AWS Network Firewall Gets Smarter IP Validation for Route 53
AWS Network Firewall now validates resolved IPs from Route 53, letting you enforce firewall rules based on actual destination addresses instead of just domain names. This is a game-changer for protocols like SSH where clients don't send SNI data—you can finally block or allow traffic based on where domains actually resolve, not just what's in the request header.
source: [aws/security-blog]