Intermediate 11 min

Secure your dedicated server

Firewall, SSH access, updates and good hardening practices.

#Security#Firewall#SSH

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Update the system

Once in service, apply the latest security updates:

Debian/Ubuntu: apt update && apt upgrade -y
Enable automatic security updates if possible

Secure SSH access

Create a non-root user and add it to the sudoers
Enable authentication by key SSH and disable password
Change the default SSH port and disable PermitRootLogin

Firewall

Limit open ports to the strict necessary with UFW or nftables (SSH, HTTP/HTTPS, application services). Also benefit from the Anti-DDoS network included.

Complementary hardening

Install fail2ban against rough force attempts
Monitor logs and IPMI/iDRAC access
Save your critical data regularly

Next steps

IPMI access / iDRAC