Download Firmware Cisco ESA AsyncOS 13.5 / 12.5.2

Cisco has released two firmware updates for its Email Security Appliances, which are abbreviated to ESA. The technology comes from IronPort Systems, which was purchased by Cisco in 2007. Although that was more than a decade ago, you still hear the name IronPort for these appliances. For the supported upgrade paths, it is recommended that you read the documentation or contact Cisco’s TAC. Version numbers are fixed at 13.5 and 12.5.2. The list of changes looks like this:

Version 13.5

What’s New In This Release

• Integrating the Cisco Email Security Gateway with Cisco Advanced Phishing Protection cloud service
• Improve Phishing Detection Efficacy using Service Logs
• Improved Phishing Efficacy

Changes in Behavior

• Changes to Passphrase Settings
• Changes in alerts when database size limit is reached
• Changes in Outbreak Filters for Spam Positive Messages

What’s New In AysncOS 12.5.2

This release contains a number of bug fixes. Known Issues – Fixed Issues