NAT

NAT enables you to map from unregistered addresses to registered addresses allocated by your Internet service provider (ISP). The NAT function of SunScreen uses this translation to replace the IP addresses in a packet with other IP addresses. This allows you to use unregistered addresses to number your internal networks and hosts and yet have full connectivity to the Internet. With this approach, with a small Class C network, which supports only 254 hosts (externally), you can use a private Class B network, which supports as many as 65,000 hosts or 255 networks of 254 hosts (internally).

Table 2-6 NAT Map Table

Type	Address		Translated Address
Static/Dynamic	Source	Destination	Source	Destination

Table 2-7 Screen's Interfaces

Type	Interface Name	Group Address	Logging Details
			SNMP Alert	Logging	ICMP Reject

Table 2-8 Authorized Users

Name	Authorized User	Details

Table 2-9 Administration Stations

Name of Certificate associated with Admin Station	Address of  Admin Station	Key Algorithm	Data Algorithm	MAC Algorithm	Admin User Name	Access Level