Cisco PIX 500 Series Configuration Manual page 796

Configuring Application Access
Recovering from hosts File Errors When Using Application Access
The following errors can occur if you do not close the Application Access window properly:
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These errors can result from terminating the Application Access window in any improper way. For
example:
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This section includes the following topics:
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Understanding the hosts File
The hosts file on your local system maps IP addresses to host names. When you start Application Access,
clientless SSL VPN modifies the hosts file, adding clientless SSL VPN-specific entries. Stopping
Application Access by properly closing the Application Access window returns the file to its original
state.
Before invoking Application Access...
When Application Access starts....
When Application Access stops...
After finishing Application Access...
Note Microsoft anti-spyware software blocks changes that the port forwarding Java applet makes to the hosts
file. See www.microsoft.com for information on how to allow hosts file changes when using
anti-spyware software.
Cisco Security Appliance Command Line Configuration Guide
37-40
The next time you try to start Application Access, it might be disabled; you receive a
error message.
File Found
The applications themselves might be disabled or might malfunction, even when you are running
them locally.
Your browser crashes while you are using Application Access.
A power outage or system shutdown occurs while you are using Application Access.
You minimize the Application Access window while you are working, then shut down your
computer with the window active (but minimized).
Understanding the hosts File
Stopping Application Access Improperly
Reconfiguring a hosts File Automatically Using Clientless SSL VPN
Reconfiguring hosts File Manually
Chapter 37 Configuring Clientless SSL VPN
hosts file is in original state.
Clientless SSL VPN copies the hosts file to
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hosts.webvpn, thus creating a backup.
Clientless SSL VPN then edits the hosts file,
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inserting clientless SSL VPN-specific
information.
Clientless SSL VPN copies the backup file to
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the file, thus restoring the hosts file to
hosts
its original state.
• Clientless SSL VPN deletes hosts.webvpn.
hosts file is in original state.
Backup HOSTS
OL-12172-03