[megalodon]

I regularly check my ports by going to the following link and clicking "All Service Ports":
http://www.grc.com/x/ne.dll?rh1dkyd2

I always pass the Stealth Test but today I found that it failed with the results copied below. I use NIS2007 and never changed any firewall setting or any other config. Does this pose a security threat? If so, how to fix it? Thanks

Results from scan of ports: 0-1055

0 Ports Open
2 Ports Closed
1054 Ports Stealth
---------------------
1056 Ports Tested

NO PORTS were found to be OPEN.

Ports found to be CLOSED were: 1048, 1052

Other than what is listed above, all ports are STEALTH.

TruStealth: FAILED - NOT all tested ports were STEALTH,
- NO unsolicited packets were received,
- NO Ping reply (ICMP Echo) was received.