我添加了一條SSH規則，用於通過gufw在我的發行版中添加4444端口，但是當我運行
nmap -sV 10.9.0.136 -A
顯示：
Starting Nmap 7.40 ( https://nmap.org ) at 2017-04-25 11:30 IST
Nmap scan report for 10.9.0.136
Host is up (0.00013s latency).
All 1000 scanned ports on 10.9.0.136 are closed
Too many fingerprints match this host to give specific OS details
Network Distance: 0 hops
OS and Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 3.50 seconds
我在做什麼錯了？
