Secure Web Server

Lab 2B • DNS & HTTPS Configuration

Server Status

Protocol
HTTPS Enabled
Certificate
Let's Encrypt
Web Server
Apache 2.4
Operating System
Ubuntu Linux

DNS Configuration

  • A Record — Maps domain to server IPv4 address
  • CNAME Record — Alias pointing to canonical domain
  • TXT Record — Contains verification information
  • MX Record — Mail exchange server configuration (Extra Credit)

Security Features

  • TLS 1.3 encryption for all connections
  • Automatic HTTP to HTTPS redirect
  • Let's Encrypt certificate with auto-renewal
  • Alias domain redirection to canonical domain

Useful Commands

  • Check DNS: nslookup -type=A your_domain.4hx.net
  • Check TXT: nslookup -type=txt your_domain.4hx.net
  • Check Certificate: sudo certbot certificates
  • Test Redirect: curl -I http://your_domain.4hx.net