> Source: [sk180713](https://support.checkpoint.com/results/sk/sk180713)

# sk180713 - Maestro drops Client-to-Site-to-Site (back-to-back connection) traffic from SSL Network Extender (SNX) or Endpoint Security Client

| Property | Value |
|----------|-------|
| Solution ID | sk180713 |
| Date Created | 2023-03-12 |
| Last Modified | 2023-07-24 |
| Technical Level | General |
| Products | Security Gateway, Scalable Platforms |
| Versions | R81.20, R81.10 (EOS), R81 (EOS), R81.20, R81.10 (EOS) |
| OS | Gaia |

## Symptoms

- * Maestro drops Client-to-Site-to-Site (back-to-back connection) traffic from SSL Network Extender (SNX) or Endpoint Security Client.
* Client-to-Site traffic, and Site-to-Site traffic, separately, work as expected.
* On the CLI of the Maestro Security Group, one or both of these messages appear in the output of`fw ctl zdebug + drop"`:   
  "*ICMP reply does not match a previous request* "   
  "*first packet isn't syn*"
* The issue does not occur when only one Security Group Member (SGM) is on.

## Solution

[Contact Check Point Support](https://www.checkpoint.com/support-services/contact-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](http://supportcontent.checkpoint.com/solutions?id=sk92739) from one of the Security Group Members in the case.

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