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About the CyberSWITCH 100 Router
Bridging and Routing Protocol Filtering
Filtering can be used to allow efficient usage of network resources and provide security for your
network and hosts.
The CyberSWITCH 100 supports IP Internet Firewall filtering to prevent
IP Internet Firewall —
unauthorized access to your system and network resources from the Internet. A security violation
can occur when a packet is received from a WAN link, typically connected through the Internet,
which has the source IP address of a secure host on your LAN. Using this secure host address,
functions can be performed that only the secure host is authorized to perform. This filter discards
packets from the WAN which have a source IP address recognized as a local LAN address.
Bridge Filtering —
Bridge filtering allows a network administrator to control the flow of packets
across the router. Bridge filtering can be used to "deny" or "allow" packets based on a "matched
pattern" using a specified position and hexadecimal content within the packet. This enables
restricting or forwarding of messages based on address, protocol or data content. Common uses
are to prevent access to remote networks, control unauthorized access to the local network, and
limit unnecessary traffic.
Bandwidth Optimization Features
The CyberSWITCH 100 provides a number of features to maximize throughput and minimize use
of WAN resources.
The CyberSWITCH 100 supports data compression of up to 4:1 allowing
Data Compression —
data transfer rates over an ISDN line at up to 512 Kbps (bit rate realized after data decompression).
Dial-up WAN resources are accessed only when remote access is required
Dial on Demand —
and released as soon as the resource is no longer needed.
Bandwidth on Demand —
The CyberSWITCH 100 optimizes the use of WAN resources (i.e.,
two ISDN B-channels) to increase throughput, depending on load requirements. Two ISDN
B-channels can be "bundled" to permit transmission of data traffic over both channels after a link
utilization threshold is reached. The second channel is released when utilization falls below the
threshold. Support includes both routing and bridging applications. Bandwidth-on-demand
management can occur on incoming, outgoing, or in both directions. The Multi-Link Protocol for
PPP (MLP) is used to implement this feature.
Each 64 Kbps ISDN B channel can be used individually for a separate data
Split B Channels —
connection.
20 CyberSWITCH 100 Advanced User Information
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