The Problem Of Cisco 3845 Exit Router

Question: Cisco 3845 is used as exit router. What is the problem with the configuration below? The Local Area Network can not be found.

Current configuration : 1111 bytes
!
! Last configuration change at 06:35:58 UTC Tue Dec 26 2017
!
version 15.0
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
!
dot11 syslog
ip source-route
!
!
ip cef
!
!
no ipv6 cef
multilink bundle-name authenticated
!
!
!
!
voice-card 0
!
!
!
!
!
!
!
!
!
!
license udi pid CISCO3845-MB-C/K9 sn FOC16053MU6
!
!
!
!
!
!
!
interface GigabitEthernet0/0
ip address 2...26 255.255.255.248 ip nat outside ip virtual-reassembly duplex auto speed auto media-type rj45 ! interface GigabitEthernet0/1 ip address 192.168.20.253 255.255.255.0 ip nat inside ip virtual-reassembly duplex auto speed auto media-type rj45 ! ip forward-protocol nd ! ! no ip http server no ip http secure-server ip nat pool wan-pool 2...26 2...26 netmask 255.255.255.248 ip nat inside source list 1 pool wan-pool overload ip route 0.0.0.0 0.0.0.0 2...25
!
!
!
!
control-plane
!
!
!
!
!
!
!
line con 0
line aux 0
line vty 0 4
login
!
scheduler allocate 20000 1000
end

Answer:
1. It can ping 2**.**.***.25 in the router, but PC (192.168.20.*) can not ping 2**.**.***.25.
2. You didn’t write down the list 1.
3. You didn’t write down the interface or IP address in this command(ip nat inside source list 1 pool wan-pool overload)

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