> Source: [sk36708](https://support.checkpoint.com/results/sk/sk36708)

# sk36708 - NAT table reaches its maximum capacity on R7X ClusterXL, which causes traffic issues 

| Property | Value |
|----------|-------|
| Solution ID | sk36708 |
| Date Created | 2008-12-25 |
| Last Modified | 2022-12-11 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R82.10, R82, R81.20 |

## Symptoms

- * "`NAT hide failure - there are currently no available ports for hide operation`" logs in SmartView Tracker.  

* Kernel NAT Table (fwx_alloc , id 8187) reaches its maximum capacity, which causes traffic issues.

## Cause

1. The NAT table (*fwx_alloc*) is not properly synchronized between cluster members.
2. The cluster is defined as a HTTP/HTTPS Proxy
3. The *nat_limit* propety in *$FWDIR/conf/objects_5_0.C*file on the Security Management server is set to a limit other than (0) that is less than the number of NAT connections.

## Solution

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