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Configuring the Dynamic Access Policies Feature of the Security Appliance, Cisco Secure Desktop - asa

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Configuring, Enabling, and Using Other AnyConnect Features Chapter 6 Configuring AnyConnect Features Using CLI Changing Compression for Groups and Users To change compression for a specific group or user, use the svc compression command in the group-policy and username webvpn modes: svc compression {deflate | none} no svc compression {deflate | none} By default, for groups and users, SSL compression is set to deflate (enabled). To remove the svc compression command from the configuration and cause the value to be inherited from the global setting, use the no form of the command: The following example disables compression for the group-policy sales: hostname(config)# group-policy sales attributes hostname(config-group-policy)# webvpn hostname(config-group-webvpn)# svc compression none Note For compression to work, both the compression svc command (configured from global configuration mode) and the svc compression command (configured in group-policy and username webvpn modes) must be enabled. If either command is set to none or to the no form, compression is disabled. Configuring the Dynamic Access Policies Feature of the Security Appliance On the security appliance, you can configure authorization that addresses the variables of multiple group membership and endpoint security for VPN connections. There is no specific configuration of AnyConnect required to use dynamic access policies. For detailed information about configuring dynamic access policies, see Cisco ASDM User Guide, Cisco Security Appliance Command Line Configuration Guide, or Cisco Security Appliance Command Reference. Cisco Secure Desktop Support Cisco Secure Desktop validates the security of client computers requesting access to your SSL VPN, helps ensure they remain secure while they are connected, and attempts to remove traces of the session after they disconnect. The Cisco AnyConnect VPN Client supports the Secure Desktop functions of Cisco Secure Desktop for Windows 2000 and Windows XP. There is no specific configuration of AnyConnect required to use Secure Desktop. For detailed information about configuring Cisco Secure Desktop, see the Cisco Secure Desktop Configuration Guide for Cisco ASA 5500 Series Administrators (Software Release 3.2). Enabling AnyConnect Rekey Configuring AnyConnect Rekey specifies that SSL renegotiation takes place during rekey. When the security appliance and the SSL VPN client perform a rekey, they renegotiate the crypto keys and initialization vectors, increasing the security of the connection. To enable the client to perform a rekey on an SSL VPN connection for a specific group or user, use the svc rekey command from group-policy and username webvpn modes. Cisco AnyConnect VPN Client Administrator Guide 6-6 OL-12950-012

Section	Page
About This Guide 7	3
chapter 1	3
Introduction 1	3
chapter 2	3
Common AnyConnect VPN Client Installation and Configuration Procedures 1	3
chapter 3	4
Installing the AnyConnect Client and Configuring the Security Appliance with ASDM 1	4
chapter 4	4
Installing the AnyConnect Client on a Security Appliance Using CLI 1	4
chapter 5	4
Configuring AnyConnect Features Using ASDM 1	4
chapter 6	4
Configuring AnyConnect Features Using CLI 1	4
chapter 7	5
Configuring and Using AnyConnect Client Operating Modes and User Profiles 1	5
chapter 8	5
Customizing and Localizing the AnyConnect Client 1	5
chapter 9	5
Monitoring and Maintaining the AnyConnect Client 1	5
appendix A	5
Sample AnyConnect Profile and XML Schema 1	5
appendix B	6
Using Microsoft Active Directory to Add the Security Appliance to the List of Internet Explorer Trusted Sites for Domain Users 1	6
Index	6
About This Guide	7
Document Objectives	7
Audience	7
Related Documentation	8
Document Organization	8
Document Conventions	9
Obtaining Documentation, Obtaining Support, and Security Guidelines	10
Licensing	10
Introduction	11
AnyConnect Client Features	11
Remote User Interface	12
Getting and Installing the Files You Need	17
CSA Interoperability with the AnyConnect Client and Cisco Secure Desktop	17
Common AnyConnect VPN Client Installation and Configuration Procedures	19
Installing the AnyConnect Client	19
Before You Install the AnyConnect Client	20
Ensuring Automatic Installation of AnyConnect Clients	20
AnyConnect Client and New Windows Installations	21
Adding a Security Appliance to the List of Trusted Sites (Internet Explorer)	21
Adding a Security Certificate in Response to Browser Security Alert Windows	22
Replacing a Digital Certificate with a Trusted Certificate	25
Installing the AnyConnect Client on a User’s PC	26
Where to Find the AnyConnect Client Files to Install	26
Installing the AnyConnect Client Using the Microsoft Windows Installer on a PC Running Windows	26
Installing the AnyConnect Client on a PC Running Linux	27
Installing the AnyConnect Client on a PC Running MAC OSX	27
Installing the AnyConnect Client and Configuring the Security Appliance with ASDM	29
Installing the AnyConnect Client on a Security Appliance Using CLI	39
Enabling AnyConnect Client SSL VPN Connections Using CLI	40
Disabling Permanent Client Installation	42
Configuring AnyConnect Features Using ASDM	43
Enabling Datagram Transport Layer Security (DTLS) with AnyConnect (SSL) Connections	43
Configuring DTLS	44
Prompting Remote Users	46
Enabling IPv6 VPN Access	47
Enabling Modules for Additional AnyConnect Features	47
Configuring, Enabling, and Using Other AnyConnect Features	48
Configuring Certificate-only Authentication	48
Using Compression	51
Changing Compression Globally	52
Changing Compression for Groups and Users	52
Enabling AnyConnect Keepalives	53
Enabling AnyConnect Rekey	54
Enabling and Adjusting Dead Peer Detection	56
Configuring the Dynamic Access Policies Feature of the Security Appliance	57
Cisco Secure Desktop Support	57
Configuring AnyConnect Features Using CLI	59
Enabling Datagram Transport Layer Security (DTLS) with AnyConnect (SSL) Connections	59
Enabling DTLS Globally for a Specific Port	60
Enabling DTLS for Specific Groups or Users	60
Prompting Remote Users	60
Enabling IPv6 VPN Access	61
Enabling Modules for Additional AnyConnect Features	62
Configuring, Enabling, and Using Other AnyConnect Features	63
Configuring Certificate-only Authentication	63
Using Compression	63
Configuring the Dynamic Access Policies Feature of the Security Appliance	64
Cisco Secure Desktop Support	64
Enabling AnyConnect Rekey	64
Enabling and Adjusting Dead Peer Detection	65
Enabling AnyConnect Keepalives	66
Configuring and Using AnyConnect Client Operating Modes and User Profiles	67
AnyConnect Client Operating Modes	67
Using the AnyConnect CLI Commands to Connect (Standalone Mode)	67
Connecting Using WebLaunch	69
User Log In and Log Out	70
Logging In	70
Logging Out	70
Configuring and Using User Profiles	70
Enabling AnyConnect Client Profile Downloads	71
Configuring Profile Attributes	76
Enabling Start Before Logon (SBL) for the AnyConnect Client	77
XML Settings for Enabling SBL	77
CLI Settings for Enabling SBL	77
Configuring the ServerList Attribute	78
Configuring the Certificate Match Attribute	78
Certificate Key Usage Matching	78
Extended Certificate Key Usage Matching	79
Certificate Distinguished Name Mapping	79
Certificate Matching Example	81
Customizing and Localizing the AnyConnect Client	83
Customizing the End-user Experience	83
Language Translation (Localization) for User Messages	85
Understanding Language Translation	85
Configuring Language Localization Using ASDM	86
Creating or Modifying a Translation Table Using ASDM	88
Import/Export Language Localization	89
Creating or Modifying a Translation Table Using CLI	90
Monitoring and Maintaining the AnyConnect Client	95
Viewing AnyConnect Client and SSL VPN Sessions	95
Adjusting MTU Size Using ASDM	96
Adjusting MTU Size Using CLI	96
Logging Off AnyConnect Client Sessions	97
Updating AnyConnect Client and SSL VPN Client Images	98
Sample AnyConnect Profile and XML Schema	99
Sample AnyConnect Profile	99
Sample AnyConnect Profile Schema	101
Using Microsoft Active Directory to Add the Security Appliance to the List of Internet Explorer Trusted Sites for Domain Users	113
Index	115
A	115
C	115
D	115
E	115
F	115
G	116
I	116
K	116
L	116
M	116
N	116
O	116
P	117
R	117
S	117
T	117
U	117
V	118
W	118

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6-6

Cisco AnyConnect VPN Client Administrator Guide

OL-12950-012

Chapter 6

Configuring AnyConnect Features Using CLI

Configuring, Enabling, and Using Other AnyConnect Features

Changing Compression for Groups and Users

To change compression for a specific group or user, use the

svc

compression

command in the

group-policy and username webvpn modes:

svc

compression

{

deflate

none

}

svc

compression

{

deflate

none

}

By default, for groups and users, SSL compression is set to

deflate

(enabled).

To remove the

svc

compression

command from the configuration and cause the value to be inherited

from the global setting, use the

form of the command:

The following example disables compression for the group-policy sales:

hostname(config)#

group-policy sales attributes

hostname(config-group-policy)#

webvpn

hostname(config-group-webvpn)#

svc compression none

Note

For compression to work, both the

compression svc

command (configured from global

configuration mode) and the

svc compression

command (configured in group-policy and

username webvpn modes) must be enabled. If

either

command is set to

none

or to the

form,

compression is disabled.

Configuring the Dynamic Access Policies Feature of the Security Appliance

On the security appliance, you can configure authorization that addresses the variables of multiple group

membership and endpoint security for VPN connections. There is no specific configuration of

AnyConnect required to use dynamic access policies. For detailed information about configuring

dynamic access policies, see

Cisco ASDM User Guide, Cisco Security Appliance Command Line

Configuration Guide,

Cisco Security Appliance Command Reference.

Cisco Secure Desktop Support

Cisco Secure Desktop validates the security of client computers requesting access to your SSL VPN,

helps ensure they remain secure while they are connected, and attempts to remove traces of the session

after they disconnect. The Cisco AnyConnect VPN Client supports the Secure Desktop functions of

Cisco Secure Desktop for Windows 2000 and Windows XP. There is no specific configuration of

AnyConnect required to use Secure Desktop. For detailed information about configuring Cisco Secure

Desktop, see the

Cisco Secure Desktop Configuration Guide for Cisco ASA 5500 Series Administrators

(Software Release 3.2)

Enabling AnyConnect Rekey

Configuring AnyConnect Rekey specifies that SSL renegotiation takes place during rekey.

When the security appliance and the SSL VPN client perform a rekey, they renegotiate the crypto keys

and initialization vectors, increasing the security of the connection.

To enable the client to perform a rekey on an SSL VPN connection for a specific group or user, use the

svc rekey

command from group-policy and username webvpn modes.