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1-5
Cisco ASA Series CLI Configuration Guide
Chapter 1 Configuring Clientless SSL VPN
Observing Clientless SSL VPN Security Precautions
•
The ASA does not support clientless access to Windows Shares (CIFS) Web Folders from Windows
7, Vista, Internet Explorer 8-9, Mac OS X, and Linux.
•
Certificate authentication, including the DoD Common Access Card and SmartCard, works with the
Safari keychain only.
•
The ASA does not support DSA or RSA certificates for clientless SSL VPN connections.
•
Some domain-based security products have requirements above those requests that originate from
the ASA.
•
Inspecting configuration control and other inspection features under the Modular Policy Framework
are not supported.
•
The
vpn-filter
command under group policy is for client-based access and is thus not supported.
Filter
under webvpn mode in group policy is for clientless-based access.
•
Neither NAT or PAT is applicable to the client.
•
The ASA does not support the use of the QoS rate limiting commands, such as
police
or
priority-queue
.
•
The ASA does not support the use of connection limits, checking either via the static or the Modular
Policy Framework
set connection
command.
•
http://java.com/en/download/faq/java_mac.xml
.
•
If you have several group policies configured for the clientless portal, they are displayed in a
drop-down on the logon page. If the top of the list of group policies is one that requires a certificate,
then as soon as the user gets to the logon page, they must have a matching certificate. If not all your
group policies use certificates, then configure the list to display a non-certificate policy first. Name
your group polices to sort alphabetically, or prefix them with numbers so an AAA policy shows up
first. For example, 1-AAA, 2-Certificate. Or, create a "dummy" group policy named Select-a-Group,
and make sure that shows up first.
Observing Clientless SSL VPN Security Precautions
By default, the ASA permits all portal traffic to all web resources (e.g., HTTPS, CIFS, RDP, and
plug-ins). The ASA clientless service rewrites each URL to one that is meaningful only to itself; the user
cannot use the rewritten URL displayed on the page accessed to confirm that they are on the site they
requested. To avoid placing users at risk, assign a web ACL to the policies configured for clientless
access – group-policies, dynamic access policies, or both – to control traffic flows from the portal. For
example, without such an ACL, users could receive an authentication request from an outside fraudulent
banking or commerce site. Also, we recommend disabling URL Entry on these policies to prevent user
confusion over what is accessible.
Figure 1-1
Example URL Typed by User
Summary of Contents for 5505 - ASA Firewall Edition Bundle
Page 28: ...Glossary GL 24 Cisco ASA Series CLI Configuration Guide ...
Page 61: ...P A R T 1 Getting Started with the ASA ...
Page 62: ......
Page 219: ...P A R T 2 Configuring High Availability and Scalability ...
Page 220: ......
Page 403: ...P A R T 2 Configuring Interfaces ...
Page 404: ......
Page 499: ...P A R T 2 Configuring Basic Settings ...
Page 500: ......
Page 533: ...P A R T 2 Configuring Objects and Access Lists ...
Page 534: ......
Page 601: ...P A R T 2 Configuring IP Routing ...
Page 602: ......
Page 745: ...P A R T 2 Configuring Network Address Translation ...
Page 746: ......
Page 845: ...P A R T 2 Configuring AAA Servers and the Local Database ...
Page 846: ......
Page 981: ...P A R T 2 Configuring Access Control ...
Page 982: ......
Page 1061: ...P A R T 2 Configuring Service Policies Using the Modular Policy Framework ...
Page 1062: ......
Page 1093: ...P A R T 2 Configuring Application Inspection ...
Page 1094: ......
Page 1191: ...P A R T 2 Configuring Unified Communications ...
Page 1192: ......
Page 1333: ...P A R T 2 Configuring Connection Settings and QoS ...
Page 1334: ......
Page 1379: ...P A R T 2 Configuring Advanced Network Protection ...
Page 1380: ......
Page 1475: ...P A R T 2 Configuring Modules ...
Page 1476: ......
Page 1549: ...P A R T 2 Configuring VPN ...
Page 1550: ......
Page 1965: ...P A R T 2 Configuring Logging SNMP and Smart Call Home ...
Page 1966: ......
Page 2059: ...P A R T 2 System Administration ...
Page 2060: ......
Page 2098: ...1 8 Cisco ASA Series CLI Configuration Guide Chapter 1 Troubleshooting Viewing the Coredump ...
Page 2099: ...P A R T 2 Reference ...
Page 2100: ......