我至 https://grc.com/x/ne.dll?bh0bkyd2 掃了自己的port，結果發現以status 回覆為 stealth ，這問這是什麼意思? 有需要關閉嗎?
thanks.
Port
Service
Status Security Implications
0
<nil>
Stealth There is NO EVIDENCE WHATSOEVER that a port (or even any computer) exists at this IP address!
21
FTP
Stealth There is NO EVIDENCE WHATSOEVER that a port (or even any computer) exists at this IP address!
22
SSH
Stealth There is NO EVIDENCE WHATSOEVER that a port (or even any computer) exists at this IP address!
23
Telnet
Stealth There is NO EVIDENCE WHATSOEVER that a port (or even any computer) exists at this IP address!
25
SMTP
Stealth There is NO EVIDENCE WHATSOEVER that a port (or even any computer) exists at this IP address!
79
Finger
Stealth There is NO EVIDENCE WHATSOEVER that a port (or even any computer) exists at this IP address!
80
HTTP
Stealth There is NO EVIDENCE WHATSOEVER that a port (or even any computer) exists at this IP address!
110
POP3
Stealth There is NO EVIDENCE WHATSOEVER that a port (or even any computer) exists at this IP address!
113
IDENT
Closed Your computer has responded that this port exists but is currently closed to connections.
119
NNTP
Stealth There is NO EVIDENCE WHATSOEVER that a port (or even any computer) exists at this IP address!
135
RPC
Stealth There is NO EVIDENCE WHATSOEVER that a port (or even any computer) exists at this IP address!
139
Net
BIOS
Stealth There is NO EVIDENCE WHATSOEVER that a port (or even any computer) exists at this IP address!
143
IMAP
Stealth There is NO EVIDENCE WHATSOEVER that a port (or even any computer) exists at this IP address!
389
LDAP
Stealth There is NO EVIDENCE WHATSOEVER that a port (or even any computer) exists at this IP address!
443
HTTPS
Stealth There is NO EVIDENCE WHATSOEVER that a port (or even any computer) exists at this IP address!
445
MSFT
DS
Stealth There is NO EVIDENCE WHATSOEVER that a port (or even any computer) exists at this IP address!
1002
ms-ils
Stealth There is NO EVIDENCE WHATSOEVER that a port (or even any computer) exists at this IP address!
1024
DCOM
Stealth There is NO EVIDENCE WHATSOEVER that a port (or even any computer) exists at this IP address!
1025
Host
Stealth There is NO EVIDENCE WHATSOEVER that a port (or even any computer) exists at this IP address!
1026
Host
Stealth There is NO EVIDENCE WHATSOEVER that a port (or even any computer) exists at this IP address!
1027
Host
Stealth There is NO EVIDENCE WHATSOEVER that a port (or even any computer) exists at this IP address!
1028
Host
Stealth There is NO EVIDENCE WHATSOEVER that a port (or even any computer) exists at this IP address!
1029
Host
Stealth There is NO EVIDENCE WHATSOEVER that a port (or even any computer) exists at this IP address!
1030
Host
Stealth There is NO EVIDENCE WHATSOEVER that a port (or even any computer) exists at this IP address!
1720
H.323
Stealth There is NO EVIDENCE WHATSOEVER that a port (or even any computer) exists at this IP address!
5000
UPnP
Stealth There is NO EVIDENCE WHATSOEVER that a port (or even any computer) exists at this IP address!
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