Done an online firewall test and I get this:GRC Port Authority Report created on UTC: 2016-10-23 at 01:26:56Results from scan of ports: 0-1055 0 Ports Open 8 Ports Closed 1048 Ports Stealth--------------------- 1056 Ports TestedNO PORTS were found to be OPEN.Ports found to be CLOSED were: 21, 22, 23, 80, 137, 138, 139, 445Other than what is listed above, all ports are STEALTH.TruStealth: FAILED - NOT all tested ports were STEALTH, - NO unsolicited packets were received, - A PING REPLY (ICMP Echo) WAS RECEIVED.So how do I stealth the ports that are closed?
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