> Source: [sk114794](https://support.checkpoint.com/results/sk/sk114794)

# sk114794 - SSH login fail for TACACS users with "access denied" error

| Property | Value |
|----------|-------|
| Solution ID | sk114794 |
| Date Created | 2016-12-07 |
| Last Modified | 2023-04-26 |
| Technical Level | Advanced |
| Products | Security Gateway, Security Management Server, Multi-Domain Security Management Server |
| Versions | R82.10, R82, R81.20, R82.10, R82, R81.20, R82.10, R82.20, R81.20, R82, R82.20 |
| OS | Gaia |

## Symptoms

- * On the Check Point Security Gateway/Security Management/Multi-Domain Server, user is able to log in via Console and Gaia Portal with TACACS authentication, but when trying to log in via SSH using TACACS the user receives - "access denied".
* When attempting to login via SSH - no traffic is seen leaving the Check Point appliance to the TACACS Server.
* /var/log/messages show:  
  `sshd[PID]: User <username> from <host ip> not allowed because none of user's groups are listed in AllowGroups`  
  `
  sshd[PID2]: input_userauth_request: invalid user <username>`  
  `
  sshd[PID]: error: Could not get shadow information for NOUSER`  
  `
  sshd[PID]: Failed password for invalid user <username> from <host ip> port 51658 ssh2`
* Viewing the `/etc/ssh/sshd_config` file shows an older version, eg.: sshd_config,v 1.59
* The machine was upgraded from Splat to Gaia.

## Cause

When the appliance is upgraded from SecurePlatform to Gaia, the "sshd_config" file should be replaced, and in rare instances this process does not happen.

## Solution

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

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