ISO 27001:2022 · Technological controls
ISO 27001:2022 8.20: Networks security
ISO 27001:2022 8.20 covers Networks security. The held text names 5 evidence records for it, the first being Statement of Applicability entry for control A.8.20, showing inclusion or justified exclusion, implementation status and the risks it.... The common gap an assessor flags is Network diagrams are years out of date.
Networks and network devices are to be secured, managed and controlled so that information in systems and applications is protected. Purpose (stated in ISO/IEC 27002:2022): protects information in networks and supporting facilities from compromise via the network. As an Annex A reference control, it is compared with the controls determined in risk treatment (6.1.3 c) and recorded in the Statement of Applicability as included or excluded, with the justification and implementation status (6.1.3 d); implementation guidance is ISO/IEC 27002:2022 8.20.
What evidence supports 8.20?
- Annex A technological controlStatement of Applicability entry for control A.8.20, showing inclusion or justified exclusion, implementation status and the risks it treats
- Annex A technological controlCurrent network diagrams and device configuration backups for routers, switches, firewalls and wireless controllers
- Annex A technological controlDefined responsibilities and procedures for network device management, separated from system operations where appropriate
- Annex A technological controlFirewall rule sets, network access control configuration and device authentication (for example 802.1X) restricting what can connect
- Annex A technological controlHardening standards for network devices and evidence that insecure protocols are disabled
Where this requirement comes from
This is our own statement of ISO 27001:2022 8.20, read from the copy we hold (licensed complete copy) and stated in our words, not the standard verbatim. The framework as we hold it.
Common gaps an assessor flags
- Network diagrams are years out of date
- Management interfaces of network devices are reachable from user networks
- Unknown devices can connect to wired ports without any authentication
- Legacy protocols such as Telnet or SNMPv1 remain enabled
How it maps to SOC 2
- CC6.6 high Networks security is the boundary protection this criterion requires.
A link is a topical overlap with a confidence and a reason. It does not establish that meeting one requirement satisfies the other, and it is not certification.