Critical infrastructure asset owners have been putting excessive trust on traditional perimeter protection with firewalls as a single line of defense. Recent events and modern threats require us to advance that concept. There are concrete examples that show one-way gateway approach is a proven and reliable solution that improves the traditional first line of defense and provides additional protection to rail automation applications and other critical infrastructure assets.
1. Present an alternative and trustworthy solution utilizing a one-way gateway
2. Highlight the defense-in-depth strategy
3. Discuss the trend of using firewalls as a single line of defense