Lab 10: Default Route and NAT

                                                                        
            192.168.10.0/24               23.1.1.0/24                       
                              NAT                     ISP               
  ----- f0/0          f0/0   -----  f0/1          f0/0 -----             
 | R1  | ────────────────── | R2  |──────────────────| R3  |            
  -----   .1             .2  ----- .2             .3  -----             
.254│ f0/1                                         lo1: 8.8.8.8/24
    │                                                                   
    │                                                                   
 .1 │   192.168.1.0/24                                                  
   __  _                                                                
  [__]|=|                                                               
  /::/|_|                                                               
   PC1                                                                  

Static Route

! R2
ip route 192.168.1.0 255.255.255.0 192.168.10.1 

Default Route on R1

ip route 0.0.0.0 0.0.0.0 192.168.10.2 

Default Route on R2

ip route 0.0.0.0 0.0.0.0 23.1.1.3

NAT (PAT)

! R2
access-list 1 permit any
ip nat inside source list 1 inter f0/1 overload

inter f0/1
ip nat outside
exi

inter f0/0
ip nat inside
exi