README.md

Tutorials

Set of tutorials dedicated to improvements and optimizations of MongoDB, SSL/TLS certificates, Web Development, SEO, Linux.

SSL/TLS certificates Tutorials

• Free letsencrypt certificates
• Verify letsencrypt certificate via DNS

Web Development Tutorials

• Social Networks Integration:
  • Open Graph basics - For Facebook and other platforms with Open Graph support
  • Pinterest Rich Pins basics
  • Structured Data basics - Schema.org for Google rich snippets
  • Twitter Card basics - Nice shared URLs with image, title and text preview

Linux Tutorials

• Change timezone
• .bash_profile tuning
• Users:
  • Change root password
  • Change user password
  • Create new system user
  • rbash - restricted users
• Security:
  • Change Default SSH port
  • Disable SSH login as root
  • Disable SSH login with password (passwordless authentication), use SSH Keys
  • Use RKHunter (Rootkit Hunter) to scan OS for vulnerabilities
  • Use Lynis for security audit
  • Basic firewall with iptables
  • Basic ipv6 firewall with ip6tables
  • Scheduled and Automated Backups

MongoDB Tutorials

• Security:
  • Use SSL certificates
• Performance & Maintenance:
  • Create Single Server ReplicaSet
  • Create Multiple (Custer) Server ReplicaSet
  • Use OpLog