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

  • How to set Linux Ubuntu Redhat Debian Command Line http https socks proxy for yum apt
  • How to resize a pdf without losing much quality in Linux Mint Ubuntu Debian Redhat Solution
  • qemu: could not load PC BIOS 'bios-256k.bin' solution
  • Proxmox How To Custom Partition During Install
  • Hyper-V Linux VM Boots to Black Screen, Storage, NIC Not Found Issues
  • Ubuntu Mint How to Fix Missing/Broken /dev and /dev/pts which causes terminal to immediately close exit and not work
  • How high can a Xeon CPU get?
  • bash fix PATH environment variable "command not found" solution
  • Ubuntu Linux Mint Debian Redhat Youtube Cannot Play HD or 4K videos, dropped frames or high CPU usage with Nvidia or AMD Driver
  • hostapd example configuration for high speed AC on 5GHz using WPA2
  • hostapd how to enable and use WPS to connect wireless devices like printers
  • Dell Server Workstation iDRAC Dead after Firmware Update Solution R720, R320, R730
  • Cloned VM/Server/Computer in Linux won't boot and goes to initramfs busybox Solution
  • How To Add Windows 7 8 10 11 to GRUB Boot List Dual Booting
  • How to configure OpenDKIM on Linux with Postfix and setup bind zonefile
  • Debian Ubuntu 10/11/12 Linux how to get tftpd-hpa server setup tutorial
  • efibootmgr: option requires an argument -- 'd' efibootmgr version 15 grub-install.real: error: efibootmgr failed to register the boot entry: Operation not permitted.
  • Apache Error Won't start SSL Cert Issue Solution Unable to configure verify locations for client authentication SSL Library Error: 151441510 error:0906D066:PEM routines:PEM_read_bio:bad end line SSL Library Error: 185090057 error:0B084009:x509 certif
  • Linux Debian Mint Ubuntu Bridge br0 gets random IP
  • redis requirements