Tunnel Testing fails after an upgrade

Product

IPSec VPN

Version

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

OS

Gaia

Last Modified

2024-10-22

Symptoms

• Tunnel Testing traffic fails on R81.20 ClusterXL HA gateways.
• Packet captures show that the peer responds with "ICMP Port Unreachable" messages after Cluster gateway responds to Tunnel Testing packet initiated from the peer Security Gateway.

Cause

The Security Gateway treats a tunnel testing reply source 18234 as a new connection, and performs Hide NAT.

Solution

This problem was fixed. The fix is included in:

• Jumbo Hotfix Accumulator for R81.20 starting from Take 79
• Jumbo Hotfix Accumulator for R81.10 starting from Take 158
• Jumbo Hotfix Accumulator for R81 starting from Take 106

If you choose not to upgrade, Check Point can supply a Hotfix. Contact Check Point Support to get a Hotfix for this issue.

A Support Engineer will make sure the Hotfix is compatible with your environment before providing the Hotfix.

For faster resolution and verification, please collect CPinfo files from the Security Management Server and Security Gateways involved in the case.

Hotfix installation instructions: Refer to sk168597 - How to install a Hotfix.

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.