> Source: [sk182271](https://support.checkpoint.com/results/sk/sk182271)

# sk182271 - PPPoE connection fails when the username contains a special character 

| Property | Value |
|----------|-------|
| Solution ID | sk182271 |
| Date Created | 2024-05-02 |
| Last Modified | 2024-05-05 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R81.20, R81.10 (EOS), R81 (EOS) |

## Symptoms

- PPPoE connection fails when a username contains a special character.

## Cause

By default, on UNIX Operating Systems, usernames must match this regex:  

`NAME_REGEX="^[a-z][-a-z0-9_]*\$`"  

As a result, the username must:  

* start with a lowercase letter
* contain only lowercase letters, digits, underscores, hyphens, and periods (full stops)

## Solution

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

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