Linux
Ubuntu Server Hardening: The Solvitron Standard
Deploying a Linux server without hardening is like leaving your front door open. At Solvitron, we follow a strict 15-point checklist for every new Linux deployment.
1. User Management & SSH Keys
Never allow root login via SSH. Create a sudo user and enforce key-based authentication.
# Create new user
adduser admin_user
usermod -aG sudo admin_user
# Disable Root Login
PermitRootLogin no
adduser admin_user
usermod -aG sudo admin_user
# Disable Root Login
PermitRootLogin no
2. Firewall (UFW)
Deny everything by default.
sudo ufw default deny incoming
sudo ufw allow ssh
sudo ufw enable
sudo ufw allow ssh
sudo ufw enable
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