Nomadix Access Gateway User manual

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Access Gateway
Copyright © 2014 Nomadix, Inc. All Rights Reserved.
This product also includes software developed by: The University of California,
Berkeley and its contributors; Carnegie Mellon University, Copyright © 1998 by
Carnegie Mellon University All Rights Reserved; Go Ahead Software, Inc., Copyright
© 1999 Go Ahead Software, Inc. All Rights Reserved; Livingston Enterprises, Inc.,
Copyright © 1992 Livingston Enterprises, Inc. All Rights Reserved; The Regents of the
University of Michigan and Merit Network, Inc., Copyright 1992 – 1995 All Rights
Reserved; and includes source code covered by the Mozilla Public License, Version 1.0
and OpenSSL.
This User Guide is protected by U.S. copyright laws. You may not transmit, copy,
modify, or translate this manual, or reduce it or any part of it to any machine readable
form, without the express permission of the copyright holder.

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The symbol, and Nomadix Service Engine®are registered
trademarks of Nomadix, Inc. All other trademarks and brand names are marks of their
respective holders.
Product Information
Telephone: [phone]
Fax: [phone]
For technical support information, see the Appendix in this User Guide.
Patent Information
Please see the Nomadix website for a list of US and foreign patents covering this product
release.
Disclaimer
Nomadix, Inc. makes no warranty, either express or implied, including but not limited to any
implied warranties of merchantability and fitness for a particular purpose, regarding the
product described herein. In no event shall Nomadix, Inc. be liable to anyone for special,
collateral, incidental, or consequential damages in connection with or arising from the use of
Nomadix, Inc. products.
Write your product serial number in this box:

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WARNING
Risk of electric shock; do not open; no user-serviceable
parts inside.
AVERTISSEMENT
Risque de choc electrique; ne pas ouvrir; ne pas tenter de
demontre l’appareil.
WARNUNG
Nicht öffnen; elektrische Bauteile.
AVISO
Riesgo de shock eléctrico. No abrir. No hay piezas
configurables dentro.
CAUTION
Read the instruction manual prior to operation.
ATTENTION
Lire le mode d’emploi avant utilisation.
ACHTUNG
Lesen Sie das Handbuch bevor Sie das Gerät in Betrieb
nehmen.
PRECAUCIÓN
Leer el manual de instrucciones antes de poner en
marcha el equipo.
30851 Agoura Rd, Suite 102, Agoura Hills, CA 91301 USA (head office)

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v
Table of Contents
Chapter 1: Introduction .................................................................................................. 1
About this Guide....................................................................................................................... 1
Organization.............................................................................................................................. 2
Welcome to the Access Gateway.............................................................................................. 3
Product Configuration and Licensing ............................................................................... 3
Key Features and Benefits ........................................................................................................ 4
Platform Reliability............................................................................................................ 4
Local Content and Services ............................................................................................... 4
Transparent Connectivity .................................................................................................. 5
Billing Enablement ............................................................................................................ 6
Access Control and Authentication.................................................................................... 6
Security .............................................................................................................................. 6
5-Step Service Branding .................................................................................................... 6
NSE Core Functionality............................................................................................................ 8
Access Control................................................................................................................... 9
Bandwidth Management .................................................................................................. 10
Billing Records Mirroring ............................................................................................... 10
Bridge Mode .................................................................................................................... 10
Class-Based Queueing..................................................................................................... 11
Command Line Interface ................................................................................................. 13
Credit Card...................................................................................................................... 14
Dynamic Address Translation™...................................................................................... 14
Dynamic Transparent Proxy............................................................................................ 14
End User Licensee Count ................................................................................................ 14
External Web Server Mode.............................................................................................. 15
Home Page Redirect........................................................................................................ 15
iNAT™............................................................................................................................. 15
Information and Control Console.................................................................................... 16
Initial NSE Configuration................................................................................................ 17
Internal Web Server......................................................................................................... 17
International Language Support...................................................................................... 17
IP Upsell.......................................................................................................................... 18
Load Balancing................................................................................................................ 18
Logout Pop-Up Window .................................................................................................. 18
MAC Filtering.................................................................................................................. 18
Multi-Level Administration Support................................................................................ 19
Multi-WAN Interface Management.................................................................................. 19
NTP Support .................................................................................................................... 19
Portal Page Redirect ....................................................................................................... 19

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RADIUS-driven Auto Configuration................................................................................ 20
RADIUS Client................................................................................................................. 20
RADIUS Proxy ................................................................................................................. 20
Realm-Based Routing....................................................................................................... 21
Remember Me and RADIUS Re-Authentication............................................................... 21
Secure Management......................................................................................................... 21
Secure Socket Layer (SSL) ............................................................................................... 22
Secure XML API............................................................................................................... 23
Session Rate Limiting (SRL)............................................................................................. 23
Session Termination Redirect........................................................................................... 23
Smart Client Support........................................................................................................ 23
SNMP Nomadix Private MIB........................................................................................... 23
Static Port Mapping ......................................................................................................... 24
Tri-Mode Authentication.................................................................................................. 24
URL Filtering................................................................................................................... 24
Walled Garden ................................................................................................................. 24
Web Management Interface ............................................................................................. 25
Optional NSE Modules............................................................................................................ 26
Load Balancing ................................................................................................................ 26
Hospitality Module........................................................................................................... 26
PMS Integration............................................................................................................... 27
High Availability Module................................................................................................. 27
Network Architecture (Sample) .............................................................................................. 28
Multiple Unit Clustering.......................................................................................................... 29
Identifying the Resident Gateway in a Cluster Environment........................................... 29
Load Balancing and Link Failover.......................................................................................... 31
Definitions and Concepts ................................................................................................. 31
Load Balancing across Multiple Low Speed Links.......................................................... 34
Failover to Standby ISP Link........................................................................................... 34
Separate Guest HSIA and Admin ISP Links, with Failover Between Each ISP Link ...... 35
Guest HSIA Failover Only, to Admin Network ................................................................ 36
Sharing Guest HSIA Network and Hotel Admin Network Among Multiple ISP Links .... 37
Load Balancing With Users Connected to a Preferred ISP Link..................................... 38
Online Help (WebHelp) .......................................................................................................... 40
Notes, Cautions, and Warnings............................................................................................... 40
Chapter 2: Installing the Access Gateway.................................................................... 41
Installation Workflow.............................................................................................................. 41
Powering Up the System......................................................................................................... 43
User Manual and Documentation............................................................................................ 43
Accessory Box Contents ................................................................................................... 44
Start Here................................................................................................................................. 44
Configuration........................................................................................................................... 46
Step 1a: Static WAN IP Configuration............................................................................. 46

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Step 1b: DHCP Client Configuration.............................................................................. 48
Step 1c: PPPoE Dynamic IP Client Configuration......................................................... 49
Step 1d: PPPoE Static IP Client Configuration.............................................................. 50
Step 2: Entering Your Location Information.................................................................. 50
Step 3: Retrieving Your License Key .............................................................................. 51
Step 4: Configuring the System....................................................................................... 51
Step 5: Configuring AG DHCP Server Settings .............................................................. 52
The Management Interfaces (CLI and Web) .......................................................................... 53
Making Menu Selections and Inputting Data with the CLI ............................................. 54
Menu Organization (Web Management Interface).......................................................... 54
Inputting Data – Maximum Character Lengths............................................................... 56
Online Documentation and Help..................................................................................... 57
Quick Reference Guide........................................................................................................... 57
Establishing the Start Up Configuration................................................................................. 58
Assigning Login User Names and Passwords ................................................................. 59
Setting the SNMP Parameters (optional) ........................................................................ 60
Configuring the WAN interface ....................................................................................... 61
Enabling the Logging Options (recommended)............................................................... 62
Assigning the Location Information and IP Addresses ................................................... 65
Logging Out and Powering Down the System........................................................................ 67
Connecting the Access Gateway to the Customer’s Network ................................................ 67
Establishing the Basic Configuration for Subscribers ............................................................ 68
Setting the DHCP Options............................................................................................... 69
DHCP Options from RFC 2132....................................................................................... 70
DHCP Dynamic Enable and Disable .............................................................................. 73
Setting the DNS Options.................................................................................................. 74
Archiving Your Configuration Settings.................................................................................. 76
Installing the Nomadix Private MIB....................................................................................... 76
Chapter 3: System Administration............................................................................... 79
Choosing a Remote Connection.............................................................................................. 79
Using the Web Management Interface (WMI)................................................................. 80
Using an SNMP Manager................................................................................................ 81
Using a Telnet Client....................................................................................................... 81
Logging In............................................................................................................................... 82
About Your Product License................................................................................................... 82
Configuration Menu................................................................................................................ 82
Defining the AAA Services {AAA} ................................................................................... 82
Establishing Secure Administration {Access Control}.................................................... 92
Defining Automatic Configuration Settings {Auto Configuration} ................................. 95
Setting Up Bandwidth Management {Bandwidth Management}..................................... 98
Group Bandwidth Limit Policy...................................................................................... 100
Group Bandwidth Limit Policy – Operation.................................................................. 100

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Group Bandwidth Limit Policy – Enable....................................................................... 101
Group Bandwidth Limit Policy – Current Table............................................................ 102
Establishing Billing Records “Mirroring” {Bill Record Mirroring} ............................ 103
Class-Based Queueing ................................................................................................... 105
Clustering {Clustering}.................................................................................................. 108
Configuring Destination HTTP Redirection {Destination HTTP Redirection}............. 109
Managing the DHCP service options {DHCP} ............................................................. 112
Enabling DNSSEC Support............................................................................................ 116
Managing the DNS Options {DNS}................................................................................ 117
Managing the Dynamic DNS Options {Dynamic DNS}................................................. 118
Ethernet Ports/WAN....................................................................................................... 120
Setting the Home Page Redirection Options {Home Page Redirect} ............................ 122
Enabling Intelligent Address Translation (iNAT™)...................................................... 123
Defining IPSec Tunnel Settings {IPSec} ........................................................................ 125
Load Balancing .............................................................................................................. 131
Establishing Your Location {Location} ......................................................................... 133
Managing the Log Options {Logging}........................................................................... 137
Enabling MAC Authentication {MAC Authentication}.................................................. 142
Assigning Passthrough Addresses (Passthrough Addresses)......................................... 143
Assigning a PMS Service {PMS}.................................................................................... 144
Setting Up Port Locations {Port-Location}................................................................... 151
Setting up Quality of Service {QoS}............................................................................... 157
Defining the RADIUS Client Settings {RADIUS Client}................................................ 158
Defining the RADIUS Proxy Settings {RADIUS Proxy}................................................ 163
Defining the Realm-Based Routing Settings {Realm-Based Routing}........................... 167
Managing SMTP Redirection {SMTP}........................................................................... 176
Managing the SNMP Communities {SNMP} ................................................................. 177
Enabling Dynamic Multiple Subnet Support (Subnets).................................................. 178
Displaying Your Configuration Settings {Summary}..................................................... 180
Setting the System Date and Time {Time}...................................................................... 181
Setting up Traffic Descriptors........................................................................................ 183
Setting Up URL Filtering {URL Filtering}.................................................................... 184
Selecting User Agent Filtering Settings......................................................................... 185
Zone Migration............................................................................................................... 186
Defining IPSec Tunnel Settings...................................................................................... 188
Network Info Menu............................................................................................................... 190
Displaying ARP Table Entries {ARP}............................................................................ 190
Displaying DAT Sessions {DAT} ................................................................................... 190
Displaying the Host Table {Hosts} ................................................................................ 191
Displaying ICMP Statistics {ICMP}.............................................................................. 192
Displaying the Network Interfaces {Interfaces}............................................................. 192
Interface Monitoring ...................................................................................................... 194
Displaying the IP Statistics {IP} .................................................................................... 195
Viewing IPSec Tunnel Status {IPSec}............................................................................ 196

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Viewing NAT IP Address Usage {NAT IP Usage}......................................................... 196
Displaying the Routing Tables {Routing}...................................................................... 197
Displaying the Routing Tables {Routing}...................................................................... 198
Displaying the Active IP Connections {Sockets}........................................................... 199
Displaying the Static Port Mapping Table {Static Port-Mapping}............................... 200
Displaying TCP Statistics {TCP}................................................................................... 201
Displaying UDP Statistics {UDP}................................................................................. 202
Port-Location Menu.............................................................................................................. 203
Adding and Updating Port-Location Assignments {Add} ............................................. 204
Deleting All Port-Location Assignments {Delete All}................................................... 207
Deleting Port-Location Assignments by Location {Delete by Location} ...................... 208
Deleting Port-Location Assignments by Port {Delete by Port}..................................... 208
Exporting Port-Location Assignments {Export}............................................................ 209
Finding Port-Location Assignments by Description {Find by Description}................. 210
Finding Port-Location Assignments by Location {Find by Location} .......................... 210
Finding Port-Location Assignments by Port {Find by Port}......................................... 211
Importing Port-Location Assignments {Import}............................................................ 213
Displaying the Port-Location Mappings {List}............................................................. 215
Subscriber Intra-Port Communication.......................................................................... 215
Subscriber Administration Menu.......................................................................................... 216
Adding Subscriber Profiles {Add}................................................................................. 216
Displaying Current Subscriber Connections {Current}................................................ 222
Deleting Subscriber Profiles by MAC Address {Delete by MAC}................................. 223
Deleting Subscriber Profiles by User Name {Delete by User}...................................... 224
Displaying the Currently Allocated DHCP Leases {DHCP Leases} ............................ 225
Deleting All Expired Subscriber Profiles {Expired} ..................................................... 225
Finding Subscriber Profiles by MAC Address {Find by MAC}..................................... 226
Finding Subscriber Profiles by User Name {Find by User}.......................................... 227
Listing Subscriber Profiles by MAC Address {List by MAC}........................................ 227
Listing Subscriber Profiles by User Name {List by User}............................................. 228
Viewing RADIUS Proxy Accounting Logs {RADIUS Session History}......................... 230
Displaying Current Profiles and Connections {Statistics}............................................ 231
Subscriber Interface Menu.................................................................................................... 231
Defining the Billing Options {Billing Options} ............................................................. 231
Setting Up the Information and Control Console {ICC Setup}..................................... 238
Defining Languages {Language Support}..................................................................... 245
Enable Serving of Local Web Pages {Local Web Server}............................................. 247
Defining the Subscriber’s Login UI {Login UI}............................................................ 249
Defining the Post Session User Interface (Post Session UI) ......................................... 253
Defining Subscriber UI Buttons {Subscriber Buttons}.................................................. 256
Defining Subscriber UI Labels {Subscriber Labels}..................................................... 257
Defining Subscriber Error Messages {Subscriber Errors} ........................................... 259
Defining Subscriber Messages {Subscriber Messages} ................................................ 261

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System Menu......................................................................................................................... 264
Adding an ARP Table Entry {ARP Add}........................................................................ 264
Deleting an ARP Table Entry {ARP Delete}.................................................................. 265
Adding and Deleting ARP Table Entries........................................................................ 265
Configurable Gateway ARP Refresh Interval................................................................ 266
Enabling the Bridge Mode Option {Bridge Mode}........................................................ 267
Exporting Configuration Settings to the Archive File {Export}..................................... 268
Importing the Factory Defaults {Factory}..................................................................... 269
Defining the Fail Over Options {Fail Over}.................................................................. 270
Viewing the History Log {History} ................................................................................ 271
Establishing ICMP Blocking Parameters {ICMP} ........................................................ 272
Importing Configuration Settings from the Archive File {Import}................................ 273
Establishing Login Access Levels {Login}..................................................................... 274
Defining the MAC Filtering Options {MAC Filtering}.................................................. 277
Utilizing Packet Capturing {Packet Capture} ............................................................... 278
Rebooting the System {Reboot}...................................................................................... 280
Routing Tables {Routing}............................................................................................... 280
Establishing Session Rate Limiting {Session Limit} ...................................................... 282
Adding Static Ports {Static Port-Mapping Add}............................................................ 283
Deleting Static Ports {Static Port-Mapping Delete}...................................................... 284
Blocking a Subscriber Interface {Subscriber Interfaces} .............................................. 285
Updating the Access Gateway Firmware {Upgrade} .................................................... 286
Chapter 4: The Subscriber Interface.......................................................................... 287
Overview ............................................................................................................................... 287
Authorization and Billing...................................................................................................... 288
The AAA Structure.......................................................................................................... 289
Process Flow (AAA)....................................................................................................... 292
Internal and External Web Servers................................................................................ 293
Language Support .......................................................................................................... 293
Home Page Redirection ................................................................................................. 293
Subscriber Management........................................................................................................ 294
Subscriber Management Models.................................................................................... 294
Configuring the Subscriber Management Models ......................................................... 295
Information and Control Console (ICC)................................................................................ 296
ICC Pop-Up Window ..................................................................................................... 296
Logout Console .............................................................................................................. 297
Chapter 5: Quick Reference Guide............................................................................. 299
Web Management Interface (WMI) Menus .......................................................................... 299
Configuration Menu Items ............................................................................................. 300
Network Info Menu Items............................................................................................... 303
Port-Location Menu Items ............................................................................................. 304

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Subscriber Administration Menu Items ......................................................................... 306
Subscriber Interface Menu Items................................................................................... 306
System Menu Items......................................................................................................... 307
Alphabetical Listing of Menu Items (WMI)......................................................................... 311
Default (Factory) Configuration Settings ............................................................................. 313
Product Specifications........................................................................................................... 315
Sample AAA Log.................................................................................................................. 332
Message Definitions (AAA Log) .................................................................................... 332
Sample SYSLOG Report ...................................................................................................... 333
Sample History Log .............................................................................................................. 334
Keyboard Shortcuts............................................................................................................... 335
HyperTerminal Settings........................................................................................................ 335
RADIUS Attributes............................................................................................................... 336
Authentication-Request.................................................................................................. 337
Authentication-Reply (Accept)....................................................................................... 337
Accounting-Request ....................................................................................................... 338
Selected Detailed Descriptions...................................................................................... 339
Nomadix Vendor Specific Attributes.............................................................................. 340
Setting Up the SSL Feature................................................................................................... 342
Prerequisites.................................................................................................................. 342
Obtain a Private Key File (cakey.pem) ......................................................................... 342
Installing Cygwin and OpenSSL on a PC...................................................................... 343
Private Key Generation ................................................................................................. 346
Create a Certificate Signing Request (CSR) File .......................................................... 349
Create a Public Key File (server.pem).......................................................................... 350
Setting Up Access Gateway for SSL Secure Login ........................................................ 353
Setting Up the Portal Page............................................................................................ 354
Mirroring Billing Records..................................................................................................... 355
Sending Billing Records................................................................................................. 355
XML Interface................................................................................................................ 356
Chapter 6: Troubleshooting........................................................................................ 359
General Hints and Tips ......................................................................................................... 359
Management Interface Error Messages................................................................................. 360
Common Problems................................................................................................................ 362
Appendix A: Technical Support................................................................................. 365
Contact Information.............................................................................................................. 365
Appendix B: Glossary of Terms.................................................................................. 367

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Introduction 1
Introduction
About this Guide
This User Guide provides information and procedures that will enable system administrators to
install, configure, manage, and use the Access Gateway product successfully and efficiently.
Use this guide to take full advantage of the Access Gateway’s functionality and features.
Refer to “Product Specifications” on page 315 for a list of Access Gateway Products that this
document supports.
The Nomadix Access Gateway hardware is configured and controlled by Nomadix Service
Engine (NSE) software. The NSE 7.4 is the last Software Release that supports the AG2300,
AG3100, and AG5500.
NSE 8.0 series software releases support the AG2400, AG5600, and AG5800.

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2 Introduction
Organization
This User Guide is organized into the following sections:
Chapter 1 – Introduction. The current chapter; an introduction to the features and benefits of
the Nomadix Access Gateway.
Chapter 2 – Installing the Access Gateway. Provides instructions for installing the Access
Gateway and establishing the start-up configuration.
Chapter 3– System Administration. Provides all the instructions and procedures necessary to
manage and administer the Access Gateway on the customer’s network, following a successful
installation.
Chapter 4– The Subscriber Interface. Provides an overview and sample scenario for the
Access Gateway’s subscriber interface. It also includes an outline of the authorization and
billing processes utilized by the system, and the Nomadix Information and Control Console.
Chapter 5 – Quick Reference Guide. Contains product reference information, organized by
topic and functionality. It also contains a full listing of all product configuration elements,
sorted alphabetically and by menu.
Chapter 6 – Troubleshooting. Provides information to help you resolve common hardware and
software problems. It also contains a list of error messages associated with the management
interface.
Technical Support. Informs you how to obtain technical support. Refer to Troubleshooting
before contacting Nomadix, Inc. directly.
Glossary of Terms. Provides an explanation of terms directly related to Nomadix product
technology. Glossary entries are organized alphabetically.
Index. The index is a valuable information search tool. Use the index to locate specific topics
and categories contained in this User Guide.

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Introduction 3
Welcome to the Access Gateway
The Access Gateway is a freestanding, fully featured network appliance that enables public
access service providers to offer broadband Internet connectivity to their customers.
The Access Gateway handles transparent connectivity, advanced security, policy-based traffic
shaping, and service placement supporting thousands of users simultaneously in a broadband
environment. The Access Gateway also offers a unique set of security and connectivity
features for deploying metro wireless 802.11 networks, including Mesh and WiMAX
technologies.
The Access Gateway yields a complete solution to a set of complex issues in the Enterprise,
Public-LAN, and Residential segments.
Product Configuration and Licensing
All Nomadix Access Gateway products are powered by our patented and patent-pending suite
of embedded software, called the Nomadix Service Engine™ (NSE). The Access Gateway
employs our NSE core software package and comes pre-packaged with the option to purchase
additional modules to expand the product’s functionality.
This User Guide covers all features and functionality provided with the NSE core package, as
well as additional optional modules. Your product license must support the optional NSE
modules if you want to take advantage of the expanded functionality. The following note will
preface procedures that directly relate to optional modules.
See also:
NSE Core Functionality
Optional NSE Modules
Access Gateway

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4 Introduction
Key Features and Benefits
The Access Gateway is a 1U high, free-standing or rack-mountable Access Gateway that
employs three fast Ethernet ports to interface with the router (one for network side) and the
aggregation equipment (two for subscriber side) within the network. It also incorporates an
RS232 serial port for connecting to a Property Management System (PMS) and for system
management and administration, while maintaining one billing relationship with their chosen
provider.
The Access Gateway enables a wide variety of network deployment options for different venue
types. For example:
Allows for flexible WAN Connectivity (T1/E1, Cable, xDSL, and ISDN).
Supports 802.11a/b/g and hybrid networks utilizing wired Ethernet.
Supports key requirements needed to be compliant with the Wi-Fi ZONE™ program.
Allows you to segment your existing network into public and private sections using
VLANs, then leverage your existing network investment to create new revenue
streams.
Enables you to provide Wi-Fi access as a billable service or as an amenity to augment
the main line of business for your venue.
Contains an advanced XML interface for accepting and processing XML commands,
allowing the implementation of a variety of service plans and offerings.
Offers three user-friendly ways of remote management—through a Web interface,
SNMP MIBs, and Telnet interfaces—allowing for scalable, large public access
deployments.
Provides capabilities for load balancing and fail-over management across multiple
ISPs.
Platform Reliability
The Access Gateway is designed as a network appliance, providing maximum uptime and
reliability unlike competitive offerings that use a server-based platform.
Local Content and Services
The Access Gateway’s Portal Page feature intercepts the user’s browser settings and directs
them to a designated Web site to securely sign up for service or log in if they have a pre-
existing account.
Allows the provider to present their customers with local services or have the user
sign up for service at zero expense.

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Introduction 5
Offers both pre and post authentication redirects of the user’s browser, providing
maximum flexibility in service branding.
Transparent Connectivity
Resolving configuration conflicts is difficult and time consuming for network users who are
constantly on the move, and costly to the solution provider. In fact, most users are reluctant to
make changes to their computer’s network settings and won’t even bother. This fact alone has
prevented the widespread deployment of broadband network services.
Our patented Dynamic Address Translation™ (DAT) functionality offers a true “plug and
play” solution by enabling a seamless and transparent experience and the tools to acquire new
customers on-site.
DAT greatly reduces provisioning and technical support costs and enables providers to deliver
an easy to use, customer-friendly service.

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6 Introduction
Billing Enablement
The Access Gateway supports billing plans using credit cards, scratch cards, or monthly
subscriptions, or direct billing to a hotel’s Property Management System (PMS) and can base
the billable event on a number of different parameters such as time, volume, IP address type, or
bandwidth.
Access Control and Authentication
The Access Gateway ensures that all traffic to the Internet is blocked until authentication has
been completed, creating an additional level of security in the network. Also, the Access
Gateway allows service providers to create their own unique “walled garden,” enabling users
to access only certain predetermined Web sites before they have been authenticated.
Nomadix simultaneously supports the secure browser-based Universal Access Method (UAM),
IEEE 802.1x, and Smart Clients for companies such as Adjungo Networks, Boingo Wireless,
GRIC and iPass. MAC-based authentication is also available.
Security
The patented iNAT™ (Intelligent Network Address Translation) feature creates an intelligent
mapping of IP Addresses and their associated VPN tunnels—by far the most reliable multi-
session VPN passthrough to be tested against diverse VPN termination servers from companies
such as Cisco, Checkpoint, Nortel and Microsoft. Nomadix’ iNAT feature allows multiple
tunnels to be established to the same VPN server, creating a seamless connection for all users
on the network.
The Access Gateway provides fine-grain management of DoS (Denial of Service) attacks
through its Session Rate Limiting (SRL) feature, and MAC filtering for improved network
reliability.
5-Step Service Branding
A network enabled with the Nomadix Access Gateway offers a 5-Step service branding
methodology for service providers and their partners, comprising:
1. Initial Flash Page branding.
2. Initial Portal Page Redirect (Pre-Authentication). Typically, this is used to redirect the user
to a venue-specific Welcome and Login page.
3. Home Page Redirect (Post-Authentication). This redirect page can be tailored to the
individual user (as part of the RADIUS Reply message, the URL is received by the NSE)
or set to re-display itself at freely configurable intervals.

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Introduction 7
4. The Information and Control Console (ICC) contains multiple opportunities for an
operator to display its branding or the branding of partners during the user’s session. As an
alternative to the ICC, a simple pop-up window provides the opportunity to display a
single logo.
5. The “Goodbye” page is a post-session page that can be defined either as a RADIUS VSA
or be driven by the Internal Web Server (IWS) in the NSE. Using the IWS option means
that this functionality is also available for other post-paid billing mechanisms (for
example, post-paid PMS).

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8 Introduction
NSE Core Functionality
Powering Nomadix’ family of Access Gateways, the Nomadix Service Engine (NSE) delivers
a full range of features needed to successfully deploy public access networks. These “core”
features solve issues of connectivity, security, billing, and roaming in a Wi-Fi public access
network.
The NSE’s core package of features includes:
Access Control
Bandwidth Management
Billing Records Mirroring
Bridge Mode
Class-Based Queueing
Command Line Interface
Credit Card
Dynamic Address Translation™
Dynamic Transparent Proxy
End User Licensee Count
External Web Server Mode
Home Page Redirect
iNAT™
Information and Control Console
Internal Web Server
International Language Support
IP Upsell
Logout Pop-Up Window
MAC Filtering
Multi-Level Administration Support
Multi-WAN Interface Management
NTP Support
Portal Page Redirect