Hello,
a few things do not look right in your configuration. Make the changes/additions marked in bold. Make sure everything looks exactly like below, line by line. When you are finished, post the configuration again.
Current configuration : 1507 bytes
!
! No configuration change since last restart
version 15.1
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname EDULA_R1
!
boot-start-marker
boot-end-marker
!
no aaa new-model
!
no ipv6 cef
ip source-route
ip cef
!
ip dhcp excluded-address 192.168.1.1 192.168.1.20
!
ip dhcp pool Enterprise
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
dns-server 192.168.1.16
!
multilink bundle-name authenticated
!
crypto pki token default removal timeout 0
!
license udi pid CISCO1921/K9 sn FGL170424DE
!
interface Embedded-Service-Engine0/0
no ip address
shutdown
!
interface GigabitEthernet0/0
ip address dhcp
ip nat outside
ip virtual-reassembly in
duplex auto
speed auto
!
interface GigabitEthernet0/1
ip address 192.168.1.1 255.255.255.0
ip nat inside
ip virtual-reassembly in
duplex auto
speed auto
!
ip forward-protocol nd
!
no ip http server
no ip http secure-server
!
ip nat inside source list 1 interface GigabitEthernet0/0 overload
--> no ip route 192.168.1.0 255.255.255.0 GigabitEthernet0/0
--> ip route 0.0.0.0 0.0.0.0 GigabitEthernet0/0 dhcp
!
--> access-list 1 permit 192.168.1.0 0.0.0.255
!
control-plane
!
line con 0
line aux 0
line 2
no activation-character
no exec
transport preferred none
transport input all
transport output pad telnet rlogin lapb-ta mop udptn v120 ssh
stopbits 1
line vty 0 4
login
transport input all
!
scheduler allocate 20000 1000
end
