Firewall technologies
R. Zalenski · IEEE Potentials · 2002
We briefly cover six popular firewalls and combinations thereof. The pros and cons of these various firewall technologies with examples and more in depth explanations are provided: 1. Application-based firewalls; 2. Packet filtering; 3. Stateful-inspection; 4. Proxy; 5. Network address translation; and 6. Virtual private networks.