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Ask the Expert- SD-WAN


Cisco AsyncOS 7.5.1-074 for Web FCS Release Notification

Dear Cisco Web Security Customer,

Cisco is pleased to announce a new maintenance release of AsyncOS 7.5.1-074 for Web to select customers (FCS). This release applies to all our Web Security Appliances (S-Series).

Note: If you manage multiple Web Security Appliances using our Security Management Appliance (SMA) you need to upgrade the SMAs to AsyncOS 7.9.1-030 for Security Management (or higher).

Partial list of defects fixed in AsyncOS 7.5.1-074 for Web

  • Fixed: Rebooting an appliance without a proper shutdown sometimes caused irreparable damage to the appliance. This is fixed. [Defect ID: 73467]
  • Fixed: Processing client requests sometimes took too long after updating new anti-malware rules. This is fixed. [Defect ID: 81055]
  • Fixed: Overloading webroot made the WSA unusably slow. This is fixed. [Defect ID: 81661]
  • Fixed: With Safe Search enabled, for URLs that included a question mark (?) in the first position after the domain name, for example, "", transaction requests were resulting in an HTTP 404 error message. This is fixed. [Defect ID: 83666]
  • Fixed: Download time for Web Tracking data in CSV format was excessive when specifying a custom time range for the report. This is fixed. [Defect ID: 85964]
  • Fixed: After upgrading to 7.5, attempts to bring additional Web Security Appliances online were unsuccessful due to port-number mismatches between the Appliance and the WCCP router. AsyncOS now sorts port numbers from smallest to largest to prevent mismatches. This is fixed. [Defect ID: 86704]

For further information about this release, please refer to the AsyncOS Release Notes attached to this annoucement.

If you are concerned about an issue not listed there, please contact your authorized support provider to make an inquiry.

How to Upgrade

Prior to upgrading to this release, please read the Release Notes referenced above and save a copy of the configuration file somewhere other than on your appliance.

Once you have read the Release Notes you may log into the command line of your IronPort Appliance as the 'admin' user, and type 'upgrade', or use the WebUI upgrade functionality in the 'System Administration' tab.
You may upgrade directly to the highest version available in the displayed list.

**NOTE** It is important that you follow the upgrade instructions available in the Release Notes. If you do attempt to upgrade and do not see the desired release version available, your appliance is likely not on a version allowed to upgrade directly. See 'Upgrade Paths' below.

Upgrade Paths

Please refer to the Release Notes for qualified upgrade paths.
If your systems are on any other AsyncOS release, you will need to perform multiple upgrades as specified in the release notes. Only the immediate next step in the upgrade path will be shown to you, with the next revision being shown once you are at the approved level.

Release Stage

First Customer Ship (FCS): This release has been fully qualified for production usage by Cisco IronPort. It has been extensively tested for functionality and stability. Following a staged release process, we offer select customers the chance to benefit from new features and enhancements as early adopters.

Thank you for choosing Cisco Security Products.

Best Regards,
Cisco Content Security Customer Support
Support Portal:
Toll-Free Customer Support
United States: 1-877-641-IRON (4766)

NOTICE: CISCO SYSTEMS CONFIDENTIAL AND PROPRIETARY This document contains information which is both confidential and proprietary to IronPort. Neither this document nor the information contained herein shall be copied, disclosed to others or used for any purposes beyond the specific purpose for which this document was delivered without the express written permission of IronPort. If you receive this message in error, please notify the sender and destroy the attached message (and all attached documents) immediately.

© 2012 Cisco Systems, Inc. All rights reserved.

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