1.3.2 Outbound traffic from CDE restricted
Outbound traffic from the CDE is restricted to only that which is necessary; all other traffic is denied.
5
artefacts
2
held by a system
2
at each review
moderate
to go live
Cloud console / configuration management
where the evidence lives
teal = a system already holds it · olive = produced at each review
system holds itEvidence a system already holds
- Egress firewall rules with justification · Cloud console / configuration management
- Monitoring logs of blocked outbound attempts · SIEM / log platform
periodic reviewEvidence produced at each review
- Default deny rule evidence · Document repository
- Periodic review records · Document repository
governing documentDocuments that govern the control
- Approved destination whitelist · Document repository
First move
Start with the 2 of 5 artefacts that already live in a system (Cloud console / configuration management); keep the periodic reviews but log each one as a dated record with a named reviewer.
Common gaps auditors find
- Wide-open egress for convenience
- DNS or NTP allowed to any
- No monitoring of denied traffic
Do this for your whole sheet
Paste the rows you run your controls from and get this mapping for every control at once, with the periodic-review ones flagged and a first move per row. No account for the first run.
Build my evidence sheet1.3.1 Inbound traffic to CDE restricted · 1.3.3 NSCs between wireless and CDE