Siemens Synco OZW772 Series Commissioning Instructions page 166

DSL router
Dynamic DNS
Dynamic Host
Configuration Protocol
Dynamic IP address
DynDNS
Dynamic DNS
Ethernet
Firewall
Gateway
HTTP proxy
HTTPS
Hub
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The DSL router has several functions. It connects the Ethernet network (LAN) and
the internal network devices to the Internet. The router then requests the IP
addresses for the internal network devices from the DNS server. Port forwarding
(NAT, PAT) is also configured in the router. In addition, service "Dynamic DNS"
which automatically is updated after a change of the Dynamic DNS server, is
activated in the router.
see DynDNS.
see DHCP.
A dynamic IP address is assigned automatically via DHCP to a network device.
As a result, the IP address for a network device differs every time the device logs
in or at periodic intervals.
The ISP assigns dynamic IP addresses to network devices that are not online
continuously, i.e. integrated in the network. Dynamic IP addresses are reassigned
to other devices, as the number of addresses is limited. Web Server (permanently
online) does not use a dynamic IP address.
Dynamic DNS is a widely used Dynamic DNS service.
The DNS server assigns domain names and IP addresses. Dynamic DNS is
needed for dynamic IP addressing. It allows deployment of a network device with
dynamic IP address on the Internet.
Dynamic DNS ensures that a service is always available on the Internet under the
same domain name regardless of the current IP address.
A domain name can be registered with a Dynamic DNS service.
Ethernet is a network technology for local networks (LAN). Ethernet operates at a
transmission rate of 10 or 100 Mbps and has a maximum range of 100 meters
between two network components.
A firewall protects networks against unauthorized access from the outside.
Firewalls are hardware and/or software measures designed to control data
exchange between the private network to be protected and an unsecured network
(e.g. the Internet).
A gateway is a device connecting networks of different architecture (addressing,
protocols, interfaces, etc.). Although not entirely correct, the term often is used
interchangeably with router.
A proxy is a server used by network devices for Internet traffic. All requests are
sent via the proxy server.
The Web Server supports HTTPS (Hyper Text Transfer Protocol Secure).
A hub in a star-topology network connects various network devices by receiving all
data from one device and forwarding it to other devices.
Web server OZW772... V6.0
Appendix
CE1C5701en
2015-10-12