Ssh:connect to host IPAddr Port 22:connection timed out on Ubuntu

You can check it in the following ways

1 Vi/etc/ssh/sshd_config:
Then remove the annotation numbers from these two items
Port 22
Protocol 2

2

Check the SSHD service

sudo service SSH status.

3

Check if the name is consistent

/etc/hostname, And/etc/hosts.

4

Check the firewall.

sudo service UFW status

5

View TCP port 22
zhaoxiaowei@beigang:~$ Netstat-nat | Grep:22
TCP 0 0 0.0.0.0:22 0.0.0.0:* LISTEN
TCP 0 IPADDR.197:22 221.123.129.155:54465 established
TCP 0 0 ipaddr.197:22 221.123.129.155:1259 established
TCP 0 0 ipaddr.197:22 192.126.120.8:54340 established
TCP 0 0 ipaddr 61.197:22 221.123.129.155:54109 established
TCP 0 0 ipaddr 61.197:22 221.123.129.155:53899 established
TCP6 0 0:: £ º::*

LISTEN

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