Examine the following command:

iptables $-$A FORWARD $-$m string $--$algo kmp $--$hex$-$string $\text{'}|0$a $636962636$f $6$e $6$c $696$e $65046369626303636$f $6$d$|\text{'}-$j DROP

Explain the command above. What is its purpose, and how would you use it$?$

What other commands or configurations would you use in conjunction with this and what specific type of attack does this represent?

What can you potentially achieve with this when combined with other attack techniques? Discuss these techniques. How could the objective of the specific command above be thwarted and what limitations are there? Explain in detail.