Cisco ASA 5505 Configuration Manual page 1788

Glossary
Enables the adaptive security appliance to reply to an
Proxy-ARP
See also ARP.
A public key is one of a pair of keys that are generated by devices involved in public key infrastructure.
public key
Data encrypted with a public key can only be decrypted using the associated private key. When a
private key is used to produce a digital signature, the receiver can use the public key of the sender to
verify that the message was signed by the sender. These characteristics of key pairs provide a scalable
and secure method of authentication over an insecure media, such as the Internet.
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 adaptive security appliance and update the screen. The
refresh
icon and 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 users. 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.
The path through a network.
route, routing
In routed firewall mode, the adaptive security appliance is counted as a router hop in the network. It
routed firewall
performs
mode
mode.
Cisco ASA 5500 Series Configuration Guide using ASDM
GL-16
AAA and TACACS+.
NAT between connected networks and can use
ARP request for IP addresses in the global pool.
public key.
OSPF or RIP. See also transparent firewall
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