Siemens OZW672.01 Commissioning Instructions page 138

Subnet mask
Switch
TCP
TCP/IP
TLS
Transmission Control
Protocol
Transport Layer
Security
UDP
Uniform Resource
Locator
Universal Plug and Play
UPnP
138 / 143
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A subnet mask masks the IP address, i.e. it determines which parts of the IP
address form the network number and which parts the computer number (e.g.
server).
Subnet mask 255.255.255.0 means that the first three sections of the IP address
determine the network number, and the fourth section is used for the computer
number. In this case, the first three IP address sections are identical for all network
devices. Example:
Subnet mask 255.255.255.0 masks IP addresses: 192.168.1.1...192.168.1.254.
Please note: Do not use the first IP address 192.168.1.0 and last IP address
192.168.1.255.
A switch, similar to a hub, is a connecting element to connect various network
segments or network devices. Contrary to the hub, a switch is an intelligent device
used to route packages only to the subnet or network device for which a package
is destined.
The TCP protocol is a TCP/IP protocol. TCP is responsible for transporting data
between two communication partners (applications). TCP is a secured transmis-
sion protocol, i.e. a connection is established, monitored and disconnected to
data transmission.
TCP is a so-called connection-oriented protocol. The transmission control protocol
TCP reassembles the data packages, sent by the Internet protocol IP via different
network connections, in the right order at the recipient.
Family of protocols used as the basis for the Internet. TCP/IP for the basis for
any number of internet services such as
SMTP (mail).
TLS (Transport Layer Security, for [outdated]: SSL Secure Sockets Layer) a
hybrid encryption protocol to transmit data over the Internet. TLS 1.0, 1.1 and
1.2 are standardized developments of SSL 3.0 (TLS 1.0 is now used for SSL 3.1).
In other words, SSL is being further developed under the name TLS.
The Web Server always uses TLS for e-mails to the extent supported by the e-mail
provider supports.
See TCP
See TLS
UDP is a TCP/IP protocol to control data traffic between two communication
partners (application). UDP, in contrast to TCP, is an unsecured protocol. UCP is a
so-called connection-less protocol. Data packets are broadcast. The recipient is
responsible for receiving data. The sender does not receive notification if the data
packages were received.
See URL
See UPnP
UPnP technology was designed for home and office networks. Devices supporting
UPnP automatically configure their network settings as soon as connected to a
network. In addition, they automatically provide, depending on class, own services
or use services of other devices on the network.
Web Server OZW672... V6.0
Appendix
HTTP (Web), FTP (file transfer) and
CE1C5712en
2015-10-13