Introduction RTU500 series Remote Terminal UnitAccess to the Web server1-2 | 1KGT 150 924 V000 1 - ABB AG[1] 1KGT 150 722 Security Deployment Guide Line[2] 1KGT 150 801 RTUtil500 User's Guide1.4 Access to the Web serverThe integrated Web server of the RTU500 series is accessed by a Web browser, using the IP ad-dress of one of the Ethernet Interfaces of the RTU Communication Unit. The figure below shows anexample with the Microsoft Internet Explorer.Figure 1: HTTPS access to an RTU Web serverThe access to the RTU500 series Web server is enabled by default, but it is possible to disable theaccess for each Ethernet interface in the configuration tool RTUtil500 [2]. See chapter "RTUtil500configuration" for information how to disable the RTU500 series Web server.Besides the secure standard HTTPS access, the RTU500 series Web server supports also HTTP.For more information about the secure access see chapter 7-1. This chapter describes theconfiguration and the certificate handling required for the secure HTTPS access.After a successful connection, the RTU500 series Web server requests a user name and passwordfor log-in. An example for the log-in dialog presented by the Web browser is shown in the figurebelow. Information about the default user names and passwords can be found in chapter "UserAccounts / Passwords".