sonicwall 一对一NAT配置实例（标准版）

假设拓扑：LAN  192.168.1.0/24  WAN  202.1.1.1，希望添加的内网邮件服务器 192.168.1.200，还拥有的公共地址 202.1.1.2。
配置步骤：
1、Network  One-to-One NAT
2、Select Enable One-to-One NAT
3、Click Add. The Add NAT Entry window is displayed
4、Enter in the IP address, 192.168.1.200, in the Private Range Begin field.
5、 Enter in the IP address, 208.1.1.2, in the Public Range Begin field.
6、 Enter in 1 in the Range Length field.
7、Click OK.
8、Click Apply.
9、Click Firewall, then Access Rules.
10、Click Add.
11、Configure the following settings:
Action - Allow
Service - SMTP POP3
Source - WAN
Destination - LAN 192.168.1.200
In the Options tab, select always from the Apply this Rule menu.
12、Click OK.