Firewall Technologies
Firewalls are a key security technology in the modern network infrastructure. This section details their evolution and the technologies that have resulted.
Firewall fundamentals
The firewall should
Be resistant to attacks
Be the only transit point
Enforce the access control policy of the organization
Static packet-filtering firewalls
These work at Layer 3 and 4, examining packets one at a time. They are implemented on a Cisco ...
Get CCNA Security Quick Reference now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
