Sonic Wall Warns of Intruder - emule, but Norton Security sees nothing

Norton Security | Norton Internet Security
1

I am receiving notices from my Sonic Wall firewall,

Alert - Intrusion Prevention -      IPS Prevention Alert: P2P eMule -- Obfuscated Protocol, SID: 4, Priority: Low -, 

identifying my computer's IP address attempting to connect to ....twttr.com

 

I have scanned the computer with Power Eraser, but it finds nothing. 

 

Is this a real problem, or is one of my legitimate programs trying to communicate?

2

I am receiving notices from my Sonic Wall firewall,

Alert - Intrusion Prevention -      IPS Prevention Alert: P2P eMule -- Obfuscated Protocol, SID: 4, Priority: Low -, 

identifying my computer's IP address attempting to connect to ....twttr.com

 

I have scanned the computer with Power Eraser, but it finds nothing. 

 

Is this a real problem, or is one of my legitimate programs trying to communicate?

3

Thanks - but the Sonic Wall is an industrial-grade hardware firewall that reports on all network activity.