SSH remote connection not on Ubuntu

Problem Description:

1.ubuntu installed Openssh-server, launched the SSH daemon, using port 22

2. You can ssh 127.0.0.1 connection in this machine

3. Remote via SSH (e.g. with putty or CRT) is not connected

Workaround:

This happens, in all likelihood, because of the firewall, but Ubuntu Firewall is not called iptables, but firewall, and is the use of UFW (is not ubuntu firewall?) command to manage

Viewing usage with UFW--help

Then use UFW disable to disable boot start

　　

[Email protected]:~# UFW status
Status: Active

To action from
- -- --
Samba Allow Anywhere
CUPS Allow Anywhere
Samba (V6) Allow Anywhere (V6)
CUPS (V6) Allow Anywhere (V6)

[Email protected]:~# UFW Disable
Firewall is automatically disabled at system startup
[Email protected]:~# UFW status
Status: Inactive

SSH remote connection not on Ubuntu