Linux/Unix Open SSH Login Without Password Key Exchange including Debian, Redhat, Fedora, Ubuntu, BSD etc..

In those 4 simple commands you can setup mutual key exchange between two sshservers by using a single login shell session and single window.

*Just change the IP address examples of (10.10.0.2) to the target of your mutual key exchange.  It doesn't matter if the server is on a LAN or WAN (well unless the server is behind a firewall and you cannot SSH into it).

Code:
ssh-keygen -t rsa
cat ~/.ssh/id_rsa.pub|ssh 10.10.0.2 tee -a ~/.ssh/authorized_keys

ssh 10.10.0.2 ssh-keygen -t rsa
ssh 10.10.0.2 cat ~/.ssh/id_rsa.pub |tee -a ~/.ssh/authorized_keys


  • *tee simply just takes stdinput and redirects it to where ever you say.
  • *on some systems you'll need to chmod 600 ~/.ssh/authorized_keys


If you want to do it the hard way, on both servers you can just run this command:

ssh-keygen -t rsa

Just keep hitting enter, and then copy and paste the contents of:

~/.ssh/id_rsa.pub into the other servers "~/.ssh/authorized_keys" file.

Be careful not to add any extra spaces or line breaks when copying it or it won't work.

 

 

 


Tags:

linux, unix, ssh, login, password, debian, redhat, fedora, ubuntu, bsd, etc, commands, sshservers, shell, ip, examples, doesn, server, lan, wan, firewall, keygen, rsa, id_rsa, pub, tee, authorized_keys, stdinput, redirects, ll, chmod, servers, contents, quot, spaces, copying,

Latest Articles

  • CentOS 6 impossible to compile a newer libguestfs
  • chroot
  • How To Get Started on Ubuntu with gpt-2 OpenAI Text Prediction
  • Remove cloud-init in your VM
  • QEMU-KVM KVM Command Line Practical Guide
  • Linux How To Change NIC Name to eth0 instead of enps33 or enp0s25
  • virt-resize: error: libguestfs error: could not create appliance through libvirt.
  • Asterisk Does Not Retry When Authentication Fails
  • Linux Debian Ubuntu How To Install PEPPER Faster and Latest Adobe Flash Player in Firefox
  • How To Speed Up Linux Ubuntu and Debian Based Computers By Improving CPU Performance and Changing the CPU Governor
  • Convert data or file to base64 on a single line
  • Linux Mint Ubuntu Debian radeon slow 2D performance issues radeon_dp_aux_transfer_native: 158 callbacks suppressed
  • mdadm: super0.90 cannot open /dev/sdb1: Device or resource busy mdadm: /dev/sdb1 is not suitable for this array.
  • How To Install NextCloud on Centos 7 and Centos 8
  • AH01630: client denied by server configuration:
  • ERROR: Could not find a version that satisfies the requirement PIL (from versions: none) ERROR: No matching distribution found for PIL
  • ZTE Camera Cannot Work unable to connect to camera. Camera has been disabled becaue of security policies or is being used by other apps
  • QEMU KVM how to boot off a physical CD/DVD/BDROM Drive
  • How To Install OpenProject on Centos 7 Step-by-Step Guide
  • Ubuntu Debian Linux Cannot Install Wine Solution - wine1.6 : Depends: wine1.6-i386 (= 1:1.6.2-0ubuntu14.2) but it is not installable wine1.4 : Depends: wine1.6 but it is not going to be installed