Cisco PIX 500 Series Configuration Manual page 1108

Glossary
Q
quality of service. Measure of performance for a transmission system that reflects its transmission
QoS
quality and service availability.
R
Registration Authority. An authorized proxy for a CA. RAs can perform certificate enrollment and can
RA
issue CRLs. See also CA, certificate,
Remote Authentication Dial-In User Service. RADIUS is a distributed client/server system that
RADIUS
secures networks against unauthorized access. RFC 2058 and RFC 2059 define the RADIUS protocol
standard. See also
Retrieve the running configuration from the security appliance and update the screen. The icon and
Refresh
the button perform the same function.
See RA.
registration
authority
A security service where the receiver can reject old or duplicate packets to defeat replay attacks.
replay-detection
Replay attacks rely on the attacker sending out older or duplicate packets to the receiver and the
receiver thinking that the bogus traffic is legitimate. Replay-detection is done by using sequence
numbers combined with authentication, and is a standard feature of IPSec.
Request for Comments. RFC documents define protocols and standards for communications over the
RFC
Internet. RFCs are developed and published by IETF.
Routing Information Protocol. Interior gateway protocol (IGP) supplied with UNIX BSD systems.
RIP
The most common IGP in the Internet. RIP uses hop count as a routing metric.
Reserved Link Local Address. Multicast addresses range from 224.0.0.0 to 239.255.255.255, however
RLLA
only the range 224.0.1.0 to 239.255.255.255 is available to us. The first part of the multicast address
range, 224.0.0.0 to 224.0.0.255, is reserved and referred to as the RLLA. These addresses are
unavailable. We can exclude the RLLA range by specifying: 224.0.1.0 to 239.255.255.255. 224.0.0.0
to 239.255.255.255 excluding 224.0.0.0 to 224.0.0.255. This is the same as specifying: 224.0.1.0 to
239.255.255.255.
The path through a network.
route, routing
In routed firewall mode, the security appliance is counted as a router hop in the network. It performs
routed firewall
mode NAT
Remote Procedure Call. RPCs are procedure calls that are built or specified by clients and executed
RPC
on servers, with the results returned over the network to the clients.
Cisco Security Appliance Command Line Configuration Guide
GL-16
AAA and TACACS+.
between connected networks and can use
public key.
OSPF or RIP. See also transparent firewall mode.
OL-12172-03