> Source: [sk115435](https://support.checkpoint.com/results/sk/sk115435)

# sk115435 - VPN Site-to-Site going through an SMB appliance is not established

| Property | Value |
|----------|-------|
| Solution ID | sk115435 |
| Date Created | 2017-01-09 |
| Last Modified | 2022-07-24 |
| Technical Level | Advanced |
| Products | Spark Firewall (Locally Managed) |
| Versions | R81.10.X |
| Platform | 1500, 1600, 1800, 910 |

## Symptoms

- * VPN Site-to-Site can not be established through an SMB appliance.
* Can't forward UDP 4500 to internal network.

## Solution

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