Novell NETWARE 6-DOCUMENTATION Manual page 1870

Table 1
Protocol Suite
IPX
AppleTalk
TCP/IP
Bridging
Packet Forwarding Filters
10
Filter Configuration
OSPF —Controls the propagation of routing information from non-OSPF
domains (RIP, EGP, and so on) to the OSPF domain.
EGP —Defines the routes that a router can share with other EGP peers.
Protocol ID and ring number —Filters packets of certain protocol types
received by the bridge (Protocol ID filter), and filters packets received
from specific rings on a token ring network (ring number filter). Both
types of filters are only available for source route bridge.
Table 1 lists the protocol suites and the filter types that you can configure for
each with FILTCFG.
Filter Types and Protocol Suites
Packet Forwarding
Filters
X
X
Packet forwarding filters limit access to specific services by preventing
selected data packets from being forwarded by the router. These filters provide
the highest level of security because they examine each data packet forwarded
by the router. The filtering is based on the following packet characteristics:
Source interface
Destination interface
Source address
Destination address
Content
Packet forwarding filters do not restrict service advertisement packets sent by
servers. Therefore, restricted users might see advertisements of services even
when they cannot access the service.
Service Filters
X
X
Route Filters
X
X
X
Bridge Filters
X