Assessment Objective
Determine if:
- SC-07(04)(a) a managed interface is implemented for each external telecommunication service;
- SC-07(04)(b) a traffic flow policy is established for each managed interface;
- SC-07(04)(c)
- SC-07(04)(c)[01] the confidentiality of the information being transmitted across each interface is protected;
- SC-07(04)(c)[02] the integrity of the information being transmitted across each interface is protected;
- SC-07(04)(d) each exception to the traffic flow policy is documented with a supporting mission or business need and duration of that need;
- SC-07(04)(e)
- SC-07(04)(e)[01] exceptions to the traffic flow policy are reviewed [Assignment: frequency];
- SC-07(04)(e)[02] exceptions to the traffic flow policy that are no longer supported by an explicit mission or business need are removed;
- SC-07(04)(f) unauthorized exchanges of control plan traffic with external networks are prevented;
- SC-07(04)(g) information is published to enable remote networks to detect unauthorized control plane traffic from internal networks;
- SC-07(04)(h) unauthorized control plane traffic is filtered from external networks.
Assessment Methods
Examine
- System and communications protection policy
- traffic flow policy
- information flow control policy
- procedures addressing boundary protection
- system security architecture
- system design documentation
- boundary protection hardware and software
- system architecture and configuration documentation
- system configuration settings and associated documentation
- records of traffic flow policy exceptions
- system audit records
- system security plan
- other relevant documents or records
Interview
- System/network administrators
- organizational personnel with information security responsibilities
- organizational personnel with boundary protection responsibilities
Test
- Organizational processes for documenting and reviewing exceptions to the traffic flow policy
- organizational processes for removing exceptions to the traffic flow policy
- mechanisms implementing boundary protection capabilities
- managed interfaces implementing traffic flow policy
Ticket collegati
| Tipo di collegamento | Ticket |
|---|---|
| blocks | SC-07(04) [H] External Telecommunications Services |