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The ability to enable this feature requires an advanced subscription level with OpenDNS.

Split-Include or Split-Exclude Tunneling (no split-DNS and tunnel-all-DNS Disabled) Install and Configure Umbrella Roaming Module Pre-deployment (Manual) Method Deploy OpenDNS Roaming Module Deploy OrgInfo.json Web-Deployment Method Deploy OpenDNS Roaming Module Deploy OrgInfo.json Configure Verify Troubleshoot Related Information.

In AnyConnect 4.3.X and later, the OpenDNS Roaming client is now available as an integrated module.

It is also known as the Cloud Security module and it can be predeployed to the endpoint with the AnyConnect installer, or it can be downloaded from the Adaptive Security Appliance (ASA) via web-deploy.

If your network is live, make sure that you understand the potential impact of any commands or configuration.

When the file is first downloaded, it is saved at a specific path which depends on the operating system.

For Microsoft Windows, OrgInfo.json is downloaded to C:ProgramDataCiscoCisco AnyConnect Secure Mobility ClientUmbrella.

The organization ID represents the organization information for the user that is currently logged into the OpenDNS dashboard.

The organization ID is static, unique, and auto-generated by OpenDNS for each organization.

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The fingerprint is used to validate the OrgInfo.json file during device registration and the user ID represents a unique ID for the logged in user.

On MAC OS X, information from this file is saved to updater.plist in the data directory under the Umbrella directory.

Once the module has successfully read information from the OrgInfo.json file, it attempts to register with OpenDNS with a cloud API.

Sync data includes syncInterval, whitelisted domains, and IP addresses among other things.

The sync interval is the number of minutes after which the module should attempt to resync.

These DNS requests include TXT queries for debug.opendns.com.

Based on the response, the client is able to determine if an on-premise OpenDNS Virtual Appliance (VA) exists in the network.

The client relies on the VA for DNS enforcement at the network level.

If a negative response is received, the client sends a DNS request to the OpenDNS public resolvers using UDP53.

If a negative response is received, the client retries the query in a few seconds.

A fail-open state means that DNS encryption andor protection is not possible.

Once the Roaming module has successfully transitioned to a protected andor encrypted state, all DNS queries for search domains outside of the local search domains and whitelist domains are sent to the OpenDNS resolvers for name resolution.

With encrypted state enabled, all DNS transactions are encrypted by the dnscrypt process.

For the module to be active during an AnyConnect tunnel-all configuration, the Disable roaming client while full-tunnel VPN sessions are active option must be unchecked on the OpenDNS portal.

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