Putty Login error through SSH (Network error: Connenction timeout)

• For Such Problem their may be more than different issue so the following troubleshooting methods must work properly.
  1. Ping the respected server ip to verify whether the server is reachable or not.
  2. If Ping is fine then telnet on respective IP with corresponding port no. Here the default ssh port is 22. If telnet is also fine then go to step 3 otherwise open the respective port through firewall setting.
  3. Edit the sshd_config file with sudo privilege and uncomment PermitRootLogin yes line and save it with your favorite editor as shown in below screen shot and try  again.
     
     
     4. Congrats You can now able to ssh to your respective server.