138 OthersQ.4 I want to use a URL without a fixed IP address, how can I do that?A If you wish to access an RTR-5W by URL but without a fixed IP address, it ispossible to use a dynamic DNS. The DNS or Domain Name Server helps toswitch difficult to understand IP address of just numbers, such as"61.197.203.107" into easy to grasp names such as "www.tandd.co.jp" andhelps connect to the desired server.The DNS usually changes names to fixed IP addresses. But, if for somereason you cannot use a fixed IP address or for security reasons you wishnot to use a fixed IP address, there is a type of DNS called a dynamic DNS,which can handle ever-changing IP addresses.For example, the starting IP address is "210.0.0.1" and the URL associatedwith it is "http://www.rtr5w.com".The IP address "210.0.0.1" is of the changing type that is periodicallyreassigned by the provider. After a certain period of time the assigned IPaddress is changed to "210.0.0.2".Normally, at this point the DNS would not associate the URL with the IPaddress and access would be made impossible, but because the dynamicDNS tracks the IP address you can still access the desired server using thesame URL. There are many types of dynamic DNS plans and servicesavailable, please contact your local provider for more details.Q.5 Is it possible to connect to the Internet without a fixed IP address or anURL ?A Yes it is possible to connect without using a URL or having a fixed IPaddress, but because the IP address that will be assigned by the providerwill be constantly changing, the access will be varied and will not gosmoothly.For example, the IP address that you used successfully one hour before mayno longer work and access will be made impossible. Further, you will haveno way of verifying the new IP address.We strongly suggest using either a fixed IP address or a dynamic DNS.Q.6 If I connect the RTR-5W to the Internet, is it not possible that anotherperson could read my data or change my settings?A Yes, as long as you are connected to the Internet, the logger could well bethe target of unwanted access.And, as long as you are open on the Internet, it is possible that a third partycould view your current readings or recorded data, or even, make changesto your settings.
