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Configuring Network Address Translation Rules, Configuring a Source-NAT Access Rule

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Configuring Network Address Translation Rules Network Address Translation (NAT) is the process of modifying network address information when packets pass through a routing device. The routing device acts as an agent between the public (the Internet) and the private (local network), which allows translation of private network IP addresses to a public address space. Instant supports the NAT mechanism to allow a routing device to use the translation tables for mapping the private addresses into a single IP address. When packets are sent from this address, they appear to originate from the routing device. Similarly, if packets are sent to the private IP address, the destination address is translated as per the information stored in the translation tables of the routing device. Configuring a Source-NAT Access Rule The source-NAT action in access rules allows the user to override the routing profile entries. For example, when a routing profile is configured to use 0.0.0.0/0, the client traffic in L3 mode access on an SSID destined to the corporate network is sent to the tunnel. When an access rule is configured with Source-NAT action, the users can specify the service, protocol, or destination to which the source-NAT is applied. You can also configure source-based routing to allow client traffic on one SSID to reach the Internet through the corporate network, while the other SSID can be used as an alternate uplink. You can create an access rule to perform source-NAT by using the Instant UI or the CLI. In the Instant UI To configure a source-NAT access rule: 1. Navigate to the WLAN wizard or the Wired settings window: l To configure access rules for a WLAN SSID, in the Network tab, click New to create a new network profile or click edit to modify an existing profile. l To configure access rules for a wired profile, More > Wired. In the Wired window, click New under Wired Networks to create a new network or click Edit to select an existing profile. 2. Click the Access tab. 3. To configure access rules for the network, move the slider to the Network-based access control type. To configure access rules for user roles, move the slider to the Role-based access control type. 4. To create a new rule for the network, click New. To create an access rule for a user role, select the user role and then click New. The New Rule window is displayed. 5. In the New Rule window, perform the following steps: a. Select Access control from the Rule type drop-down list. b. Select Source-NAT from the Action drop-down list, to allow for making changes to the source IP address. c. Select a service from the list of available services. Default: All client traffic by default will be directed to the native vlan. Tunnel: All network-based traffic will be directed to the VPN tunnel. VLAN: All client based traffic will be directed to the specified uplink VLAN using the IP address of the interface that W-IAP has on that VLAN. If the interface is not found, this option has no effect. d. Select the required option from the Destination drop-down list. e. If required, enable other parameters such as Log, Blacklist, Classify media, Disable scanning, DSCP tag, and 802.1p priority. f. Click OK. 6. Click Finish. Dell Networking W-Series Instant 6.5.1.0-4.3.1.0 | User Guide Roles and Policies | 182

Section	Page
About this Guide	9
Intended Audience	9
Related Documents	9
Conventions	9
Contacting Dell	10
About Instant	11
Instant Overview	11
What is New in this Release	14
Setting up a W-IAP	16
Setting up Instant Network	16
Provisioning a W-IAP	17
Logging in to the Instant UI	19
Accessing the Instant CLI	20
Automatic Retrieval of Configuration	24
Managed Mode Operations	24
Prerequisites	24
Configuring Managed Mode Parameters	25
Verifying the Configuration	26
Instant User Interface	28
Login Screen	28
Main Window	29
Initial Configuration Tasks	56
Configuring System Parameters	56
Changing Password	62
Customizing W-IAP Settings	63
Modifying the W-IAP Host Name	63
Configuring Zone Settings on a W-IAP	63
Specifying a Method for Obtaining IP Address	64
Configuring External Antenna	65
Configuring Radio Profiles for a W-IAP	66
Configuring Uplink VLAN for a W-IAP	68
Changing the W-IAP Installation Mode	68
Changing USB Port Status	69
Master Election and Virtual Controller	70
Adding a W-IAP to the Network	71
Removing a W-IAP from the Network	72
VLAN Configuration	73
VLAN Pooling	73
Uplink VLAN Monitoring and Detection on Upstream Devices	73
IPv6 Support	74
IPv6 Notation	74
Enabling IPv6 Support for W-IAP Configuration	74
Firewall Support for IPv6	76
Debugging Commands	76
Wireless Network Profiles	77
Configuring Wireless Network Profiles	77
Configuring Fast Roaming for Wireless Clients	97
Configuring Modulation Rates on a WLAN SSID	100
Multi-User-MIMO	101
Management Frame Protection	102
Disabling Short Preamble for Wireless Client	102
Editing Status of a WLAN SSID Profile	102
Editing a WLAN SSID Profile	103
Deleting a WLAN SSID Profile	103
Wired Profiles	104
Configuring a Wired Profile	104
Assigning a Profile to Ethernet Ports	109
Editing a Wired Profile	109
Deleting a Wired Profile	110
Link Aggregation Control Protocol	110
Understanding Hierarchical Deployment	111
Captive Portal for Guest Access	113
Understanding Captive Portal	113
Configuring a WLAN SSID for Guest Access	114
Configuring Wired Profile for Guest Access	120
Configuring Internal Captive Portal for Guest Network	122
Configuring External Captive Portal for a Guest Network	125
Configuring Facebook Login	131
Configuring Guest Logon Role and Access Rules for Guest Users	132
Configuring Captive Portal Roles for an SSID	134
Configuring Walled Garden Access	137
Authentication and User Management	139
Managing W-IAP Users	139
Supported Authentication Methods	143
Supported EAP Authentication Frameworks	145
Configuring Authentication Servers	146
Understanding Encryption Types	160
Configuring Authentication Survivability	161
Configuring 802.1X Authentication for a Network Profile	163
Enabling 802.1X Supplicant Support	165
Configuring MAC Authentication for a Network Profile	166
Configuring MAC Authentication with 802.1X Authentication	168
Configuring MAC Authentication with Captive Portal Authentication	170
Configuring WISPr Authentication	171
Blacklisting Clients	172
Uploading Certificates	175
Roles and Policies	178
Firewall Policies	178
Content Filtering	191
Configuring User Roles	195
Configuring Derivation Rules	197
Using Advanced Expressions in Role and VLAN Derivation Rules	203
DHCP Configuration	207
Configuring DHCP Scopes	207
Configuring the Default DHCP Scope for Client IP Assignment	214
Configuring Time-Based Services	217
Time Range Profiles	217
Configuring a Time Range Profile	217
Applying a Time Range Profile to a WLAN SSID	218
Verifying the Configuration	219
Dynamic DNS Registration	221
Enabling Dynamic DNS	221
Configuring Dynamic DNS Updates for Clients	222
Verifying the Configuration	223
VPN Configuration	224
Understanding VPN Features	224
Configuring a Tunnel from a W-IAP to a Mobility Controller	225
Configuring Routing Profiles	236
IAP-VPN Deployment	238
Understanding IAP-VPN Architecture	238
Configuring W-IAP and Controller for IAP-VPN Operations	241
Adaptive Radio Management	249
ARM Overview	249
Configuring ARM Features on a W-IAP	250
Configuring Radio Settings	256
Deep Packet Inspection and Application Visibility	261
Deep Packet Inspection	261
Enabling Application Visibility	261
Application Visibility	262
Enabling URL Visibility	267
Configuring ACL Rules for Application and Application Categories	267
Configuring Web Policy Enforcement Service	270
Voice and Video	273
Wi-Fi Multimedia Traffic Management	273
Media Classification for Voice and Video Calls	276
Enabling Enhanced Voice Call Tracking	277
Services	279
Configuring AirGroup	279
Configuring a W-IAP for RTLS Support	288
Configuring a W-IAP for Analytics and Location Engine Support	289
Managing BLE Beacons	290
Clarity Live	291
Configuring OpenDNS Credentials	293
Integrating a W-IAP with Palo Alto Networks Firewall	293
Integrating a W-IAP with an XML API Interface	295
CALEA Integration and Lawful Intercept Compliance	298
Cluster Security	304
Overview	304
Enabling Cluster Security	305
Cluster Security Debugging Logs	305
Verifying the Configuration	306
W-IAP Management and Monitoring	307
Managing a W-IAP from W-AirWave	307
Uplink Configuration	318
Uplink Interfaces	318
Uplink Preferences and Switching	323
Intrusion Detection	328
Detecting and Classifying Rogue W-IAPs	328
OS Fingerprinting	328
Configuring Wireless Intrusion Protection and Detection Levels	329
Configuring IDS	334
Mesh W-IAP Configuration	335
Mesh Network Overview	335
Setting up Instant Mesh Network	336
Configuring Wired Bridging on Ethernet 0 for Mesh Point	336
Mobility and Client Management	338
Layer-3 Mobility Overview	338
Configuring L3-Mobility	339
Spectrum Monitor	341
Understanding Spectrum Data	341
Configuring Spectrum Monitors and Hybrid W-IAPs	347
W-IAP Maintenance	349
Upgrading a W-IAP	349
Backing up and Restoring W-IAP Configuration Data	352
Converting a W-IAP to a Remote AP and Campus AP	353
Resetting a Remote AP or Campus AP to a W-IAP	359
Rebooting the W-IAP	359
Monitoring Devices and Logs	361
Configuring SNMP	361
Configuring a Syslog Server	365
Configuring TFTP Dump Server	366
Running Debug Commands	367
Uplink Bandwidth Monitoring	371
Hotspot Profiles	373
Understanding Hotspot Profiles	373
Configuring Hotspot Profiles	375
Sample Configuration	386
ClearPass Guest Setup	389
Configuring ClearPass Guest	389
Verifying ClearPass Guest Setup	392
Troubleshooting	392
IAP-VPN Deployment Scenarios	394
Scenario 1—IPsec: Single Datacenter Deployment with No Redundancy	395
Scenario 2—IPsec: Single Datacenter with Multiple Controllers for Redundancy	399
Scenario 3—IPsec: Multiple Datacenter Deployment with Primary and Backup Cont...	403
Scenario 4—GRE: Single Datacenter Deployment with No Redundancy	408
Glossary	411
Acronyms and Abbreviations	416

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Configuring Network Address Translation Rules

Network Address Translation (NAT) is the process of modifying network address information when packets

pass through a routing device. The routing device acts as an agent between the public (the Internet) and the

private (local network), which allows translation of private network IP addresses to a public address space.

Instant supports the NAT mechanism to allow a routing device to use the translation tables for mapping the

private addresses into a single IP address. When packets are sent from this address, they appear to originate

from the routing device. Similarly, if packets are sent to the private IP address, the destination address is

translated as per the information stored in the translation tables of the routing device.

Configuring a Source-NAT Access Rule

The source-NAT action in access rules allows the user to override the routing profile entries. For example, when

a routing profile is configured to use 0.0.0.0/0, the client traffic in L3 mode access on an SSID destined to the

corporate network is sent to the tunnel. When an access rule is configured with

Source-NAT

action, the users

can specify the service, protocol, or destination to which the source-NAT is applied.

You can also configure source-based routing to allow client traffic on one SSID to reach the Internet through

the corporate network, while the other SSID can be used as an alternate uplink. You can create an access rule to

perform source-NAT by using the Instant UI or the CLI.

In the Instant UI

To configure a source-NAT access rule:

1. Navigate to the WLAN wizard or the Wired settings window:

To configure access rules for a WLAN SSID, in the

Network

tab, click

New

to create a new network

profile or click

edit

to modify an existing profile.

To configure access rules for a wired profile,

More > Wired

. In the

Wired

window, click

New

under

Wired Networks

to create a new network or click

Edit

to select an existing profile.

2. Click the

Access

tab.

3. To configure access rules for the network, move the slider to the

Network-based

access control type. To

configure access rules for user roles, move the slider to the

Role-based

access control type.

4. To create a new rule for the network, click

New

. To create an access rule for a user role, select the user role

and then click

New

. The

New Rule

window is displayed.

5. In the

New Rule

window, perform the following steps:

Select

Access control

from the

Rule type

drop-down list.

b. Select

Source-NAT

from the

Action

drop-down list, to allow for making changes to the source IP

address.

Select a service from the list of available services.

Default

: All client traffic by default will be directed to the native vlan.

Tunnel

: All network-based traffic will be directed to the VPN tunnel.

VLAN

: All client based traffic will be directed to the specified uplink VLAN using the IP address of the

interface that W-IAP has on that VLAN. If the interface is not found, this option has no effect.

d. Select the required option from the

Destination

drop-down list.

If required, enable other parameters such as

Log

Blacklist

Classify media

Disable scanning

DSCP

tag

, and

802.1p priority

Click

6. Click

Finish

Dell Networking W-Series Instant 6.5.1.0-4.3.1.0 | User Guide

Roles and Policies |

182