-# Active-Passive NAT HA
+# Active-Passive NAT HA {#nat_ha_doc}
## Introduction
The two NAT nodes have a dedicated link (interface GE0/0/3 on both) to synchronize NAT sessions using NAT HA protocol.
+```
+-----------------------+
| outside network |
+-----------------------+
+-----------------------+
| inside network |
+-----------------------+
+```
### Active node configuration