You just set up a security system in your network. In what kind of system would you find the following string of characters used as a rule within its configuration? alert tcp any any $->192\mathrm{.}168\mathrm{.}100\mathrm{.}0/2421($msg:$$FTP on the network!$$;$)$

Group of answer choices

An Intrusion Detection System

FTP Server rule

A firewall IPTable

A Router IPTable