search close

Agent Installation Overview

access_time Updated Feb 3, 2023

About Agents

The Signal Sciences Agent is a small daemon process which provides the interface between your web server and our analysis platform. An inbound web request is passed to the agent, which then decides whether the request should be permitted to continue, or whether it should take action.

To start installing an agent, choose your OS:

Note: ARM processors are currently only supported on agent v4.27.0 and higher. Dedicated agent packages are only available for Ubuntu, Debian, and CentOS.

Agent end-of-support policy

Agent versions have a two year support cycle with versions older than two years being retired or deprecated on a quarterly cadence. Retiring older versions with fewer features enables us to focus our resources on supporting and developing newer versions that provide more value to our customers.

Under the agent end-of-support policy, we:

  • Support agent versions that are under two years old. Customers who use older versions of the agent are unsupported and don’t have access to new features and integrations included with newer versions.

  • Deprecate and remove support from agent versions that are older than two years. Unsupported agent versions don’t receive rule updates and blocking decisions. Deprecation occurs on a quarterly cadence at the end of January, April, July, and October.

    If you are using an older version, you can upgrade your agent to a supported version. Contact securitysupport@fastly.com if you need help upgrading your agent.

The agent end-of-support policy adheres to the Fastly product lifecycle.