Como conectar o Ubuntu 16 na porta 80

Question

Estou usando o Ubuntu 16.04 como servidor.

my@wwwui:~$ cat /etc/lsb-release 
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=16.04
DISTRIB_CODENAME=xenial
DISTRIB_DESCRIPTION="Ubuntu 16.04.1 LTS"

A porta é aberta assim.

my@wwwui:~$ sudo ufw status
Status: active

To                         Action      From
--                         ------      ----
80                         ALLOW       Anywhere                  
22                         ALLOW       Anywhere                  
80 (v6)                    ALLOW       Anywhere (v6)             
22 (v6)                    ALLOW       Anywhere (v6)  

e o apache está corretamente iniciado e obtém index.html.

my@wwwui:~$ wget localhost
--2017-08-11 22:13:29--  http://localhost/
Resolving localhost (localhost)... 127.0.0.1, ::1
Connecting to localhost (localhost)|127.0.0.1|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 11321 (11K) [text/html]
Saving to: ‘index.html.1’

index.html.1                                  100%[=================================================================================================>]  11.06K  --.-KB/s    in 0s      

2017-08-11 22:13:29 (175 MB/s) - ‘index.html.1’ saved [11321/11321]

No entanto, o telnet é recusado no meu computador local.

mylocal$ telnet jp.mine.jp 80
Trying 133.242.***.***...
telnet: connect to address 133.242.***.***: Connection refused
telnet: Unable to connect to remote host

Existe algum lugar para verificar ???