Explain the NAT table on the diagram

Untrusted network Web Server Proxy Server SMTP Server 10.10.10.5 10.10. 10.6 10.10.10.4 Demilitarized zone (DMZ) External Filtering Switch nternal Filtering Router Router Ext IP-10, 10.10.1 Ext IP 10.10.10.3 Int IP 10.10.10.2 Int IP 192.168.2.1 Trusted network Internal Server Firewall Admin IP: 192.168.2.2 IP: 192.168.2.3 NAT Table NT Address EXT Address 192.168.2.1 10.10.10.7 192.168.2.2 10.10.10.8 192.168.2.3 0.10.10.10