> Source: [sk116156](https://support.checkpoint.com/results/sk/sk116156)

# sk116156 - "Cannot establish connection to SSL Network Extender gateway. Try to reconnect." error from SNX client on Mac OS X / macOS after disabling both RC4 and 3DES cipher suites on the Mobile Access Gateway

| Property | Value |
|----------|-------|
| Solution ID | sk116156 |
| Date Created | 2017-03-02 |
| Last Modified | 2020-07-07 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R82.10, R82, R81.20 |

## Symptoms

- "`Cannot establish connection to SSL Network Extender gateway. Try to reconnect.`" error from SNX client on Mac OS X / macOS after disabling both the RC4 cipher suite (per [sk106478 - Check Point response to CVE-2015-2808 (Bar Mitzvah)](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk106478)) and the 3DES cipher suite (per [sk113114 - Check Point response to CVE-2016-2183 (Sweet32)](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk113114)) on the Mobile Access Gateway.

## Cause

SNX client for Mac OS X / macOS does not support AES encryption.

## Solution

This solution requires authentication. Please log in to view the full solution.

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