> Source: [sk122478](https://support.checkpoint.com/results/sk/sk122478)

# sk122478 - 3rd party VPN peer rejects IDs proposed in IKE phase 2 and tunnel not established (unless initiated from peer side)

| Property | Value |
|----------|-------|
| Solution ID | sk122478 |
| Date Created | 2018-01-21 |
| Last Modified | 2019-04-30 |
| Technical Level | Advanced |

## Symptoms

- * 3rd party VPN peer rejects the IDs proposed in IKE phase 2 and the tunnel is not established (unless initiated from peer side).
* Supernetting is disabled (ike_enable_supernet = false), but the Security Gateway proposes subnets that are not always based on the network objects in the encryption domain

## Cause

Encryption domain overlaps are not supported and undefined behavior may occur if they are configured.

## Solution

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

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