我使用Norton Internet Security 2005

測試一
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You have blocked all of our probes! We still recommend running this test both with
and without Sygate Personal Firewall enabled... so turn it off and try the test again.
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測試二
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TCP "ping" stealthed
TCP NULL stealthed
TCP FIN stealthed
TCP XMAS stealthed
UDP stealthed

Recommendation:

Your computer is invisible to the others on the Internet!
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都過了 XD