SC-10—Network Disconnect
Moderate
High
>Control Description
Terminate the network connection associated with a communications session at the end of the session or after ⚙organization-defined time period of inactivity.
>FedRAMP Baseline Requirements
No FedRAMP-specific parameter values or requirements for this baseline.
>Discussion
Network disconnect applies to internal and external networks. Terminating network connections associated with specific communications sessions includes de-allocating TCP/IP address or port pairs at the operating system level and de-allocating the networking assignments at the application level if multiple application sessions are using a single operating system-level network connection. Periods of inactivity may be established by organizations and include time periods by type of network access or for specific network accesses.
>Cross-Framework Mappings
>Programmatic Queries
Beta
Related Services
VPN
Direct Connect
Session Manager
CLI Commands
Check VPN tunnel timeout
aws ec2 describe-vpn-connections --query 'VpnConnections[*].{Id:VpnConnectionId,Options:Options}'List idle connection timeouts
aws elb describe-load-balancer-attributes --load-balancer-name ELB --query 'LoadBalancerAttributes.ConnectionSettings'Check ALB idle timeout
aws elbv2 describe-load-balancer-attributes --load-balancer-arn ARN --query 'Attributes[?Key==`idle_timeout.timeout_seconds`]'Get Session Manager timeout
aws ssm get-document --name SSM-SessionManagerRunShell --query 'Content'>Assessment Interview Topics
Questions assessors commonly ask
Process & Governance:
- •What policies govern the implementation of network disconnect?
- •How are system and communications protection requirements defined and maintained?
- •Who is responsible for configuring and maintaining the security controls specified in SC-10?
Technical Implementation:
- •How is network disconnect technically implemented in your environment?
- •What systems, tools, or configurations enforce this protection requirement?
- •How do you ensure that network disconnect remains effective as the system evolves?
- •What network boundary protections are in place (firewalls, gateways, etc.)?
- •How are session timeouts and termination controls configured?
Evidence & Documentation:
- •What documentation demonstrates the implementation of SC-10?
- •Can you provide configuration evidence or system diagrams showing this protection control?
- •What logs or monitoring data verify that this control is functioning correctly?
- •Can you provide network architecture diagrams and firewall rulesets?
- •Can you show session management configuration settings?
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