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USRobotics NETServer/8, NETServer/16 manual Hardwired Port Parameters, IPX Network Number

Models: NETServer/16 NETServer/8

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Hardwired Port Parameters

The parameters described below apply to port s0 if it has been configured as network hardwired.

Compression

This indicates whether Van Jacobson TCP/IP header compres- sion is enabled (on) or disabled (off). The default is off. Use the following command:

set s0 compression <on off>

IP Address

This is the IP address of the remote system. Use the following command:

set s0 address <IP address>

If the destination is set to 255.255.255.255 for PPP connections, the NETServer will try to learn the remote system’s IP Address. If set to 0.0.0.0, the port will be disabled for PPP connections.

IPX Network Number

This is the IPX network number of the serial cable connecting the NETServer to the other device. Note that the IPX network number must be unique to the networks on both ends of the serial connection. Use the following command for IPX:

set s0 ipxnet <IPX network number>

MTU

This is the Maximum Transmission Unit (MTU) used for the connection to the remote location. MTU sets the largest frame or packet size that a connection protocol will send. If an IP packet’s size is greater than the MTU setting, it’s broken down into smaller pieces. IPX packets larger than the MTU are discarded. Use the following command:

set s0 mtu <value>

IPX connections require an MTU of 1500.

10-44 Command Reference

Image 194

USRobotics NETServer/8, NETServer/16 manual Hardwired Port Parameters, IPX Network Number

Contents

NETServer/8 NETServer/16 Page Table of Contents Network Dial-in Access Administrative Tools Reference SectionWarranty and Service Limited WarrantyVii Service and SupportTechnical Support We welcome your suggestions for better documentation ViiiAdditional Software Enhancements Chapter OverviewWhat’s New with Release 3.1? OverviewAccounting Servers Netmask TableIP Address Spoofing Accounting Server SupportRadius Accounting and ANI/DNIS Multiple Name ServersRandomized Hosts Icmp Message LoggingNew Modem Port Features NETServer Overview IP Modem Sharing How do I get there from here? Administrative Utilities SecurityBasic Installation Chapter Basic InstallationSystem Administrator Requirements TCP/IP Reference Material Accessing the Command Line Getting Started Getting the LAN port up and running First step for IPX or IP/IPX networksBasic Installation IP Configuration You must also set the Broadcast Address. Type the following IPX Configuration Ethernet802.3 ethernet802.2 ethernet802.2II ethernetIIFinal Steps IP and IPX Default Gateways Recommended Global ConfigurationPassword To set the IP gateway, type the following Name Service Save your workBasic Installation Configuration Overview Chapter Configuration OverviewHow to Setup Applications Where do I go from here? Application SectionYou can abbreviate commands Command LineCommands are not case sensitive Separate a parameter and its value by a spaceHow to log out of the command line Reset any ports you have changedReboot when necessary Save your changesQuick Command Overview Hosts Table Overview of configurable tablesGlobal Configuration Location Table Initialization Script ConfigurationNet0 LAN Port Configuration Netmasks TablePacket Filter Table Port Configuration Port TypeSnmp Configuration Routes TableUser Table Configuration Overview IP Terminal Server Setup Chapter IP Terminal Server SetupTerminal or Workstation Setup NETServer Terminal Server Setup Overview User Table Port DefaultGlobal Default Set the port type to User Login Terminal Server Detailed SetupConfiguring a Port Set the port’s security Pass-Thru LoginCreate default user settings for the port Port Default Login Service Optional Friendly Stuff Save sport # Add the user to the User Table Configure the userAdding a Remote User to the User Table Login Service Configure for dialback use? IP Terminal Server Case Studies ExampleNETServer will use ports 6, 7, and 8 for this application Save your work and reset all the ports Example IP Terminal Server Setup Network Dial In Access Chapter Network Dial In AccessDial-in User Setup NETServer Setup for Network Dial-In Overview PreworkConfiguration NETServer Dial-In Detailed Setup Dialback Users on this Port? Save the changes to flash memory Create a new user Normal or dialback user?Add configuration information for the user This is the user’s IP subnet mask. Use the following command Option can be any one of the following IP Remote Access Case Study Configure the portsCreate user table entries for the dial in users Create a user table entry for the dialback userSave your work and reset the ports Connecting to the NETServer IPX Remote Access Create User Table entries for the dial in users LAN-to-LAN Routing Setup for NETServer Routing OverviewChapter LAN-to-LAN Routing IPX routing LAN-to-LAN Routing An Introduction to NETServer Routing NETServer RoutingLAN-to-LAN Routing Static vs. Dynamic Routes How RIP Dynamically Builds the Routing TableHow Packets are Routed Establishing Connections to Remote GatewaysRouting Procedure PAP/CHAP Authentication PAP Password Authentication ProtocolChap Setup for the NETServer Chap Challenge Example LAN-to-LAN Routing Detailed Setup Configuring the PortCreating a Dial-Out Group Set Required Location Parameters Adding a Remote Device to the Location TableCreate a new location table entry This is the remote device’s IP address Set location location name netmask netmask Dial Group Number Multiple lines for a single connection Maximum Ports Create a Dial Script Set location Chicago script 1 atds slot#\r Connect Tell the NETServer about the Remote Device Adding the Remote Device to the User TableCreate a User Table Entry Set user user name protocol ppp slip Set netuser user name compression on off LAN-to-LAN Routing Case Study Setting Up NETServer a Add netuser nsb password xyzabcSetting Up NETServer B Now, save your work and reset the ports Testing the Connection Connecting to NETServer a from NETServer B What If I Don’t Want to Use Chap Authentication?TCP/IP Modem Sharing Configure the port as a host deviceChapter Talking to the Modems Assign the modem a TCP port numberSave your work and reset the port Turn modem control carrier detect offImplementing Security with Host Device Dial Out Configuring modems as Unix pseudo TTYs Talking to the Modems Add a New Initialization Script Modem Initialization ScriptsHow To Assign Text to an Initialization ScriptDisplaying an Initialization Script Use an Existing Initialization ScriptDelete an Initialization Script Default initialization string Initialization Script ExampleSending AT commands to the modems Talking to the Modems Packet Filters Chapter Packet FiltersPacket Filters Types of Filters Packet Filters and the NETServerInput filters vs. Output filters Information SourcesAdding Packet Filters Input filters vs. Output filters Name Filter Rule FormatRule Type Options Rule NumberPermit or Deny TCP/IP packet filtering Destination Address TCP and UDP parameters Standard Port Numbers TCP UDPFiltering RIP messages FTP Packet FilteringClient opens a control channel FTP Example Filtering Icmp packets Type DescriptionIPX packet filtering IPX RulesDsthost SAP Rule Options Delete a Packet Filter Rule Editing Packet FiltersEdit a Packet Filter Delete a Packet FilterView a Packet Filter View the Packet Filter TableChanging the command prompt Chapter Administrative ToolsConfiguring the !root account Root AccessTelnet Access Port Nslogin, Rlogin and Telnet Commands Manually Connecting to a Remote SiteDial Command Troubleshooting Commands Viewing Debug messagesTurn off the output console by typing the following Ifconfig MTU Ping Ptrace Traceroute VersionShow command ShowShow arp Show flashShow memory Show netconnsShow netstat Show sap Show sessionsAdministrative Tools Command Reference Chapter Command ReferenceGlobal Configuration Save Changes View the Global Configuration TableGet help Assigned Address Default HostGlobal user parameters Connect MessageRandomize Hosts Default Gateways Global routing parametersDefault Route IP Address SpoofingProxy ARP NetBIOS Packet PropagationPAP Authentication System NameServer name Name ServiceService DNS Cache Reset Time-out Domain nameAlternate Radius Server Radius securityPrimary Radius Server Radius SecretRadius Accounting Syslog AccountingIcmp Logging Delete a Host Hosts TableAdd a Host View the Hosts TableAdd a Location to the Location Table Bring Up the List of CommandsLocation Table Change a Location’s ParametersView a Particular Location Save Location Table ChangesView the Location Table Location Table Parameters Connection TypeIPX Network IP AddressNetmask Compression ProtocolRouting Dial Group Maximum PortsIdle Time-out High Water MarkMTU PPP Async MapDial Script Output FilterInput Filter Send Reply LAN Port Net0 Configuration Reset the Network Interface CardEthernet Status View LAN Port ConfigurationLAN Port Parameters Configured Ethernet Media Interface AddressBroadcast Address IPX Frame Type Set net0 ifilter filter name Delete a netmask Netmask TableAdd a netmask View the netmask tableSave Port Configuration Change a Port’s ParametersTo view all of the S-ports, use the following command View the Ports TableIdle Port is idle View an Individual Port Host Device User LoginDetermining a Port’s Type Device Service Network Line Hangup Login MessageDial In Port Parameters Login Prompt Security Pass-Thru LoginAutolog Name User Login Port ParametersDialback Delay Host Login Service Terminal Type Hardwired Port Parameters IPX Network NumberSet s0 netmask netmask NETServer sends RIP information across Databits Serial Communications ParametersPort Speed StopbitsHost Override ParityFlow Control Modem ControlChange a Route’s Information Routes Table ConfigurationAdd a Route to the Routes Table View the IP Routes Table Delete a Routes Table EntrySave Routes Table Changes Viewing the IPX Routes Table Flag ParameterIP Parameters IPX Parameters Save the Snmp Table Changes Snmp TableDelete Snmp Hosts Enabling/Disabling SnmpRead Community Name Snmp Table ParametersView Snmp Table Write Community NameRead Hosts Write HostsUser Table Add a User to the User TableSave User Table Changes Change a User’s ParametersDelete a User View the User TableDialback Number Login User ParametersAccess Filter Set user name service rlogin telnet netdata portmux Command Reference Network User Parameters DialbackIPX connections require the PPP protocol NETServer sends RIP information to the dial Set user filter name ofilter filter name Command Reference Appendix a Technical Specifications 16 port NETServer HardwareMaximum Input Power Power RequirementsMaximum Output Power Typical Input PowerTechnical Specifications A-3 External Serial Port ConsoleEthernet Network Interface Card 10Base-T10Base-2 BNC SignalTechnical Specifications A-5 Isolated GNDTechnical Specifications Token Ring Network Interface Card Token Ring⎯STP ConnectorTechnical Specifications A-7 Token Ring⎯UTP Connector Technical Specifications A-9 NETServer Firmware SpecificationsAdministration Routing SupportClient Dial-up Support PPP Specific FeaturesIndustry Standards Support Technical Specifications A-11 Slip and PPP Client Software SupportTechnical Specifications IP Addressing Basics Appendix B Addressing SchemesIPX Addressing Basics Addressing Schemes B-1Addressing Schemes Address ClassesSubnetting Mask Binary Subnets Hosts Addressing Schemes B-3Reserved Addresses Supernetting Advanced TCP/IP Addressing Schemes B-5Cidr Each Supernet is treated as a single entity Addressing Schemes B-7 Step two Select a range of addresses for each supernet Addressing Schemes B-9 Supernetting and the NETServer Appendix C Software Download SDL Using a Direct Connection to a PCWhy Perform an SDL Software Download? Software Download C-1Loading the Software Download SDL Program Make Backup Copies of the NETServer FirmwareSoftware Installation Starting SDLSDL Command Syntax Software Download C-3Optional -d Parameter Filename PrefixesEntering SDL Mode Software Download C-5From the Windows Management Software Upgrading NETServer FirmwareUpgrading the Modem Firmware Software Download C-7For the Isdn NETServer, the file names are Error Messages Software Download C-9PC SDL program detected unknown command line argu- ments Software Download C-11 Invalid Control Word Software Download C-13 File you are trying to download is not a NETServer file Appendix D Boot Process Boot Process D-1Boot Process Syslog Accounting E-1 Using SyslogAppendix E Syslog Accounting Syslog System Message Format Syslog System MessagesSpotting Unused Ports Syslog AccountingSyslog System Message Examples Syslog Accounting E-3Someone has logged in as !root on port S16 Syslog Accounting E-5 Syslog Accounting Appendix F Obtaining RadiusSecurity a Centrally Managed User Table Setting Up Radius User Table Entries Authentication ItemsResponse Items Radius F-5 Framed-Netmask Radius F-7 User Types Radius F-9 Making NETServer talk to a Radius security server Chap authentication using Radius Radius accounting fields Acct-Delay-TimeRadius Accounting Acct-Status-TypeAcct-Session-Time Accounting ExamplesAcct-Authentic Radius Alphabetical Index IndexIndex Icmp MTU NIC PPP SAP Slip Index Index