Devices Using a Dynamic Web Proxy
If a client device is configured to use a dynamic Web proxy, it typically receives its proxy settings
in a proxy auto-config (PAC) file from a server on the local network. If you have such client devices
on the network, you can use the Captive Portal to respond to the request for a PAC file from
these devices with a preconfigured PAC file.
This preconfigured PAC file disables the proxy settings on client devices and enables them to
connect to the network without going through a proxy server. The preconfigured PAC file is
located in the configuration directory of the Captive Portal.
The controller supports both proxy auto-config (PAC) and Web Proxy Autodiscovery Protocol
(WPAD). Currently, the controller uses a PAC file that supports requests for both PAC and WPAD
proxy configuration files.
User Agent Blacklist
By default, the controller automatically blocks certain user agents (or software used by a user)
from accessing the hotspot.
These blocked user agents include:
• ZoneAlarm
• VCSoapClient
• XTier NetIdentity
• DivX Player
• Symantec LiveUpdate
• Windows Live Messenger
• StubInstaller
• windows-update-agent
• Windows Live Essentials
• Microsoft Dr. Watson for Windows (MSDW)
• Avast Antivirus Syncer
• Microsoft Background Intelligent Transfer Service (BITS)
• Google Update
• TrendMicro client
• Skype WISPr
When the controller blocks any of these user agents, an error message appears on the user
device.
You can add or remove user agents from this blacklist. For more information, see
Global User Agent Black List
In release 3.0, Microsoft NCSI was included in the user agent blacklist. This prevented
NOTE:
Windows Network Awareness, a feature that allows Windows services and applications to
automatically select the network connection best suited to their tasks, from working properly.
Microsoft NCSI has been removed from the user agent blacklist in release 3.1 and later.
SmartCell Gateway 200/Virtual SmartZone High-Scale for Release 3.4.1 Administrator Guide
on page 210.
Creating and Managing Hotspots
User Agent Blacklist
Managing the
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