Automatic Protocol Detection; Ip And Ipx Packet Filtering - Bay Networks 3395A Release Note

Automatic Protocol Detection

IP and IPX Packet Filtering

896-066-B
RIP and SAP route-propagation is performed using a "split horizon
algorithm."
NOTE: This algorithm indicates that when broadcasting RIP routes or
SAP announcements to a given network, an individual router should only
include data that the other network is not likely to know. For example, a
router must not advertise a route to a network that it had learned from
that network.
• Compatibility with Model 3395A server security mechanisms
IPX can be used in conjunction with all Model 3395A server access
security methods, including Kerberos and SecurID authentication.
• Product support
The IPX feature is supported on Model 3395A servers that have six or
more wires and can run the TS3395m.img multimegabyte load image.
Access server ports can be configured to accept connections made via different
protocols, using Automatic Protocol Detection (APD). Using APD, ports will
automatically determine the protocol being used to make a connection and
adjust port settings appropriately. Alternatively, by not enabling APD, ports can
be dedicated for use by a single access serving protocol. Key features of APD
include:
• An individual port can be configured to accept any connections made via
ARAP, PPP, SLIP (which includes CSLIP), and interactive protocols, as
well as all or none of these.
• Ports can be configured to limit the amount of time spent in an attempt to
determine which protocol is being used to make a connection. When the
time expires, then the port will either default to a specific protocol, or log
out the connection, as specified by the server manager.
A Model 3395A server has a single network interface (Ethernet connection)
and multiple, separate, asynchronous interfaces (serial ports). Each interface
can be configured with IP or IPX filters. These filters are used to allow certain
IP or IPX traffic to pass through the server. The filters can specify network
destination or source address, protocol, packet type, as well as other
filter-specific criteria. Filtering is disabled by default.
The software can be configured to filter IP traffic, based on the following
criteria:
• Source or destination address or network (internet-address and/or subnet)
• IP packet type (port number, protocol, setting of TCP SYN bit)
New Features
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