Changing SSH Port

Default port of SSH is 22, but for certain reasons such as safety then we can change that port.

 Open terminal as root, type :

nano /etc/ssh/sshd_config

look for the following line:

# Package generated configuration file

# See the sshd_config(5) manpage for details

# What ports, IPs and protocols we listen for

Port 22

# Use these options to restrict which interfaces/protocols sshd will bind to

#ListenAddress ::

#ListenAddress 0.0.0.0

…...................................

then we change the port 22 corresponding port we want.

# Package generated configuration file

# See the sshd_config(5) manpage for details

# What ports, IPs and protocols we listen for

Port 23

# Use these options to restrict which interfaces/protocols sshd will bind to

#ListenAddress ::

#ListenAddress 0.0.0.0

…...................................

or can we add multiple ports 

# Package generated configuration file

# See the sshd_config(5) manpage for details

# What ports, IPs and protocols we listen for

Port 22

Port 23

Port 1000

Port 1001

# Use these options to restrict which interfaces/protocols sshd will bind to

#ListenAddress ::

#ListenAddress 0.0.0.0

 ...........................

save and exit by pressing Ctrl+X.

Try port connection.

run putty.exe on the client PC

in the Ports tab, enter the port that we have a fox earlier.