46
Remote access from the Internet
User Manual PoolManager
®
83
5
Router's IP address on the local network
6
Router's Internet connection
(with separate IP address on the Internet)
7
Internet (World Wide Web)
The network router receives its IP address on the Internet from the
Internet service provider. In most cases, this address is dynamic, i.e. it
can change at any time, such as due to a reboot of the Internet
connection. This is designated a
dynamic IP address.
Internet services providers also issue
static IP addresses
, which do
remain the same. However, to do so, special service packages with
static IP addresses have to be booked. Most standard DSL packages
work with dynamic IP addresses.
46.1
Dynamic IP address resolution
For remote access to PoolManager
®
from the Internet, you'll need your
router's current IP address on the Internet. If a dynamic IP address is
being used, then it won't be known initially.
The DynDNS system (or DDNS (dynamic Domain Name System
entry)) resolves this problem. These are services on the Internet (Web
services) to which your router regularly transmits its current IP
address. The DynDNS service provides you with a URL (such as
http://myPoolManager.dyndns.org
). When you call up that URL from a
browser, the DynDNS service automatically forwards the query to the
current IP address of your network router. In this manner, you have
access to your network router at all times, even if it is using a dynamic
IP address.
46.2
Step by step
INFO
Static IP address
If your network router has a static IP address on the
Internet, then there is no need to set up a DynDNS
service.
46.2.1
DynDNS account set-up
Select a DynDNS provider and set up an account. This is done via the
DynDNS provider's website.
In general, the following data have to be entered:
•
Username
•
Password
•
E-mail address for confirming the account
•
Host name
The host name determines the URL you use to access your
PoolManager
®
: It generally consists of two sections:
1.
A freely selectable name, such as
myPoolManager
®
(the name selected has to be available still)
2.
A fixed extension issued by the DynDNS provider, such as
dyndns.org, dtdns.net, no-ip.com,... Some providers have
various extensions available.
An example of a complete URL for remote access would then be:
http://myPoolManager.dtdns.net
DynDNS providers with free services include, for example,
dtdns.net
or
no-ip.com
. For a detailed description on setting up a DynDNS
account, please refer to the documentation from the respective
provider.
46.2.2
DynDNS configuration on a network router
Now you'll have to activate the network router's DynDNS function. This
ensures that the router regularly transmits its current IP address to the
DynDNS service.
Most modern network routers support the DynDNS function. Should
your router not support this function, then we recommend replacing
the router.
The DynDNS function is generally configured by entering information
about your DynDNS account:
•
Username
•
Password
•
Host name
The exact configuration procedure is heavily dependent upon the
router used. Generally, the router has either a Web interface for
configuration or a special configuration program.
You'll need the access data (username and password) for accessing
router configuration.
For a detailed description, please refer to the documentation for the
router being used.
46.2.3
Port forwarding on the network router
For remote access to PoolManager
®
, you'll still need to set up port-
forwarding on the network router. Port forwarding ensures that the
router forwards the respective queries from the Internet to
PoolManager
®
.
Remote access to PoolManager
®
is realised via the standard HTTP
port 80. The port accesses the data recipient, which in this case is
PoolManager
®
web server.
Therefore, port forwarding must be set up as follows:
•
Port 80 forwarded to PoolManager
®
IP address on the local
network.
•
If applicable, port 80 should be entered as the destination port.
Nearly all modern network routers offer the capacity to set up port
forwarding.
For a detailed description, please refer to the documentation for the
router being used.
46.3
Prerequisites and potential problems
Requirements for the web browser used
•
Support for the current HTM5 standard
•
JavaScript activated (it usually is)
Requirements for the network router
•
Port forwarding
•
DynDNS function
(Only when using a dynamic IP address)
•
External access to port 80 may not be blocked
•
The router must be configured such that it is permanently
connected to the Internet. If it is not connected, then remote
access will not be possible.
Requirements for the Internet Service Provider
•
Contract terms and conditions may not prohibit operation of a web
server
•
You need a public IP address, i.e. your network router's IP
address must be visible on the Internet. For some wireless
contracts (e.g. LTE without telephony), you are not issued a public
IP address. Operating a web server is not possible with that type
of contract. A public IP address is generally a dynamic IP address
that can change at any time. Unchangeable IP addresses are
designated as static or fixed.
•
The Internet service provider has to permit access to port 80