Title

The Unified Communications Endpoint must be configured to limit the number of concurrent sessions to an organizationally defined number. (Cat II impact)

Discussion

Unified Communications Endpoint management includes the ability to control the number of user sessions and limiting the number of allowed user sessions helps limit risk related to DoS attacks. Unified Communications Endpoint sessions occur peer-to-peer for media streams and client-server with session managers. For those endpoints that conference together multiple streams, the limit may be increased according to policy but a limit must still exist.

Check Content

Verify the Unified Communications Endpoint is configured to limit the number of concurrent sessions to an organizationally defined number. If the Unified Communications Endpoint is not configured to limit the number of concurrent sessions to the limit set by local policy, this is a finding.

Fix Text

Configure the Unified Communications Endpoint to limit the number of concurrent sessions to the limit set by local policy.

Additional Identifiers

Rule ID: SRG-NET-000053-VVEP-00009_rule

Vulnerability ID: SRG-NET-000053-VVEP-00009

Group Title: SRG-NET-000053-VVEP-00009

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.