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by. oggix.com

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cara seting router warnet

eth0 ------- MGW ------ eth1 --------------------hub---------------------- --------- --------- --------- Client 01 Client 02 Client 03 --------- --------- ---------
Pertama yang harus di lakukan adalah mensetting mgw(main gateway) supaya bisa connect ke internetSebelum Mensetting :1.Minta IP public ke ISP lengkap dengan netmask,broadcast dan dns nyamisalnya :RANGE : 202.159.121.0/29IP : 202.159.121.2GATEWAY : 202.159.121.1Nemast : 255.255.255.248broadcast : 202.159.121.7DNS1 : 202.159.0.10DNS2 : 202.159.0.20berarti kita mendapatkan ip 5 buah dari 202.159.121.2 - 202.159.121.6
2.Menentukan IP local yang akan kita gunakan buat client
Setting IP MGW :1.[root@mgw cachak]$ vi /etc/sysconfig/networklalu isi dengan :
NETWORKING=yesHOSTNAME=mgw.domain.comGATEWAY=202.159.121.1
lalu simpen dengan menekan :wq
2.Menconfigurasi IP eth0(default)
[root@mgw root]$ vi /etc/sysconfig/network-scripts/ifcfg-eth0lalu isi dengan :
DEVICE=eth0BOOTPROTO=staticIPADDR=202.159.121.2BROADCAST=202.159.121.7NETMASK=255.255.255.249ONBOOT=yesUSERCTL=no
lalu simpen dengan menekan :wq
3.Setting dns resolve
[root@mgw root]$ vi /etc/resolve.conflalu isi dengan nameserver dari isp kita tadi :
nameserver 202.159.0.10nameserver 202.159.0.20
lalu simpen dengan menekan :wq
4.Setting ip_forwarding
[root@mgw cachak]$ vi /etc/sysctl.conf
rubah net.ipv4.ip_forward = 0 menjadi net.ipv4.ip_forward = 1atau kalau gak ada net.ipv4.ip_forward = 0 tambahin net.ipv4.ip_forward = 1
simpen dengan menekan :wq
5.restart network[root@mgw cachak]$ /etc/init.d/network restartShutting down interface eth0: [ OK ]Shutting down loopback interface: [ OK ]Disabling IPv4 packet forwarding: [ OK ]Setting network parameters: [ OK ]Bringing up loopback interface: [ OK ]Bringing up interface eth0: [ OK ]
[root@www root]#chkconfig --level 2345 network on[root@www root]#
6.testing dengan ngeping ke default gateway 202.159.121.1
[root@mgw cachak]$ ping 202.159.121.1PING 202.159.121.1 (202.159.121.1) 56(84) bytes of data.64 bytes from 202.159.121.1: icmp_seq=1 ttl=63 time=0.356 ms64 bytes from 202.159.121.1: icmp_seq=2 ttl=63 time=0.269 ms64 bytes from 202.159.121.1: icmp_seq=3 ttl=63 time=0.267 ms64 bytes from 202.159.121.1: icmp_seq=4 ttl=63 time=0.268 ms
--- 202.159.121.1 ping statistics ---4 packets transmitted, 4 received, 0% packet loss, time 2997msrtt min/avg/max/mdev = 0.267/0.290/0.356/0.038 ms
7.testing untuk ngeping google.com untuk ngecek dns nyakalau muncul :PING google.com (216.239.39.99) 56(84) bytes of data. berarti dns kita untuk mgw dah bekerja, tapi kalau muncul : ping: unknown host google.comberarti dns yang kita isikan di /etc/resolve.conf masih salah,silahkan cek lagi ke ISP nya :)
nah bereskan sudah setting IP untuk mgw nya :)supaya mgw ini bisa sekaligus di gunakan sebagai ns server oleh client maka harus di install daemon bind atau daemon nameserver yang lainataukalau sudah ada tinggal idupin Bind nya
[root@www root]# /etc/init.d/named restartStopping named: [ OK ]Starting named: [ OK ][root@www root]#chkconfig --level 2345 named on[root@www root]#
misalnya ip ke client adalah :192.168.0.1/24IP : 192.168.0.1netmask : 255.255.255.0broadcast : 192.168.0.255RANGE IP CLIENT : 192.168.0.2-192.168.0.254
Setting ip untuk eth1 (yang ke client)1.memberi IP 192.168.0.1 di eth1[root@mgw cachak]$ vi /etc/sysconfig/network-scripts/ifcfg-eth1lalu isi dengan :
DEVICE=eth1BOOTPROTO=staticIPADDR=192.168.0.1NETMASK=255.255.255.0BROADCAST=192.168.0.255ONBOOT=yesUSERCTL=no
lalu simpen dengan menekan :wq
2.Restart networknya
[root@mgw root]$ /etc/init.d/network restartShutting down interface eth0: [ OK ]Shutting down interface eth1: [ OK ]Shutting down loopback interface: [ OK ]Disabling IPv4 packet forwarding: [ OK ]Setting network parameters: [ OK ]Bringing up loopback interface: [ OK ]Bringing up interface eth0: [ OK ]Bringing up interface eth1: [ OK ]
3.Testing dengan cara ping ip eth1[root@mgw cachak]$ ping 192.168.0.1PING 192.168.0.1 (192.168.0.1) 56(84) bytes of data.64 bytes from 192.168.0.1: icmp_seq=1 ttl=63 time=0.356 ms64 bytes from 192.168.0.1: icmp_seq=2 ttl=63 time=0.269 ms64 bytes from 192.168.0.1: icmp_seq=3 ttl=63 time=0.267 ms64 bytes from 192.168.0.1: icmp_seq=4 ttl=63 time=0.268 ms
--- 192.168.0.1 ping statistics ---4 packets transmitted, 4 received, 0% packet loss, time 2997msrtt min/avg/max/mdev = 0.267/0.290/0.356/0.038 ms
Tinggal Setting IP computer client dengan ketentuan di bawah ini :
IP : 192.168.0.2 - 192.168.0.254GATEWAY : 192.168.0.1NETMASK : 255.255.255.0BROADCAST : 192.168.0.255NAMESERVER : 192.168.0.1
misal :
Client01===============================IP : 192.168.0.2GATEWAY : 192.168.0.1NETMASK : 255.255.255.0BROADCAST : 192.168.0.255NAMESERVER : 192.168.0.1
Client02===============================IP : 192.168.0.3GATEWAY : 192.168.0.1NETMASK : 255.255.255.0BROADCAST : 192.168.0.255NAMESERVER : 192.168.0.1
dan seterusnya sesuai banyaknya client,yang berubah hanya IPuntuk client windows maka setting IP di bagian Start Menu/Setting/Control Panel/Network
setelah di setting ip client, maka coba ping ke 192.168.0.1 dari client,kalau berhasil berarti client dan MGW nya sudah tersambung.
Setting MGW supaya client bisa internat dengan menggunakan NAT
1.Matikan iptablesnya
[root@mgw root]# /etc/init.d/iptables stopFlushing all chains: [ OK ]Removing user defined chains: [ OK ]Resetting built-in chains to the default ACCEPT policy: [ OK ][root@mgw root]#
2.Tambahkan iptables untuk Source NAt sesuai dengan ip di eth0[root@mgw root]# /sbin/iptables -t nat -A POSTROUTING -o eth0 -s 192.168.0.0/24 -j SNAT --to-source 202.159.121.2[root@mgw root]# /sbin/iptables-save > /etc/sysconfig/iptables[root@mgw root]# /etc/init.d/iptables restartFlushing all current rules and user defined chains: [ OK ]Clearing all current rules and user defined chains: [ OK ]Applying iptables firewall rules: [ OK ][root@mgw root]# iptables-save
SNAT sudah,SNAT disini standar sekali dan gak ada proteksiuntuk mengetest nya kita browser di client lalau buka google.com, kalau jalan berati kita sudah berhasil :)
January 25, 2007 Permalink Comments (0)
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iwan-keren

Saturday, November 25, 2006

iwan-aja

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