CHAPTER 3 89The system configuration settings encompass:• PPP (Point-to-Point Protocol) Dialup - management of the PPPinternet connection,• Dynamic DNS (Domain Name System) - management of yourhost name in the DNS to convert host names into affiliated IP(Internet Protocol) addresses in cases where the IP address isnot static,• SSH (Secure Shell) Tunnel - management of Secure ShellTunnelling to connect terminal devices via internet and bysecure communication,• Notification Sending - management of the allocation ofrecipients for transmissions of messages related to specificevents,• NTP - management of the Network Time Protocol (a protocolfor time synchronization between computers),• Dialup Modems - management of dialup modemcommunications with their RTUs,• Wireless Modems - management of Wireless Modemcommunications with their RTUs,• GPRS Modems - management of GPRS modemcommunications with their RTUs,• Users - management of users and user groups as well as oftheir respective access rights,• Operating System - management of operating systemspecific assignments,• Networking - management of the network configuration,• Gateway Detail - management of Gateway specificinformation.PPP DialupWith PPP Dialup, a network connection to the internet or to a PPPserver, respectively, is established by means of a dialup modem.The concerned menu allows you to determine the configuration ofa PPP network for a dialup modem connection.Note: In order to be able to use the PPP network, you have toenable at least one of your dialup modems for PPP dialup(“allow PPP dialup”).
