LAB 9 : Connecting Router GNS3 to the Internet

Sebelum kita bermain di gns3, silakan setting dulu ip pada interface tap0 pada pc kita, disini saya menggunakan os linux xubuntu.

deng@deng:~$ sudo nano /etc/network/interfaces

Selanjutnya, lakukan konfigurasi seperti dibawah ini

# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
iface tap0 inet tap0
        address 192.168.1.1
        netmask 255.255.255.0

Lakukan Konfigurasi iptables

deng@deng:~$ sudo nano /etc/rc.local
[sudo] password for deng: masukkanpasswordnyadisini
#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.

iptables -t nat -A POSTROUTING -o wlan0 -j MASQUERADE
iptables -A FORWARD -i tap0 -j ACCEPT
exit 0

jika sudah tekan Ctrl+x dan kemudian ketik y untuk menyimpan konfigurasi.

Langkah
selanjtunya buat topologi seperti pada gambar beriktu dan Set cloud --> configure -->
tap-->add tap0

Pada Router, lakukan configurasi ip address dan default route

[admin@MikroTik] > system identity set name=IDN_R1
[admin@IDN_R1] > ip address add address=192.168.1.2/24 interface=ether2
[admin@IDN_R1] > ip address print                                       
Flags: X - disabled, I - invalid, D - dynamic
 #   ADDRESS            NETWORK         INTERFACE                                                                                                                                             
 0   192.168.1.2/24     192.168.1.0     ether2                                                                                                                                                
[admin@IDN_R1] > ping 192.168.1.1
HOST                                     SIZE TTL TIME  STATUS                                                                                                                                
192.168.1.1                                56  64 10ms
192.168.1.1                                56  64 3ms 
192.168.1.1                                56  64 1ms 
192.168.1.1                                56  64 1ms 
    sent=4 received=4 packet-loss=0% min-rtt=1ms avg-rtt=3ms max-rtt=10ms
[admin@IDN_R1] > ip route add dst-address=0.0.0.0/0 gateway=192.168.1.1

[admin@IDN_R1] > ping 8.8.8.8                                         
HOST                                     SIZE TTL TIME  STATUS                                                                                                                                
8.8.8.8                                    56  55 62ms
8.8.8.8                                    56  55 41ms
8.8.8.8                                    56  55 28ms
8.8.8.8                                    56  55 31ms
    sent=4 received=4 packet-loss=0% min-rtt=28ms avg-rtt=40ms max-rtt=62ms

[admin@IDN_R1] > ping google.com
invalid value for argument address:
    invalid value of mac-address, mac address required
    invalid value for argument ipv6-address
    while resolving ip-address: could not get answer from dns server
[admin@IDN_R1] > ping www.google.com
invalid value for argument address:
    invalid value of mac-address, mac address required
    invalid value for argument ipv6-address
    while resolving ip-address: could not get answer from dns server

Lah kok nggak bisa, oooh Set DNS Server nya dulu yaa

[admin@IDN_R1] > ip dns set servers=8.8.8.8 allow-remote-requests=yes
[admin@IDN_R1] > ping www.google.com                                 
HOST                                     SIZE TTL TIME  STATUS                                                                                                                                
43.240.231.17                              56  56 15ms
43.240.231.17                              56  56 20ms
43.240.231.17                              56  56 21ms
    sent=3 received=3 packet-loss=0% min-rtt=15ms avg-rtt=18ms max-rtt=21ms

[admin@IDN_R1] > ping facebook.com 
HOST                                     SIZE TTL TIME  STATUS                                                                                                                                
173.252.90.36                              56  75 257ms
173.252.90.36                              56  75 256ms
173.252.90.36                              56  75 258ms
    sent=3 received=3 packet-loss=0% min-rtt=256ms avg-rtt=257ms max-rtt=258ms
   

Untuk langkah selanjutnya, yaitu menghubung pc yang berada dibawa router tersebut ke internet, insya Allah kita lanjutkan besok.

Tunggu tak benerin laptop dulu, ini ngepostnya juga make laptopnya temen. Semoga Anda sabar menanti..