Short for Password Authentication Protocol, the most basic form of authentication, in which a user’s name and password are transmitted over a network and compared to a table of name-password pairs. Typically, the passwords stored in the table are encrypted. The Basic Authentication feature built into the HTTP protocol uses PAP. The main weakness of PAP is that both the username and password are transmitted “in the clear” — that is, in an unencrypted form. Contrast with CHAP.
The data transfer process (DTP) for FTP establishes and manages the data connection. The DTP can be passive or active. Passive, or PASV, is a command that requests that the server “listen” on a data port (which is not its default data port) and to wait for a connection rather than initiate one upon receipt […]
- Port Address Translation (PAT)
Short for port address translation, a type of network address translation. During PAT, each computer on LAN is translated to the same IP address, but with a different port number assignment. PAT is also referred to as overloading, port-level multiplexed NAT or single address NAT.
Short for Payment Application Data Security Standard (PA-DSS) it is a best practices standard maintained by the Payment Card Industry Security Standards Council (PCI SSC) to assist software and other third-party vendors to develop secure payment applications that support compliance with the PCI-DSS.
- Private Branch Exchange (PBX)
Short for private branch exchange, a private telephone network used within an enterprise. Users of the PBX share a certain number of outside lines for making telephone calls external to the PBX. Most medium-sized and larger companies use a PBX because it’s much less expensive than connecting an external telephone line to every telephone in […]
- Peripheral Component Interconnect (PCI)
(1) Short for Peripheral Component Interconnect, a local bus standard developed by Intel Corporation. Most modern PCs include a PCI bus in addition to a more general ISA expansion bus. PCI is also used on some versions of the Macintosh computer. PCI is a 64-bit bus, though it is usually implemented as a 32-bit bus. […]