> Source: [sk155152](https://support.checkpoint.com/results/sk/sk155152)

# sk155152 - FTP high port data traffic dropped by implied rules with error message "Violated unidirectional connection"

| Property | Value |
|----------|-------|
| Solution ID | sk155152 |
| Date Created | 2019-06-08 |
| Last Modified | 2021-04-07 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R82.10, R82, R81.20 |
| OS | Gaia |

## Symptoms

- * FTP high port data traffic is dropped by implied rules with error message "Violated unidirectional connection".
* Logs show that a connection is opened and accepted by a rule with the service "FTP" on port 21.

## Cause

By default, the Internal Protocol Handler for FTP is "Match for \*Any".

If a custom service is created with "Match for \*Any" selected, and the port range overlaps the FTP high ports, this will cause a conflict with the protocol handler.

## Solution

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

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