Can't configure Cisco 891-K9 to access Internet.

Hello

I'm having trouble to configure My 891-K9 Cisco Router. Internet is not working in the lan and from the router I can't ping DNS 8.8.8.8. Please some help ould be appreciated. Here my running setup:

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ip dhcp excluded-address 192.168.1.1 192.168.1.30
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ip dhcp pool vlan1pool
import all
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
dns-server 8.8.8.8 8.8.4.4
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ip cef
no ipv6 cef
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multilink bundle-name authenticated
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license udi pid CISCO891-K9 sn FGL151121NE
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username vehadmin privilege 15 password 0 905itiah
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redundancy
!
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interface FastEthernet0
no ip address
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interface FastEthernet1
no ip address
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interface FastEthernet2
no ip address
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interface FastEthernet3
no ip address
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interface FastEthernet4
no ip address
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interface FastEthernet5
no ip address
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interface FastEthernet6
no ip address
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interface FastEthernet7
no ip address
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interface FastEthernet8
ip address dhcp
ip nat outside
ip virtual-reassembly in
duplex auto
speed auto
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interface GigabitEthernet0
no ip address
shutdown
duplex auto
speed auto
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interface Vlan1
ip address 192.168.1.1 255.255.255.0
ip nat inside
ip virtual-reassembly in
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interface Async1
no ip address
encapsulation slip
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ip default-gateway 192.168.1.1
ip forward-protocol nd
ip http server
ip http authentication local
ip http secure-server
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ip nat inside source list 1 interface FastEthernet8 overload
ip route 0.0.0.0 0.0.0.0 FastEthernet8
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access-list 1 permit 192.168.1.0 0.0.0.255
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