telnet, $10\mathrm{.}13\mathrm{.}4\mathrm{.}4$ has an open telnet port