NAT，Easy IP

R3配置

[V200R003C00]
#
 snmp-agent local-engineid 800007DB03000000000000
 snmp-agent 
#
 clock timezone Indian Standard Time minus 05:13:20
 clock daylight-saving-time Day Light Saving Time repeating 12:32 9-1 12:32 11-23 00:00 2005 2005 
#
 drop illegal-mac alarm
#
 set cpu-usage threshold 80 restore 75
#
acl number 2000  
 rule 5 permit source 192.168.0.0 0.0.0.255 
#
aaa 
 authentication-scheme default
 authorization-scheme default
 accounting-scheme default
 domain default 
 domain default_admin 
 local-user admin password cipher %$%$K8m.Nt84DZ}e#<0`8bmE3Uw}%$%$
 local-user admin service-type http
#
firewall zone Local
 priority 15
#
interface GigabitEthernet0/0/0
 ip address 192.168.0.1 255.255.255.0 
#
interface GigabitEthernet0/0/1
 ip address 202.10.1.2 255.255.255.0 
 nat outbound 2000
#
interface GigabitEthernet0/0/2
#
interface NULL0
#
ip route-static 0.0.0.0 0.0.0.0 202.10.1.1
#
user-interface con 0
 authentication-mode password
user-interface vty 0 4
user-interface vty 16 20
#
wlan ac
#
return

R4配置

[V200R003C00]
#
 snmp-agent local-engineid 800007DB03000000000000
 snmp-agent 
#
 clock timezone Indian Standard Time minus 05:13:20
 clock daylight-saving-time Day Light Saving Time repeating 12:32 9-1 12:32 11-23 00:00 2005 2005 
#
 drop illegal-mac alarm
#
 set cpu-usage threshold 80 restore 75
#
aaa 
 authentication-scheme default
 authorization-scheme default
 accounting-scheme default
 domain default 
 domain default_admin 
 local-user admin password cipher %$%$K8m.Nt84DZ}e#<0`8bmE3Uw}%$%$
 local-user admin service-type http
#
firewall zone Local
 priority 15
#
interface GigabitEthernet0/0/0
 ip address 202.10.1.1 255.255.255.0 
#
interface GigabitEthernet0/0/1
#
interface GigabitEthernet0/0/2
#
interface NULL0
#
user-interface con 0
 authentication-mode password
user-interface vty 0 4
user-interface vty 16 20
#
wlan ac
#
return

在R3查看NAT

PC1长ping 202.10.1.1，在R3的g 0/0/0抓包