How to connect to a Linux server using SSH?
How to connect to a Linux server using SSH?
Overview
Secure Shell (SSH) is a UNIX-based command interface and protocol for securely getting access to a remote computer. SSH is actually a suite of three utilities slogin, ssh, and scp that are secure versions of the earlier UNIX utilities, rlogin, rsh, and rcp. SSH commands are encrypted and secured in several ways. Both ends of the client/server connection are authenticated using a digital certificate, and passwords are protected by being encrypted.
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Initiate a SSH connection to the server
First, you need to choose a SSH client.
1. Mac OS X includes the SSH client Terminal by default. Go to Application > Utilities > Terminal
Run below command to connect to your linux server via SSH (port 22):
[root@client ~]# ssh root@example.domain.com -p22 The authenticity of host 'example.domain.com (192.168.2.155)' can't be established. RSA key fingerprint is 45:83:45:4a:e3:29:7e:fa:f3:c3:7d:64:ea:3a:6f:58. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added 'example.domain.com,192.168.2.155' (RSA) to the list of known hosts. root@example.domain.com's password:
2. Windows-based Operating Systems do not come with an SSH client by default. You can use PuTTY that can be downloaded from here.
- Once you download Putty.exe to your windows machine, double click the putty.exe file
- Enter your connection settings. Host Name or server IP address, Port, and Connection Type(Leave it as default : SSH ). Then, Click Open to initiate the SSH connection.
- If this is your first time connecting to the server from this computer, you will see the following output. Accept the connection by clicking Yes.
- Once the SSH Connection is open, you should see a terminal prompt asking for your username. Type your username (i.e. root) and press Enter. Then, next it will asking you for the password. Type your password (you will NOT see your cursor moving, or any characters typed) and press Enter again.
You will see a prompt below if you succeed to connect to the server :
[root@example ~]#
3. Linux distributions include support for SSH by default as well. Simply start up a terminal.
Run below command to connect to your linux server via SSH (port 22):
[root@client ~]# ssh root@example.domain.com -p22 The authenticity of host 'example.domain.com (192.168.2.155)' can't be established. RSA key fingerprint is 45:83:45:4a:e3:29:7e:fa:f3:c3:7d:64:ea:3a:6f:58. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added 'example.domain.com,192.168.2.155' (RSA) to the list of known hosts. root@example.domain.com's password: