Software Secure Workload
Activity Configure

Agent Communications Overview

Secure Workload agents use TLS to secure the TCP connections to the Secure Workload Cloud SaaS servers. These connections are broken down into three distinctive channels.

  • Agent -> Cisco Secure Workload SaaS control channel over port TCP/443 (TLS) (sensorVIP)

    This is a low volume control channel that allows the agent to register with Secure Workload and also handles configuration pushes and software upgrade notifications.

  • Agent -> Cisco Secure Workload SaaS flow data over TCP/443 (TLS) (collector)

    Flow data is the extracted flow metadata information; the data will be sent to 1 set of 16 IP addresses at a time. The second set of IP addresses is for standby. This is around 1 – 5% of actual server traffic.

  • Agent ->Cisco Secure Workload SaaS enforcement data over TCP/443 (TLS) (efe)

    The enforcement data channel is a low volume control channel that is used to push the policies to the sensors and also gather enforcement statistics.

The sensor validates the TLS certificate from the Secure Workload Cloud control, data and enforcement servers against a local CA that is installed with the agent. No other CAs are used, so any other certificate sent to the agent will result in a verification failure and the agent will not connect. This will result in the agent not registering, checking-in, sending flows or receiving enforcement policies.