How to Secure a VPS Server with CrowdSec (2026 Guide)
Step-by-step guide to secure a VPS server with CrowdSec. Covers engine install, firewall bouncer (iptables & nftables), SSH protection, Nginx monitoring, and AppSec WAF.
Dragos
Tag: #Linux
16 guides with this tag
How To Do SSH Port Forwarding (SSH Tunneling) in Linux
Learn SSH port forwarding in Linux: local, remote, and dynamic tunneling. Set up persistent tunnels with systemd, SSH config, and security best practices.
Dragos
How To Access Remote Servers with SSH ProxyJump and Jump Hosts
Learn SSH ProxyJump and jump host setup for secure remote server access. Step-by-step bastion host configuration, security hardening, and troubleshooting.
Dragos
How to Monitor Server & Docker Resources: CPU, Memory, Disk
Learn how to monitor server resources (CPU, memory, disk, network) and Docker containers with Beszel, Netdata, Dozzle & Prometheus. Free self-hosted tools compared.
Dragos
How to Identify Processes Using Swap Space in Linux
Find which processes use swap space in Linux with smem, /proc/VmSwap, and shell scripts. Covers swappiness tuning, swap troubleshooting, and container swap tracking.
Dragos
Configure Postfix to Send Email Using External SMTP Servers
Configure Postfix to relay emails through external SMTP servers like Brevo, Mailgun, or Amazon SES. Step-by-step setup guide with an automated script.
Dragos
100+ Essential Linux Commands You MUST Know (2026 Guide)
Master the Linux command line with this cheat sheet of 100+ essential Linux commands. Covers file management, networking, system admin, and modern CLI tools, all with practical examples for 2026.
Dragos
Add a New Drive to Ubuntu LVM and Mount It Permanently
Add a new drive to Ubuntu LVM: pvcreate, vgcreate, lvcreate, ext4 format, and persistent mount with fstab nofail. Step-by-step guide for Ubuntu 24.04.
Dragos
Monitor CPU Usage and Send Email Alerts in Linux
Let's see how we can monitor CPU usage on a server and receive emails.
Dragos
How to Benchmark Cloud Servers (VPS)
Run disk, network, and CPU benchmarks on your VPS using YABS and other tools. Compare providers before you commit.
Dragos