Cara PC client di gns3 menggunakan router cisco 

Konfigurasi router

1. klik kanan pada router

2. pilih console

3.  masukan perintah-perintah berikut:

-Router(config)# interface fa0/1

-Router(config-if)# ip address 192.168.1.1 255.255.255.0

-Router(config-if)# no shutdown

-Router(config)# ip dhcp pool CLIENT

-Router(dhcp-config)# network 192.168.1.0 255.255.255.0

-Router(dhcp-config)# default-router 192.168.1.1

-Router(dhcp-config)# dns-server 8.8.8.8

-Router(dhcp-config)# exit

-Router(config)# access-list 1 permit 192.168.1.0 0.0.0.255

-Router(config)# ip nat inside source list 1 interface fa0/0 overload

-Router(config)# interface fa0/0

-Router(config-if)# ip nat outside

-Router(config-if)# exit

Router(config)# interface fa0/1

Router(config-if)# ip nat inside

Router(config-if)# exit

4. klik kanan pada PC 

5. pilih console

6. masukan perintah berikut:

-ip dhcp

-ping google . jika berhasil maka akan keluar output berikut :

PC2> ping google.com

google.com resolved to 142.251.175.138

84 bytes from 142.251.175.138 icmp_seq=1 ttl=106 time=80.478 ms

84 bytes from 142.251.175.138 icmp_seq=2 ttl=106 time=39.524 ms

84 bytes from 142.251.175.138 icmp_seq=3 ttl=106 time=39.464 ms

84 bytes from 142.251.175.138 icmp_seq=4 ttl=106 time=39.014 ms

84 bytes from 142.251.175.138 icmp_seq=5 ttl=106 time=49.367 ms

-ping 8.8.8.8. jika berhasil maka akan keluar output berikut:

PC2> ping 8.8.8.8

84 bytes from 8.8.8.8 icmp_seq=1 ttl=113 time=39.500 ms

84 bytes from 8.8.8.8 icmp_seq=2 ttl=113 time=49.020 ms

84 bytes from 8.8.8.8 icmp_seq=3 ttl=113 time=50.405 ms

84 bytes from 8.8.8.8 icmp_seq=4 ttl=113 time=38.495 ms

84 bytes from 8.8.8.8 icmp_seq=5 ttl=113 time=48.683 ms