Network Security - HP 200 Series Services And Applications

Routing with OSPF

Network Security

Network Security
Routing Authentication
To enhance security, routing updates may optionally be authenticated using
a simple password. When routing authentication is enabled, all OSPF proto-
col packets are password protected. Passwords are from 1 to 8 characters
and are configurable on a link basis. The determination to use routing
authentication is made on an area basis. When routing authentication is used
in an area, passwords must be configured on all links in the area.
Information Hiding
As discussed above, routers in each area have identical topological
databases. Each router knows the topology of the areas to which it is
attached. Only summary information is exchanged between areas. Thus, the
topology of an area is hidden from routers outside the area.
Type-of-Service-Routing
Type-of-service routing is not yet available on HP routers. Currently, HP
routers implement TOS 0 routing only. The following discussion is intended
only to explain the type-of-service routing concept.
Type-of-service routing is based on the type of service defined in the Internet
Protocol Specification, RFC 791. Three abstract quality-of-service parame-
ters are given—delay, throughput, and reliability. These quality-of-service
parameters (when used) are set in the IP protocol header by the system
originating the IP datagram. Type-of-service values range from 0 to 7. Table
C shows the four most common types of service. Note that the other types of
service are based on combinations of the quality-of-service parameters given
in table C.
3-82