Port Authority
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Port Authority Edition , Internet Vulnerability Profilinghttps://www.grc.com/x/ne.dll?bh0bkyd2 www.grc.com 1.) Klicke--> Proceed 2.) All Service Ports 
open --> geöffnet (möglicher Backdoor oder Trojaner) closed --> geschlossen (aber sichtbar..nicht zu empfehlen) stealth --> geschlossen + unsichtbar (zu empfehlen) 3.) File Sharing + NetBois (offene Ports überprüfen) File Sharing 
4.) Checking the Most Common and Troublesome Internet Ports Common Ports 
Beispiel:
GRC Port Authority Report created on UTC: 2005-12-29 at 21:58:09 Results from scan of ports: 0, 21-23, 25, 79, 80, 110, 113, 119, 135, 139, 143, 389, 443, 445, 1002, 1024-1030, 1720, 5000 1 Ports Open 13 Ports Closed 12 Ports Stealth --------------------- 26 Ports Tested The port found to be OPEN was: 445 Ports found to be STEALTH were: 0, 21, 22, 23, 25, 79, 80, 110, 113, 119, 135, 139 |
