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NETServer/8 NETServer/16
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NETServer/16
NETServer/8
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Troubleshooting
Specs
Install
Error messages
Signal
Password
Port Default
Dialback Delay
Login
Administrative Tools
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E N T E R P R I S E N E T W O R K H U B S Y S T E M
NETServer/8
NETServer/16
Version
3.1
Command Reference
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Contents
NETServer/8 NETServer/16
Page
Table of Contents
Network Dial-in Access
Reference Section
Administrative Tools
Limited Warranty
Warranty and Service
Technical Support
Service and Support
Vii
Viii
We welcome your suggestions for better documentation
What’s New with Release 3.1?
Chapter Overview
Additional Software Enhancements
Overview
IP Address Spoofing
Netmask Table
Accounting Servers
Accounting Server Support
Randomized Hosts
Multiple Name Servers
Radius Accounting and ANI/DNIS
Icmp Message Logging
New Modem Port Features
NETServer Overview
IP Modem Sharing
How do I get there from here?
Security
Administrative Utilities
System Administrator Requirements
Chapter Basic Installation
Basic Installation
TCP/IP Reference Material
Accessing the Command Line
Getting Started
First step for IPX or IP/IPX networks
Getting the LAN port up and running
Basic Installation
IP Configuration
You must also set the Broadcast Address. Type the following
Ethernet802.3 ethernet802.2 ethernet802.2II ethernetII
IPX Configuration
Final Steps
Password
Recommended Global Configuration
IP and IPX Default Gateways
To set the IP gateway, type the following
Save your work
Name Service
Basic Installation
How to Setup Applications
Chapter Configuration Overview
Configuration Overview
Application Section
Where do I go from here?
Commands are not case sensitive
Command Line
You can abbreviate commands
Separate a parameter and its value by a space
Reboot when necessary
Reset any ports you have changed
How to log out of the command line
Save your changes
Quick Command Overview
Global Configuration
Overview of configurable tables
Hosts Table
Net0 LAN Port Configuration
Initialization Script Configuration
Location Table
Netmasks Table
Packet Filter Table
Port Type
Port Configuration
Routes Table
Snmp Configuration
User Table
Configuration Overview
Terminal or Workstation Setup
Chapter IP Terminal Server Setup
IP Terminal Server Setup
NETServer Terminal Server Setup Overview
Global Default
Port Default
User Table
Configuring a Port
Terminal Server Detailed Setup
Set the port type to User Login
Set the port’s security Pass-Thru Login
Create default user settings for the port
Port Default Login Service
Optional Friendly Stuff
Save sport #
Adding a Remote User to the User Table
Configure the user
Add the user to the User Table
Login Service
Configure for dialback use?
Example
IP Terminal Server Case Studies
NETServer will use ports 6, 7, and 8 for this application
Save your work and reset all the ports
Example
IP Terminal Server Setup
Dial-in User Setup
Chapter Network Dial In Access
Network Dial In Access
Prework
NETServer Setup for Network Dial-In Overview
Configuration
NETServer Dial-In Detailed Setup
Dialback Users on this Port?
Save the changes to flash memory
Normal or dialback user?
Create a new 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
Configure the ports
IP Remote Access Case Study
Create a user table entry for the dialback user
Create user table entries for the dial in users
Save your work and reset the ports
Connecting to the NETServer
IPX Remote Access
Create User Table entries for the dial in users
Chapter LAN-to-LAN Routing
Setup for NETServer Routing Overview
LAN-to-LAN Routing
IPX routing
LAN-to-LAN Routing
NETServer Routing
An Introduction to NETServer Routing
LAN-to-LAN Routing
How RIP Dynamically Builds the Routing Table
Static vs. Dynamic Routes
Establishing Connections to Remote Gateways
How Packets are Routed
Routing Procedure
PAP Password Authentication Protocol
PAP/CHAP Authentication
Chap Setup for the NETServer
Chap Challenge Example
Configuring the Port
LAN-to-LAN Routing Detailed Setup
Creating a Dial-Out Group
Create a new location table entry
Adding a Remote Device to the Location Table
Set Required Location Parameters
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
Create a User Table Entry
Adding the Remote Device to the User Table
Tell the NETServer about the Remote Device
Set user user name protocol ppp slip
Set netuser user name compression on off
LAN-to-LAN Routing Case Study
Add netuser nsb password xyzabc
Setting Up NETServer a
Setting Up NETServer B
Now, save your work and reset the ports
Testing the Connection
What If I Don’t Want to Use Chap Authentication?
Connecting to NETServer a from NETServer B
Chapter Talking to the Modems
Configure the port as a host device
TCP/IP Modem Sharing
Assign the modem a TCP port number
Turn modem control carrier detect off
Save your work and reset the port
Implementing Security with Host Device Dial Out
Configuring modems as Unix pseudo TTYs
Talking to the Modems
How To
Modem Initialization Scripts
Add a New Initialization Script
Assign Text to an Initialization Script
Delete an Initialization Script
Use an Existing Initialization Script
Displaying an Initialization Script
Initialization Script Example
Default initialization string
Sending AT commands to the modems
Talking to the Modems
Packet Filters
Chapter Packet Filters
Packet Filters
Packet Filters and the NETServer
Types of Filters
Information Sources
Input filters vs. Output filters
Adding Packet Filters
Input filters vs. Output filters
Rule Type
Filter Rule Format
Name
Permit or Deny
Rule Number
Options
TCP/IP packet filtering
Destination Address
TCP and UDP parameters
TCP UDP
Standard Port Numbers
FTP Packet Filtering
Filtering RIP messages
Client opens a control channel
FTP Example
Type Description
Filtering Icmp packets
IPX Rules
IPX packet filtering
Dsthost
SAP Rule Options
Edit a Packet Filter
Editing Packet Filters
Delete a Packet Filter Rule
Delete a Packet Filter
View the Packet Filter Table
View a Packet Filter
Configuring the !root account
Chapter Administrative Tools
Changing the command prompt
Root Access
Telnet Access Port
Dial Command
Manually Connecting to a Remote Site
Nslogin, Rlogin and Telnet Commands
Viewing Debug messages
Troubleshooting Commands
Turn off the output console by typing the following
Ifconfig
MTU
Ping
Ptrace
Version
Traceroute
Show
Show command
Show flash
Show arp
Show netconns
Show memory
Show netstat
Show sessions
Show sap
Administrative Tools
Global Configuration
Chapter Command Reference
Command Reference
Get help
View the Global Configuration Table
Save Changes
Global user parameters
Default Host
Assigned Address
Connect Message
Randomize Hosts
Global routing parameters
Default Gateways
IP Address Spoofing
Default Route
PAP Authentication
NetBIOS Packet Propagation
Proxy ARP
System Name
Service
Name Service
Server name
Domain name
DNS Cache Reset Time-out
Primary Radius Server
Radius security
Alternate Radius Server
Radius Secret
Syslog Accounting
Radius Accounting
Icmp Logging
Add a Host
Hosts Table
Delete a Host
View the Hosts Table
Location Table
Bring Up the List of Commands
Add a Location to the Location Table
Change a Location’s Parameters
View the Location Table
Save Location Table Changes
View a Particular Location
Connection Type
Location Table Parameters
Netmask
IP Address
IPX Network
Routing
Protocol
Compression
Maximum Ports
Dial Group
High Water Mark
Idle Time-out
PPP Async Map
MTU
Input Filter
Output Filter
Dial Script
Send Reply
Reset the Network Interface Card
LAN Port Net0 Configuration
LAN Port Parameters
View LAN Port Configuration
Ethernet Status
Interface Address
Configured Ethernet Media
Broadcast Address
IPX Frame Type
Set net0 ifilter filter name
Add a netmask
Netmask Table
Delete a netmask
View the netmask table
Change a Port’s Parameters
Save Port Configuration
View the Ports Table
To view all of the S-ports, use the following command
Idle Port is idle
View an Individual Port
Determining a Port’s Type
User Login
Host Device
Device Service
Network
Dial In Port Parameters
Login Message
Line Hangup
Security Pass-Thru Login
Login Prompt
Dialback Delay
User Login Port Parameters
Autolog Name
Host
Login Service
Terminal Type
IPX Network Number
Hardwired Port Parameters
Set s0 netmask netmask
NETServer sends RIP information across
Port Speed
Serial Communications Parameters
Databits
Stopbits
Flow Control
Parity
Host Override
Modem Control
Add a Route to the Routes Table
Routes Table Configuration
Change a Route’s Information
Save Routes Table Changes
Delete a Routes Table Entry
View the IP Routes Table
Flag Parameter
Viewing the IPX Routes Table
IP Parameters
IPX Parameters
Delete Snmp Hosts
Snmp Table
Save the Snmp Table Changes
Enabling/Disabling Snmp
View Snmp Table
Snmp Table Parameters
Read Community Name
Write Community Name
Write Hosts
Read Hosts
Add a User to the User Table
User Table
Delete a User
Change a User’s Parameters
Save User Table Changes
View the User Table
Access Filter
Login User Parameters
Dialback Number
Set user name service rlogin telnet netdata portmux
Command Reference
Dialback
Network User Parameters
IPX connections require the PPP protocol
NETServer sends RIP information to the dial
Set user filter name ofilter filter name
Command Reference
16 port NETServer Hardware
Appendix a Technical Specifications
Maximum Output Power
Power Requirements
Maximum Input Power
Typical Input Power
External Serial Port Console
Technical Specifications A-3
10Base-T
Ethernet Network Interface Card
Technical Specifications A-5
Signal
10Base-2 BNC
Isolated GND
Technical Specifications
Technical Specifications A-7
Token Ring⎯STP Connector
Token Ring Network Interface Card
Token Ring⎯UTP Connector
Administration
NETServer Firmware Specifications
Technical Specifications A-9
Routing Support
Industry Standards Support
PPP Specific Features
Client Dial-up Support
Slip and PPP Client Software Support
Technical Specifications A-11
Technical Specifications
IPX Addressing Basics
Appendix B Addressing Schemes
IP Addressing Basics
Addressing Schemes B-1
Subnetting
Address Classes
Addressing Schemes
Addressing Schemes B-3
Mask Binary Subnets Hosts
Reserved Addresses
Addressing Schemes B-5
Supernetting Advanced TCP/IP
Cidr 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
Why Perform an SDL Software Download?
SDL Using a Direct Connection to a PC
Appendix C Software Download
Software Download C-1
Software Installation
Make Backup Copies of the NETServer Firmware
Loading the Software Download SDL Program
Starting SDL
Software Download C-3
SDL Command Syntax
Filename Prefixes
Optional -d Parameter
Software Download C-5
Entering SDL Mode
Upgrading NETServer Firmware
From the Windows Management Software
Software Download C-7
Upgrading the Modem Firmware
For the Isdn NETServer, the file names are
Software Download C-9
Error Messages
PC 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
Boot Process D-1
Appendix D Boot Process
Boot Process
Appendix E Syslog Accounting
Using Syslog
Syslog Accounting E-1
Spotting Unused Ports
Syslog System Messages
Syslog System Message Format
Syslog Accounting
Syslog Accounting E-3
Syslog System Message Examples
Someone has logged in as !root on port S16
Syslog Accounting E-5
Syslog Accounting
Obtaining Radius
Appendix F
Security a Centrally Managed User Table
Authentication Items
Setting Up Radius User Table Entries
Response 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
Acct-Delay-Time
Radius accounting fields
Acct-Status-Type
Acct-Authentic
Accounting Examples
Acct-Session-Time
Radius
Index
Alphabetical Index
Index
Icmp
MTU
NIC
PPP
SAP
Slip
Index
Index
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