November 1995
Intermediate to advanced
254 pages
5h 41m
English
Content preview from Enterprise-Wide Security Architecture and Solutions Presentation Guide
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7.2.1 Firewall Security Options
Figure 85. Firewall Security Options
Key Points
Firewall security features fall into three basic categories:
•
Packet filters, which are based on routers that can limit access based on
origin address, destination address, or TCP/IP protocol
•
Proxy servers act as intermediaries for the applications such as:
− User authenticated proxies
− Network authenticated proxies
− SOCKS server
− Application proxies for mail
•
Secure IP Tunnels, which use encryption to protect communication between
two secure trusted firewalls
Presentation Script
There are many technologies that can be used to implement firewalls, such as:
Packet filter
•
A standard ...
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