\n
mkdir \/root\/.ssh && cd \/root\/.ssh\r\n<\/code><\/pre>\n<\/div>\n\n- Create and open the
authorized_keys<\/code> file using the following command:<\/li>\n<\/ol>\n\n
nano authorized_keys\r\n<\/code><\/pre>\n<\/div>\n\n- Paste your entire public key into the file and save it by pressing [CTRL+O].<\/li>\n
- Exit the editor by pressing [CTRL+X].<\/li>\n<\/ol>\n
How to Use Your SSH Private Key<\/strong><\/h2>\nTo use your SSH private key to log in to your Server Gigabit’s server, you will need to use an SSH client such as PuTTY.<\/p>\n
Using Your SSH Private Key with PuTTY<\/strong><\/h4>\n\n- Open PuTTY.<\/li>\n
- Under “Category” on the left-hand side, select “Connection”.<\/li>\n
- Select “SSH” from the list of protocols.<\/li>\n
- Click on “Auth” to open the authentication settings.<\/li>\n
- Click on “Browse” and select your private key file.
\n![\"Follow](\"https:\/\/contabo.com\/blog\/wp-content\/uploads\/2022\/02\/PuTTY-settings.png\")
<\/li>\n - Enter the IP address of your server in the “Host Name” field.<\/li>\n
- Choose a profile name in the “Saved Sessions” field.<\/li>\n
- Click on “Save” to save your profile.
\n![\"PuTTY](\"https:\/\/contabo.com\/blog\/wp-content\/uploads\/2022\/02\/PuTTY-settings-II.png\")
<\/li>\n<\/ol>\nNow you can double-click on your saved profile to log in to your server. You will be prompted to enter your username, but you will not be prompted to enter your password.<\/p>\n
Testing SSH Key Authentication<\/strong><\/h4>\nOnce you have set up SSH keys, you can test to make sure that they are working by trying to log in to your server using your SSH client. If you are able to log in without being prompted to enter your password, then SSH key authentication is working properly.<\/p>\n
Disabling Password Authentication<\/strong><\/h4>\nIt is a good security practice to disable password authentication once you have set up SSH keys. This will prevent anyone from logging in to your server using a password, even if they know your password.<\/p>\n
To disable password authentication, you will need to edit the \/etc\/ssh\/sshd_config<\/code> file on your server. Find the following lines and change them to “no”:<\/p>\n\n
ChallengeResponseAuthentication no\r\nPasswordAuthentication no\r\n<\/code><\/pre>\n<\/div>\nOnce you have made these changes, save the file and restart the SSH service using the following command:<\/p>\n
\n
systemctl restart ssh\r\n<\/code><\/pre>\n<\/div>\nNow, when you try to log in to your server using a password, you will be denied access. You will only be able to log in using SSH keys.<\/p>\n
Removing SSH Key Authentication<\/strong><\/h4>\nIf you ever decide to remove SSH key authentication and re-enable password authentication, you will need to edit the \/etc\/ssh\/sshd_config<\/code> file and change the following lines back to “yes”:<\/p>\n\n
ChallengeResponseAuthentication yes\r\nPasswordAuthentication yes\r\n<\/code><\/pre>\n<\/div>\nYou will also need to delete the .ssh<\/code> directory on your server using the following command:<\/p>\n\n
rm -rf \/root\/.ssh\r\n<\/code><\/pre>\n<\/div>\nOnce you have made these changes, restart the SSH service using the following command:<\/p>\n
\n
systemctl restart ssh\r\n<\/code><\/pre>\n<\/div>\nNow, you will be able to log in to your server using either SSH keys or a password.<\/p>\n
Conclusion<\/strong><\/h2>\nUsing SSH keys to authenticate with your Server Gigabit is a much more secure way to protect your server than using passwords. SSH keys are much more difficult to crack, and they provide a more convenient and flexible way to log in to your server. If you are not already using SSH keys, I highly recommend that you set them up.<\/p>\n<\/div>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
In today’s world of cybersecurity, simply using passwords to protect your Server Gigabit’s server is no longer enough. Hackers can easily crack passwords using brute force attacks or other methods, putting your server at risk. A more secure method of authentication is to use SSH keys. What are SSH Keys? SSH keys are a cryptographic key pair that consists of…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"kbtopic":[1099],"kbtag":[1112],"class_list":["post-3836","kb","type-kb","status-publish","hentry","kbtopic-tutorials","kbtag-ssh-keys"],"_links":{"self":[{"href":"https:\/\/www.servergigabit.com\/guide\/wp-json\/wp\/v2\/kb\/3836","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.servergigabit.com\/guide\/wp-json\/wp\/v2\/kb"}],"about":[{"href":"https:\/\/www.servergigabit.com\/guide\/wp-json\/wp\/v2\/types\/kb"}],"author":[{"embeddable":true,"href":"https:\/\/www.servergigabit.com\/guide\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.servergigabit.com\/guide\/wp-json\/wp\/v2\/comments?post=3836"}],"version-history":[{"count":1,"href":"https:\/\/www.servergigabit.com\/guide\/wp-json\/wp\/v2\/kb\/3836\/revisions"}],"predecessor-version":[{"id":3838,"href":"https:\/\/www.servergigabit.com\/guide\/wp-json\/wp\/v2\/kb\/3836\/revisions\/3838"}],"wp:attachment":[{"href":"https:\/\/www.servergigabit.com\/guide\/wp-json\/wp\/v2\/media?parent=3836"}],"wp:term":[{"taxonomy":"kbtopic","embeddable":true,"href":"https:\/\/www.servergigabit.com\/guide\/wp-json\/wp\/v2\/kbtopic?post=3836"},{"taxonomy":"kbtag","embeddable":true,"href":"https:\/\/www.servergigabit.com\/guide\/wp-json\/wp\/v2\/kbtag?post=3836"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![\"\"](\"https:\/\/www.servergigabit.com\/guide\/wp-content\/uploads\/2023\/11\/aaaaaaaa-300x169.jpeg\")
<\/p>\n![\"Use](\"https:\/\/contabo.com\/blog\/wp-content\/uploads\/2022\/02\/Puttygenerator.png\")
<\/li>\n![\"PuTTY](\"https:\/\/contabo.com\/blog\/wp-content\/uploads\/2022\/02\/PuTTY-generator-II.png\")
<\/li>\n<\/ol>\n