ERROR_IPSEC_DOSP_BLOCK - 13925 (0x3665)
IPsec DoS Protection matched an explicit block rule.
Updated: Feb 21, 2026
Technical Meaning
The ERROR_IPSEC_DOSP_BLOCK error code indicates that the IPsec DoS Protection mechanism has matched an explicit block rule. This typically means that a packet or flow was blocked by the IPsec policy configured on the system.
Error Details
This error is generated when the IPsec stack detects a packet that matches a predefined block rule within its security policies. The IPsec DoS Protection feature is designed to prevent denial-of-service (DoS) attacks by blocking suspicious or malicious traffic based on various criteria such as packet characteristics, flow patterns, and other security rules.
Usage Context
This error can occur in scenarios where network traffic is being monitored and analyzed for potential threats. It may be observed during the execution of IPsec-related operations, such as establishing secure connections or processing incoming packets.
Developer Interpretation
Developers should interpret this error as an indication that a specific packet has been blocked by the IPsec DoS Protection mechanism. This can help in understanding the security policies and rules configured on the system. Developers may need to review these policies to ensure they are correctly configured and do not inadvertently block legitimate traffic.
Related Errors
ERROR_IPSEC_KEY_USAGE(0x80240016): Indicates that a key usage policy was violated.ERROR_IPSEC_PROCESSING_FAILURE(0x80240035): Indicates an error occurred during IPsec processing.
FAQ
Q: What does the ERROR_IPSEC_DOSP_BLOCK mean?
A: It indicates that a packet or flow was blocked by the IPsec DoS Protection mechanism based on predefined rules.
Q: How can I troubleshoot this error?
A: Review the security policies and rules configured in the IPsec stack to ensure they are correctly set up. Verify that no legitimate traffic is being inadvertently blocked.
Summary
The ERROR_IPSEC_DOSP_BLOCK error code signifies that a packet or flow was blocked by the IPsec DoS Protection mechanism based on explicit block rules. This can be useful for understanding and configuring security policies to protect against potential DoS attacks while ensuring legitimate traffic is not impacted.