ERROR_IPSEC_THROTTLE_DROP - 13918 (0x365E)

Technical Background

The ERROR_IPSEC_THROTTLE_DROP error code, with the numeric value of 13918 and the hexadecimal representation of 0x365E, indicates that a packet was dropped by the Internet Protocol Security (IPsec) subsystem due to a Denial of Service (DoS) throttling mechanism. This error is specific to the IPsec protocol stack within the Windows operating system.

Error Details

The ERROR_IPSEC_THROTTLE_DROP error code is generated when the IPsec subsystem detects an attempt to overwhelm the system with excessive traffic, which could be indicative of a DoS attack. The throttling mechanism is designed to mitigate such attacks by temporarily dropping packets that exceed predefined thresholds or patterns.

Common Causes

The common causes for this error include:

• Exceeding the configured rate limit for IPsec packet processing.
• Attempting to send an excessive number of packets within a short period, which may trigger the DoS protection mechanism.
• Incorrect configuration settings that inadvertently enable aggressive throttling behavior.

Real-World Context

In practical scenarios, this error might be observed when there is a sudden increase in network traffic or when security policies are overly restrictive. Administrators should monitor network activity and ensure that IPsec configurations align with the expected workload to avoid unnecessary packet drops.

Is This Error Critical?

The severity of ERROR_IPSEC_THROTTLE_DROP depends on the context. While it is not a critical error in terms of system stability, it can impact application performance and user experience by dropping legitimate traffic. It is important for administrators to investigate such errors to ensure that network operations are not being unnecessarily restricted.

How to Diagnose

To diagnose ERROR_IPSEC_THROTTLE_DROP, follow these steps:

1. Review Operation Context: Examine the network environment and recent changes in security policies or traffic patterns.
2. Validate Parameters: Ensure that IPsec configuration parameters, such as rate limits and thresholds, are set appropriately.
3. Confirm Object Types: Verify that the objects involved (e.g., security associations) are correctly configured and not misused.
4. Verify Input Data: Check for any anomalies in the data being processed by the IPsec subsystem.
5. Check Limits or Constraints: Confirm that the system is not operating under conditions that would trigger throttling behavior.

How to Resolve

To resolve ERROR_IPSEC_THROTTLE_DROP, consider the following actions:

• Adjust rate limits and thresholds in the IPsec configuration to accommodate legitimate traffic patterns.
• Review security policies for any overly restrictive settings and adjust as necessary.
• Monitor network activity and ensure that the system is not being overwhelmed by excessive traffic.

Developer Notes

Developers should be aware of the potential impact of ERROR_IPSEC_THROTTLE_DROP on application performance. When integrating with IPsec, it is important to handle this error gracefully and provide feedback to users or other components in a way that does not disrupt normal operations.

Related Errors

• ERROR_IPSEC_KEY_EXCHANGE_FAILED: Indicates issues with the key exchange process.
• ERROR_IPSEC_NO_POLICY: Occurs when no IPsec policy is applied to the connection.
• ERROR_IPSEC_PROCESS_DROP: Indicates a packet was dropped due to other reasons, not specifically related to DoS throttling.

FAQ

Q: What does ERROR_IPSEC_THROTTLE_DROP mean?

A: It indicates that an IPsec packet was dropped by the system due to a Denial of Service (DoS) protection mechanism.

Q: How can I prevent this error from occurring?

A: Ensure proper configuration of rate limits and thresholds, monitor network activity, and adjust security policies as needed.

Q: Is ERROR_IPSEC_THROTTLE_DROP a critical error?

A: While it is not critical for system stability, it can impact application performance. It should be investigated to ensure that legitimate traffic is not being restricted.

Summary

The ERROR_IPSEC_THROTTLE_DROP error code is specific to the IPsec subsystem in Windows and indicates a packet drop due to DoS throttling. Administrators and developers should monitor network activity, review security policies, and adjust configurations as necessary to ensure optimal performance and prevent unnecessary packet drops.