Developer
You can enhance your SSH experience by automatically starting a screen or byobu session when you log in via SSH. This can help you maintain your sessions, especially when working on remote servers. Here’s how to set it up:
Edit Your ~/.bashrc File:
Open your ~/.bashrc file for editing using your preferred text editor. You can use a command like nano ~/.bashrc or vim ~/.bashrc.
Add the following code snippet to the end of your ~/.bashrc file:
When you need to modify file permissions recursively in a directory, you can use the chmod command along with the find command in Linux. Here are some commonly used commands to give different permissions to directories and files:
To recursively give directories read and execute privileges (755), you can use the following command:
Servers are not immune to security threats, especially when it comes to SSH (Secure Shell) access. Brute force attacks can compromise your server’s security. Fail2Ban is a tool that automatically defends your virtual private server (VPS) by monitoring log files and responding to malicious behavior. In this guide, we’ll walk you through setting up Fail2Ban on Ubuntu 12.04 to protect your SSH access.
First, you need to install Fail2Ban using apt-get:
It’s essential to exercise caution when terminating user sessions or SSH sessions, as abruptly killing processes can lead to data loss or corruption. However, if you need to forcefully terminate a user’s session and their associated SSH session, you can follow the steps you’ve outlined. Below is a more detailed explanation of the commands you’ve mentioned:
1. Terminate the User’s Sessions:
To terminate a specific user’s sessions, you can use the pkill command followed by the -u option with the username.
Author: NIXCRAFT
Published Date: October 16, 2006
Last Updated: October 16, 2006
Category: HOWTO, TIPS, TROUBLESHOOTING
If you’ve experienced your OpenSSH server connection dropping out after a few minutes or a specific period of inactivity, don’t worry; it’s not a bug but rather a security feature. This behavior is usually due to a packet filter or NAT (Network Address Translation) device timing out your TCP connection as a security measure. This issue typically occurs when using SSH protocol version 2.
Securing your OwnCloud server is crucial to protect your data from potential threats. In this guide, we will focus on two key aspects: automatically installing security updates and preventing brute-force password hacking attempts.
No software package is flawless, and security vulnerabilities may exist in your server’s software stack, from the Linux kernel to the SSL library. However, many of these vulnerabilities have patches available, and the primary reason they get exploited is due to delayed or neglected security updates.