Intrusion Subseven Scan after Online Norton Security Scan: Normal?

Good morning!

I realized that everytime I run the Online Norton Security Scan, my router's event log indicates an intrusion SubSeven scan. The source IP is 67.134.208.132.


This is a dumb question, but what's the exact meaning of this? I assume that my router is telling me that Norton Security Scan checked for vulnerabilities to an intrusion made by Subseven. Is that correct?


The Norton Security Scan results told me that my system is safe and all my ports are stealth, so I believe that this "intrusion SubSeven scan" is a normal event and doesn't mean nothing bad or that  I'm vulnerable to this thing, right?

I'm not very into these things, so I thank you in advance for your answers ;)