POP3
The Post Office Protocol Version 3 (POP3) is a transmission pro-
tocol which controls how a client accesses emails from an email
server.
Port
The port number is used to decide the service (telnet, FTP, ...) to
which an incoming data packet should be sent.
PPP
The Point-to-Point Protocol (PPP) is a standardised technology for
setting up a direct connection between the network nodes via dial-
up lines.
PPPoA
The Point-to-Point-over-ATM Protocol (PPPoA) enables PPP data
packets to be transported directly over an ATM network.
PPPoE
The Point-to-Point-over-Ethernet Protocol (PPPoE) enables PPP
data packets to be transported directly over an Ethernet network.
PPTP
The Point-to-Point Tunneling Protocol (PPTP) is a network protocol
for encapsulating other protocols so that they can be transported via
the Internet Protocol (IP) in the form of a tunnel (VPN). PPTP uses
protocol number 1723. The PPTP architecture is divided into two lo-
gical systems. The PPTP Access Concentrator (PAC) and the PPTP
Network Server (PNS). The PAC is usually integrated into the Win-
dows client. It establishes the connection to the PNS and manages
it. The PNS is responsible for routing and controlling the packets re-
ceived by the PNS.
Pre-shared key
A pre-shared key (PSK) is a key for an encryption procedure. The
parties shared the key's value beforehand.
Prefix
See Network address
Prefix delegation
In IPv6 networks, prefix delegation is used to assign the network ad-
dress (prefix) to the router.
Prefix length
See netmask.
PRI
See Primary Rate Interface.
Primary Rate Inter-
face
The Primary Rate Interface is a network connection to the ISDN.
This type of connection is often also called a PRI or S2Minterface. A
Primary Rate Interface offers 30 user channels (B channels), each
with 64 kbits/s, in Europe and 23 in the USA, one control channel (D
channel) with 64 kbits/s and one synchronisation channel with 64
kbits/s in Europe and 8 64 kbits/s in the USA. See also Basic Rate
Interface.
bintec elmeg GmbH
Glossary
bintec RS Series
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