tainy hmod-v3-io, tainy hmod-l3-io - Dr. Neuhaus ...
tainy hmod-v3-io, tainy hmod-l3-io - Dr. Neuhaus ...
tainy hmod-v3-io, tainy hmod-l3-io - Dr. Neuhaus ...
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Small lexicon of routers<br />
TCP/IP<br />
(Transmiss<strong>io</strong>n<br />
Control<br />
Protocol/Internet<br />
Protocol<br />
Network protocol that is used to connect two computers on the Internet.<br />
IP is the basic protocol.<br />
UDP builds on IP, and sends individual packets. These can arrive at the<br />
recipient in a different sequence from the one they were sent in, or they can<br />
even get lost.<br />
TCP serves to secure the connect<strong>io</strong>n, and ensures, for example, that the<br />
data packets are forwarded to the applicat<strong>io</strong>n in the right sequence.<br />
UDP and TCP provide, in addit<strong>io</strong>n to the IP addresses, port numbers<br />
between 1 and 65535, which can be used to distinguish the var<strong>io</strong>us<br />
services.<br />
A number of addit<strong>io</strong>nal protocols are based on UDP and TCP, such as<br />
HTTP (Hyper Text Transfer Protocol), HTTPS (Secure Hyper Text Transfer<br />
Protocol), SMTP (Simple Mail Transfer Protocol), POP3 (Post Office<br />
Protocol, Vers<strong>io</strong>n 3), DNS (Domain Name Service).<br />
ICMP builds on IP, and contains control messages.<br />
SMTP is an e-mail protocol based on TCP.<br />
IKE is an IPsec protocol based on UDP.<br />
ESP is IPsec protocol based on IP.<br />
On a Windows PC, WINSOCK.DLL (or WSOCK32.DLL) handles both of<br />
these protocols.<br />
(� Datagram)<br />
UDP See TCP/IP<br />
UMTS<br />
VPN (Virtual Private<br />
Network)<br />
UMTS (Universal Mobile Telecommunicat<strong>io</strong>n System) is a 3rd generat<strong>io</strong>n<br />
mobile rad<strong>io</strong> network, which allows significant higher data transmiss<strong>io</strong>n<br />
rates, than the 2nd generat<strong>io</strong>n GSM networks. UMTS provides beside voice<br />
connect<strong>io</strong>ns also IP-based data connect<strong>io</strong>ns, SMS transmiss<strong>io</strong>n and high<br />
speed data applicat<strong>io</strong>n like video.<br />
Accept in North American area UMTS uses a frequency band at 2100 MHz.<br />
In North America the frequency bands at 850 MHz and 1900 MHz are used,<br />
which are also used for GSM networks.<br />
A virtual private network (VPN) connects several physically separate private<br />
networks (subnetworks) through a public network, such as the internet to<br />
form a common network. The use of cryptographic protocols ensures<br />
confidentiality and authenticity. A VPN thus offers an affordable alternative<br />
to standard lines for creating a suprareg<strong>io</strong>nal company network.<br />
Page 104 of 111 TAINY xMOD
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