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Cisco PIX Firewall and VPN Configuration Guide
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Appendix A Acronyms and Abbreviations
NSSA not so stubby area.
NTP Network Time Protocol—Set system clocks via the network.
NVT Network virtual terminal.
OSPF Open Shortest Path First protocol.
PAP Password Authentication Protocol. Authentication protocol that lets PPP peers
authenticate one another.
PAT Port Address Translation.
PDM PIX Device Manager.
PFS perfect forward secrecy.
PFSS PIX Firewall Syslog Server.
PIM Protocol Independent Multicast.
PIM-SM PIM sparse mode.
PIX Private Internet Exchange.
PKI Public Key Infrastructure.
POP Post Office Protocol.
PPPoE Point-to-Point Protocol over Ethernet.
PPP Point-to-Point Protocol. Provides PIX Firewall-to-router and host-to-network
connections over synchronous and asynchronous circuits.
PPTP Point-to-Point Tunneling Protocol. RFC 2637 describes the PPTP protocol.
RA registration authority.
RADIUS Remote Authentication Dial-In User Service—User authentication server
specified with the aaa-server command.
RAS The registration, admission, and status protocol. Provided with H.323 support.
RC4 RC4 is stream cipher designed by Rivest for RSA Data Security, Inc. It is a
variable key-size stream cipher with byte-oriented operations. The algorithm is
based on the use of a random permutation.
RFC Request For Comment—RFCs are the defacto standards of networking protocols.
RIP Routing Information Protocol.
RPC Remote Procedure Call.
RSA Rivest, Shamir, and Adelman. RSA is the trade name for RSA Data Security, Inc.
RTP Real-Time Transport Protocol.
RTCP RTP Control Protocol.
RTSP Real Time Streaming Protocol.
SA security association.
SCCP Simple (Skinny) Client Control Protocol.
SDP Session Description Protocol.
SIP Session Initiation Protocol.
Table A-1 Acronyms and Abbreviations (continued)
Acronym Description
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