Internet Connection Security for Windows Users

LeakTest - FirewallTester

http://www.grc.com/lt/leaktest.htm

Port Authority Edition - Internet Vulnerability Profiling

https://www.grc.com/x/ne.dll?bh0bkyd2 www.grc.com

Hinweis:
Falls eine Fehlermeldung angezeigt wird (ungültiges Sicherheitszertifikat), sollte "Ausnahme" gewählt werden, um auf die Seite zu gelangen.

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

Beispiel:

Unable to connect with NetBIOS to your computer.
All attempts to get any information from your computer have FAILED. (This is very uncommon for a Windows networking-based PC.) Relative to vulnerabilities from Windows networking, this computer appears to be VERY SECURE since it is NOT exposing ANY of its internal NetBIOS networking protocol over the Internet.


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