Router config for gateway

Here is how to setup a router for gateway on a network of 10.10.10.0/24 on fa0/0 with a public ip of 12.x.44.248/29 on e1/0

>en
#config t
(config)#int fa0/0
(config-if)#ip address 10.10.10.254 255.255.255.0
(config-if)#no shutdown
(config-if)#exit
(config)#int e1/0
(config-if)#ip address 12.x.44.251 255.255.255.248
(config-if)#no shutdown
(config-if)#exit
(config)#exit
#wr mem
#config t
(config)#int fa0/0
(config-if)#ip nat inside
(config-if)#exit
(config)#int e1/0
(config-if)#ip nat outside
(config-if)#exit
(config)#access-list 10 permit 10.10.10.0 0.0.0.255
(config)#ip nat inside source list 10 interface e1/0 overload
(config)#ip route 0.0.0.0 0.0.0.0 12.x.44.249
(config)#end
#wr mem