The AnyConnect Posture Module provides the AnyConnect Secure Mobility Client the ability to identify the operating system, anti-virus, anti-spyware, and firewall software installed on the host. The HostScan application gathers this information. Posture assessment requires HostScan to be installed on the host.
Using the secure desktop manager tool in the Adaptive Security Device Manager (ASDM), you can create a prelogin policy which evaluates the operating system, anti-virus, anti-spyware, and firewall software Host Scan identifies. Based on the result of the prelogin policy’s evaluation, you can control which hosts are allowed to create a remote access connection to the security appliance.
The HostScan support chart contains the product name and version information for the anti-virus, anti-spyware, and firewall applications you use in your prelogin policies. We deliver HostScan and the HostScan support chart, as well as other components, in the HostScan package.
Starting with AnyConnect Secure Mobility Client, release 3.0, HostScan is available separately from CSD. This means you can deploy HostScan functionality without having to install CSD and you will be able to update your HostScan support charts by upgrading the latest HostScan package.