> Source: [sk181224](https://support.checkpoint.com/results/sk/sk181224)

# sk181224 - Users get "Authentication Failed" when trying to connect to Mobile Access SNX

| Property | Value |
|----------|-------|
| Solution ID | sk181224 |
| Date Created | 2023-07-16 |
| Last Modified | 2023-07-17 |
| Technical Level | General |
| Products | Security Gateway |
| Versions | R81.10 (EOS), R81 (EOS) |
| OS | Gaia |

## Symptoms

- * End users can authenticate with the Mobile Access Portal, but they cannot access internal resources with SSL Network Extender (SNX).
* When users try to connect to SNX, an "*Authentication Failed*" error message appears.
* In a cluster, the issue occurs on both cluster members.
* VPND debugs shows this error message in *vpnd.elg* : "*RastaConnection::authenticate: failed to add to table connectra_sessions_to_instance*"
* Output of the command `fw tab -t connectra_sessions_to_instance -s` shows `25000` below `VALS` and below `PEAK`.

## Cause

The `connectra_sessions_to_instance` kernel table is full.

## Solution

This problem was fixed. The fix is included starting from:

* [Check Point R81.20](https://support.checkpoint.com/results/sk/skXXX)
* [Jumbo Hotfix Accumulator for R81.10](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81.10/Default.htm) starting from Take 82
* [Jumbo Hotfix Accumulator for R81](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81/Default.htm) starting from Take 77
* [Jumbo Hotfix Accumulator for R80.40](https://sc1.checkpoint.com/documents/Jumbo_HFA/R80.40/Default.htm) starting from Take 190

Check Point recommends to always upgrade to the [Recommended version](https://support.checkpoint.com/results/sk/sk95746) ([Security Gateway](https://support.checkpoint.com/product/Quantum/73) / [VSX](https://support.checkpoint.com/product/Quantum/359) / [Security Management Server](https://support.checkpoint.com/product/Quantum/184) / [Multi-Domain Security Management Server](https://support.checkpoint.com/product/Quantum/166) / [SmartConsole](https://support.checkpoint.com/product/Quantum/191)).

If you choose not to upgrade, [contact Check Point Support](https://www.checkpoint.com/support-services/contact-support/) to get a Hotfix for your version.

A Support Engineer will make sure the Hotfix is compatible with your environment before providing it.  
For faster resolution and verification, collect [CPinfo](https://support.checkpoint.com/results/sk/sk92739) files from the Management Server and Security Gateways / Cluster Members involved in the case.

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

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