How to do that? You can try to connect to the openssh server from your localhost through your openssh client or do a portscan with nmap, but I like to use a small tool called netcat, also known as the TCP/ IP Swiss army knife. How Do I Connect to OpenSSHīefore we go further, we need to verify if our openssh server is working or not. $ sudo cp /etc/ssh/sshd_config /etc/ssh/sshd_config.original_copyĪs you can see from the command I typed, I added the original_copy suffix, so every time I see this file I know it is an original copy of the sshd config file. Open a terminal and run the following command to make a copy of the original sshd configuration file. It’s time to configure our OpenSSH behaviour through the ssh config file, but before editing the /etc/ssh/sshd_config file we need to backup a copy of it, so in case we make any mistake we have the original copy. # yum -y install openssh-server openssh-clients Configuration of OpenSSH Type the following yum command to install openssh client and server. On Ubuntu/Debian/Linux Mint $ sudo apt-get install openssh-server openssh-client On RHEL/Centos/Fedora To install OpenSSH, open a terminal and run the following commands with superuser permissions. SFTP client and server support in both SSH1 and SSH2 protocols.Interoperability (Compliance with SSH 1.3, 1.5, and 2.0 protocol Standards).Strong Authentication ( Public Key, One-Time Password and Kerberos Authentication).Port Forwarding (encrypted channels for legacy protocols).X11 Forwarding (encrypt X Window System traffic).
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