EXAMINE THE FOLLOWING SNORT RULE, DESIGNED TO DETECT ATTEMPTS BY AN ORGANIZATION’S EMPLOYEES TO ACCESS A GAMBLING WEBSITE IN VIOLATION OF ACCEPTABLE USE POLICY.
Examine the following Snort rule, designed to detect attempts by an organization’s employees to access a gambling website in violation of acceptable use policy. This rule is syntactically valid and will produce alerts when a user visits the Powerball lottery website with a web browser. With an eye towards minimizing false positives, identify five ways the rule could be improved to more specifically target employees accessing the Powerball website.
alert ip any any -> $EXTERNAL_NET any (msg:”Acceptable use violation – Gambling – Powerball”; flow:stateless; content:”powerball”; nocase; sid:3333333; rev:1;)