Solve the problem that the ssh connection is denied after the Linux server IP address is changed.

After the Linux server IP address is changed, the ssh connection is rejected. after The Linux server IP address is changed, the ssh: connecttohostxxxport22: Connectionrefused error is reported during ssh logon because the sshd service on the server has been normal, however, after the IP address is changed, putty is used...
After the Linux server IP address is changed, the ssh connection is rejected. after the IP address of the Linux server is changed, the "ssh: connect to host xxx port 22: connection refused "error because the sshd service on the server has been normal, but after the IP address is changed, the user logs on through putty and reports" Connection denied "exception 1. restart the sshd service to check whether the logon is normal, if an exception persists, perform the following steps: www.2cto.com netstat sshd. the IP address in the ssh/known_hosts file is correctly modified. 1. vi ~ /. Ssh/known_hosts 2. replace all old IP addresses with the new IP address % s/old IP address/new IP address/g.