> Source: [sk183791](https://support.checkpoint.com/results/sk/sk183791)

# sk183791 - Remote Access VPN / ESP traffic not working when Policy-Based Routing (PBR) is configured on VSX

| Property | Value |
|----------|-------|
| Solution ID | sk183791 |
| Date Created | 2025-08-26 |
| Last Modified | 2025-09-07 |
| Technical Level | General |
| Products | Security Gateway |
| Versions | R82, R81.20, R81.10 (EOS) |
| OS | Gaia |

## Symptoms

- * On a VSX Gateway or Cluster configured with Virtual Systems and Virtual Routers, Remote Access VPN and ESP traffic is incorrectly routed when Policy-Based Routing (PBR) is enabled. The Gateway / Cluster forwards the traffic via the default route instead of the PBR-defined route.

* The VS sends the VPN traffic out the wrong interface, and the Remote Access clients do not receive tunnel test responses and ESP packets, forcing the connections into Visitor Mode.

## Cause

SecureXL routing logic does not evaluate the source IP address when determining the route for VPN traffic. As a result, the system selects the default route instead of the correct PBR route.

## Solution

1. [Contact Check Point Support](https://www.checkpoint.com/) 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](https://support.checkpoint.com/results/sk/sk92739) files from the Security Management and Security Gateways involved in the case.  

   **Hotfix installation instructions:**   
   Refer to [sk168597](https://support.checkpoint.com/results/sk/sk168597) - How to install a Hotfix.  

2. Connect to the command line on the Security Gateway / each Cluster Member.

3. Log in to the Expert mode.
4. Back up the current configuration file:

   `cp -v $PPKDIR/conf/simkern.conf{,_BKP}`
5. Edit the configuration file (If the file does not exist, create it).

   `vi $PPKDIR/conf/simkern.conf`
6. Add this line to the file:

   `sim_disable_warp_jump=1`
7. Save the file.

8. Reboot the VSX gateway:

   `reboot`

   **Important** - In cluster, this can cause a failover.
9. Connect to the command line on the Security Gateway / each Cluster Member.

10. Log in to Gaia Clish or the Expert mode.

11. Get the current value of the kernel parameter:

    `fw ctl get int sim_disable_warp_jump -a`

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