Logical Solutions SCS-R manual Initial Sysadmin Access, SCS System Architecture

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System Administration

5.1.3 SCS System Architecture

The SCS software design uses both RAM (volatile) and Compact Flash (non-vola- tile) memory. Any system changes are maintained in RAM until they are written to the Compact Flash memory. A read-only memory system is used since Compact Flash memory devices have a limited number of read-write cycles.

After making administrative changes to the system, the root user must run the save command to write the changes to the non-volatile memory. If the data changes are not saved, the parameter changes will be lost in the event of a power failure.

5.2 Initial Sysadmin Access

When the SCS is first powered up, you may want it to be configured to operate with your network. You will use ssh to access the SCS.

The SCS product uses familiar Linux commands to administer the system. This manual will list those Linux commands that are important for the SCS sysadmin to know; other Linux / UNIX commands are discussed in a myriad of Linux reference and training manuals.

5.2.1 Connect using a Terminal

Connect the SCS’s Console port to your terminal, or to a computer using a terminal emulation program. When you successfully connect with the SCS, your terminal will show the header and login prompt:

Figure 5.1 SCS login display (default)

Logical Solutions Inc Secure Console Server

Kernel xxxxxxxxxxxx on an i486

scs.localdomain login:

Later, after you change your SCS’s Hostname, your new hostname information will be shown in your login line (in place of scs.localdomain, above).

SCS160 / SCS320 / SCS480

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SCS160R / SCS320R

 

 

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Contents Product Manual SCS and SCS-R ModelsCopyright Notice Product Overview Initial Configuration Commands Administering Users Regulatory & Safety File System Introduction SCS Models Covered in this ManualSystem Features IntroductionSoftware Features Hardware Features1 SCS160R / SCS320R Hardware SCS480, 48-Port Secure Console Server, front and rear viewsTechnical Specifications TCP/IPSCS320R, showing front and rear views Product Overview Intended ApplicationSystem Chassis 1 SCS160 / SCS320 / SCS4802 SCS160R / SCS320R Connecting to the SCS Serial DevicesBreak Safe 3.1 SCS160 / SCS320 / SCS480 AC PowerIP Network 3.2 SCS160R / SCS320RUser Access Control Port BuffersUser Sessions For Your Notes Installation Mounting the SCSRack Mount or Desktop Front Panel Display and Buttons PowerConnections 3 It’s Convection CooledConnecting to the Network Port Connect your Console3.1 SCS160R / SCS320R Dual NIC Interface Connect to the Ports 4.1 SCS160R / SCS320R Dual Console InterfacePort Adapters Serial Port Pinout PinSCS160R / SCS320R Power Modules Left Supply Failed Tue Mar 18 154307Secure Console Servers SCS160R / SCS320R Power Modules AC Power Module ReplacementReplacing an AC Module Left Module shown partially removed Initial Configuration Default ConfigurationNetwork Connection Requirements Initial System Security ConcernsInitial Connection via Network Route via Linux workstationRoute via Windows workstation From a DOS prompt, enterPuTTY Configuration Screen Front Panel Network Setup Front Panel Edit ModeStart Front Panel Edit Mode SCS Front Panel Display, showing first Edit Mode displayProgram Network Network IP AddressEdit IP Address 192.168.075.239 Net MaskEdit Net Mask 255.200.000.000 GatewayEdit Gateway Exit to Main MenuExit to Main Menu For Your Notes Linux General Public License System AdministrationSCS Systems are Linux-based Understanding LinuxInitial Sysadmin Access Connect using a TerminalSCS System Architecture Enter Commands Log In as rootLog Out Default Services Configure the ServicesConfigure the Services For Your Notes Commands System CommandsSave Command RebootPoweroff Other Linux CommandsSsh-keygen SftpSsh SttyChange Logging Level VersionsFor Your Notes Security Change Network AddressRun netconfig Example of netconfig fill-in fields More Than One NameserverTime Configuration Change HostnameChange NIC Speed Configure Authentications Front Panel Display OptionsDisplay Mode Parameters EditView LINE2 Network Time ServiceLINE1 Display OFFConfigure NTP Start the NTP ServiceChanging Serial Port settings NIS and User Port PermissionsUser Port Control NIS Port Access WhereUser Names and Groups NIS Database fileGroup Permissions NIS Make file NIS Configuration File10 NFS Remote NFS DirectorySnmp SyslogStart Snmp Timeouts Administering Users User SetupEdituser Other Editing CommandsAdduser DeluserEditbrk name Editesc nameFor Your Notes SCS Users User OperationsUser Accounts Root userPort Identities What Can a User DoBreak Sequence Escape SequenceEditbrk Edit Escape Sequence Symbols found on the Product Regulatory & SafetySafety Requirements Product Serial NumberEuropean Union Regulatory ComplianceNorth America Declaration of ConformityStandards With Which the Products Comply Supplementary InformationLithium Battery Australia & New Zealand10.7 SCS160R / SCS320R Power Modules For Your Notes How to Contact Logical Customer SupportWebsite Mail Telephone11.1.4 Fax Product Support WarrantyReturn Authorization Our AddressFor Your Notes Appendix a File System Read-Only vs. Read-WriteLSI Directories Appendix B FAQ How do I do this?View a Buffer Product Support For Your Notes