Define maximum number of connections
Summary
Each port must have a maximum number of connections defined per source IP.
Description
Some attacks aim to exhaust a system's resources by establishing a large number of connections without intending to complete them. Setting connection limits per source IP helps to prevent connection exhaustion attacks, where attackers try to overwhelm the system with a high volume of incomplete connections.
For example, in the case of Distributed Denial-of-Service (DDoS) attacks, where multiple compromised systems are used to flood a target with traffic, setting connection limits per source IP can mitigate the impact by restricting the number of connections from each individual source.
Supported In
This requirement is verified in following services
| Plan | Supported |
|---|---|
| Essential | 🔴 |
| Advanced | 🟢 |
References
- CIS-16_10. Apply secure design principles in application architectures
- OWASP TOP 10-A5. Security misconfiguration
- CMMC-AC_L1-3_1_20. External connections
- CMMC-SC_L2-3_13_7. Split tunneling
- HITRUST CSF-01_j. User authentication for external connections
- HITRUST CSF-01_l. Remote diagnostic and configuration port protection
- HITRUST CSF-01_n. Network connection control
- ISSAF-S_5_1. Web server security - Countermeasures (secure administrative access)
- PTES-7_7. Post Exploitation - Persistence
- NIST 800-171-1_20. Verify and control/limit connections to and use of external systems
- C2M2-9_3_d. Implement IT and OT asset security for cybersecurity architecture
Vulnerabilities
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