Filtering | The OfficeConnect Remote 840 provides an extensive set of data filtering |
Capabilities | capabilities. The OfficeConnect Remote 840 supports the following |
| filtering capabilities: |
| ■ Input and output data filtering. |
| ■ Source and destination address filtering. |
| ■ Protocol filtering. |
| ■ Source and destination port filtering. A packet filter can control what |
| services local or remote users can access. |
| ■ Route filtering can filter source and destination addresses in packets |
| that exchange routing table information. |
| ■ Established session filtering. A packet filter can permit users to |
| connect with a remote network without letting remote users have |
| access to the local network (or vice versa). |
Filter Classes The OfficeConnect Remote 840 supports three filter classes:
■Input data — filter packets as they enter.
■Output data — filter packets as they exit.
■Embedded bypass — for periodic router protocol packets (IP RIP, IPX RIP and IPX SAP)
Each filter class can be identified further by the following types:
Filter Types Filters can be classified by the following types:
■Data filters — based on
■Advertisement filters — based on broadcast packet information (IP RIP, IPX RIP, and IPX SAP).
■Generic filters — based on packet structure.
Data Filters Data filters control network access based on the protocol, source / destination address, and port designation (e.g., TCP and UDP port designations) of the packet. The following table describes the data filters supported.
