want to disable ssh clients from accessing using the password and only allow ssh login using SSH keys. How do I disable password authentication for SSH on Linux operating systems? [click to continue…]
host my blog in cloud server, and I set up ssh to manage my Ubuntu Linux 16.04 LTS server. However, I noticed lots of break in and brute-force attacks on my ssh server? How can I stop hacking attempts into my system? [click to continue…]
I configured and use my openssh server to accept only public key based
authentication. I need to test if my server accepting password. How to allow ssh client to use only password auth when pubkey auth configured? [click to continue…]
recently upgraded my MacOS Sierra and now ssh command keep asking for passphrase as follows when I try to login to my remote Linux/Unix server: Enter passphrase for key ‘/Users/vivek/.ssh/id_ed25519’:
How do I fix MacOS Sierra upgrade that keep breaking ssh keys in terminal? [click to continue…]
am a new Linux/Unix server admin. How do I change the SSH Port for my Linux or Unix server using command line option? [click to continue…]
am a regular Linux system user. In Linux (especially CentOS), I am used to applying updates a few times a week using yum command
, but how do I do that on my OpenBSD severer? How do I apply updates on OpenBSD operating system? [click to continue…]
penSSH version 7.2 has been released. How do I install or upgrade my existing OpenSSH version to 7.2 on a OpenBSD unix operating system? [click to continue…]
he OpenSSH project released an ssh client bug info that can leak private keys to malicious servers. A man-in-the-middle kind of attack identified and fixed in OpenSSH are dubbed CVE-2016-0777 and CVE-2016-0778. How do I fix OpenSSH’s client vulnerability on a Linux or Unix-like operating system? [click to continue…]
have a backup sync program on local server. I have an ssh password less login set up, and I can run commands on an external server in bash script doing:
ssh root@server2 "sync; sync; /sbin/shutdown -h now"
How do I run multiple commands in bash on a remote Unix or Linux server? What is the best way to SSH in and run various unix commands in a bash shell?
[click to continue…]
ow do I use and jump through one server to reach another using ssh on a Linux or Unix-like systems? Is it possible to connect to another host via an intermediary so that the client can act as if the connection were direct using ssh? [click to continue…]