Packet loss (fwconn_key_init_links failed) for ESP packets when using User-Mode SecureXL

Product: IPSec VPN, SecureXL
Version: R81.20
Last Modified: 2024-11-13

Symptoms

• ESP packets experience packet loss when traversing through the firewall.
• Running fw ctl zdebug + drop displays:
  fw_log_drop_ex: Packet proto=50 x.x.x.x:0 -> x.x.x.x:0 dropped by fw_handle_first_packet Reason: fwconn_key_init_links (INBOUND) failed.
• User-Mode SecureXL is active, confirmed via fwaccel stat.

Solution

This problem was fixed. The fix is included in:

• Jumbo Hotfix Accumulator for R81.20 starting from Take 90
• Jumbo Hotfix Accumulator for R81.10 starting from Take 171

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.

Article Properties

Access Level: General
Status: Approved by TAC
Date Created: 2024-10-30
Last Modified: 2024-11-13