配置PAT
[H3C]nat address-group 1
[H3C-address-group-1]address 10.0.0.2 10.0.0.2
[H3C-address-group-1]port-block block-size 65535
[H3C]interface GigabitEthernet 0/0
[H3C-GigabitEthernet0/0]nat outbound
启用telnet
telnet server enable
line vty 0 4
authentication-mode none
[H3C-line-vty0-4]user-role level-15
配置内部服务器
[H3C]int ge0/0
[H3C-GigabitEthernet0/0]nat server protocol tcp global 10.0.0.2 23 inside 172.16.0.100 23