| Microsoft Internet Security and Acceleration Server 2000 |
As part of the user setup process, you can select the Microsoft Internet Security and Acceleration (ISA) mode: firewall, cache, or integrated.
In firewall mode, you can secure network communication by configuring rules that control communication between your corporate network and the Internet. You can also publish internal servers, thereby sharing data on your internal servers with Internet users.
In cache mode, you can improve network performance and save bandwidth by storing commonly-accessed objects closer to the user. You can then route requests from Internet users to the appropriate Web server.
Different features are available for the firewall and cache modes, as shown in the following table. In integrated mode, all of the features are available.
| Feature | Firewall | Cache |
|---|---|---|
| Enterprise policy | Yes | Yes |
| Access policy | Yes | Yes, but only for Hypertext Transfer Protocol (HTTP) |
| Web publishing | Yes | Yes |
| Server publishing | Yes | No |
| Packet filtering | Yes | No |
| Cache configuration | No | Yes |
| Application filters | Yes | No |
| Web filters | Yes | Yes |
| Real-time monitoring | Yes | Yes |
| Alerts | Yes | Yes |
| Reports | Yes | Yes |
| Virtual private networking | Yes | No |
| SecureNAT client support | Yes | No |
| Firewall client support | Yes | No |
| Web proxy client support | Yes | Yes |