sk181507 - Security Gateway drops GTP Echo Response traffic with the reason "Wrong Destination Port"

Security Gateway drops GTP Echo Response traffic with the reason "Wrong Destination Port"

Product

Carrier Security

Version

R81 (EOS), R81.10 (EOS), R81.20

OS

Gaia

Last Modified

2025-01-20

Symptoms

Security Gateway drops GTP Echo Response traffic with the reason "Wrong Destination Port".

Cause

By default, Security Gateway makes sure the GTP Echo Response packets contain the correct port:

For GTPv0 - port 3386
For GTPv1 - port 2123 or port 2152

Solution

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NOTE

This solution has been verified for the specific scenario, described by the combination of Product, Version and Symptoms. It may not work in other scenarios.

Article Properties

Access Level: Advanced
Status: Approved by TAC
Date Created: 2023-09-24
Last Modified: 2025-01-20