> Source: [sk30470](https://support.checkpoint.com/results/sk/sk30470)

# sk30470 - "SSH version 1.X is not allowed" message in SmartView Tracker

| Property | Value |
|----------|-------|
| Solution ID | sk30470 |
| Date Created | 2005-01-31 |
| Last Modified | 2021-04-07 |
| Technical Level | General |
| Products | Security Gateway |
| Versions | R81 (EOS) |

## Symptoms

- "SSH version 1.X is not allowed" error in SmartView Tracker when Trying to initiate SSH from a client behind a Security gateway.

## Cause

The service object "`ssh_version_2`" is used in the rule, but it does not allow backwards compatibility for SSH version 1.

## Solution

To allow SSH version 1 traffic, use the predefined TCP service object "`ssh`".   

The predefined `ssh` service object allows all SSH versions, while the "`ssh_version_2`" service object only allows SSH version 2.

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