Cisco Cisco Web Security Appliance S390 Release Notes

Generally, configuration files from earlier AsyncOS releases are incompatible with later AsyncOS 
releases and vice-versa. 

This section applies only to upgrades from releases earlier than AsyncOS 8.5. 

The encryption strength of the demo security certificate is 1024 bits both before and after upgrade to 
AsyncOS 8.5 and later. 

You must reboot the Web Security appliance after you upgrade AsyncOS for Web.

This section describes changes in behavior from previous versions of AsyncOS for Web that may affect 
the appliance configuration after you upgrade to the latest version. 

You can no longer use “

.*

” to begin or end a regular expression. You also cannot use “./” in a regular 

expression intended to match a URL, nor can you end such an expression with a dot.

Prior to AsyncOS 9.0, attempts to join an Active Directory domain with a user name that included special 
characters would produce an error. Now the following special characters can be used in domain user 
names: 

 (however, note that 

 is not yet supported).

Beginning in AsyncOS 8.5, individual users are limited to a maximum of 10 concurrent sessions; this 
total includes both CLI and Web interface sessions.

Beginning in AsyncOS 8.5, all available releases appear in the list of available upgrades, including 
releases that would previously have been provisioned only to a limited number of customers as a limited 
release. 

Each release in the list is identified by the release type (ED - Early Deployment, GD - General 
Deployment, MD - Maintenance Deployment, etc.) For an explanation of these terms, see 

.