Setting Internet Connection Sharing (ICS) di Ubuntu Linux

Setting Internet Connection Sharing – ICS di Ubuntu Linux adalah bahasan berikutnya dalam seri Tutorial Linux di Blog asal-asalan ini. Internet Connection Sharing atau berbagi koneksi internet memungkinkan kita untuk membagi koneksi internet ke komputer / laptop lain di dalam jaringan kantor atau rumah kita, baik melalui kabel maupun nirkabel (wireless) menggunakan WIFI. Komputer yang terhubung ke internet, misal menggunakan modem ADSL, akan bertindak sebagai Internet Gateway untuk komputer2 lainnya. Di komputer linux, hal ini sangat mudah dilakukan, dengan memanfaatkan tools iptables. Nah yuk mulai kita bahas setting Internet Gateway atau Internet Connection Sharing di Ubuntu Linux ini..

Tutorial Linux kali ini memakai asumsi komputer yang digunakan sebagai internet gateway memiliki 2 ethernet Card, yaitu eth0 yang terhubung ke modem, dan eth1 yang terhubung ke switch hub atau jaringan lokal.

Berikut ini Langkah2 untuk Setting Internet Connection Sharing di Ubuntu Linux

1. Seting static IP, baik untuk eth0 maupun eth1, langkah2 nya bisa dilihat di posting terdahulu tentang cara setting static IP address

2. Konfigurasi NAT (Network Address Translation )

Buka Terminal lalu copy paste perintah2 dibawah ini

#sudo iptables -A FORWARD -i eth0 -o eth1 -s 192.168.2.0/24 -m conntrack --ctstate NEW -j ACCEPT

#sudo iptables -A FORWARD -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT

#sudo iptables -A POSTROUTING -t nat -j MASQUERADE




2. Aktifkan Routing

#sudo sh -c "echo 1 > /proc/sys/net/ipv4/ip_forward"


3. Edit File /etc/sysctl.conf

#sudo vi /etc/sysctl.conf

lalu tambahkan baris2 berikut (letakkan pada baris paling bawah)

net.ipv4.conf.default.forwarding=1

net.ipv4.conf.all.forwarding=1

4. Agar perubahan bisa tetap berjalan setelah anda restart, maka perlu edit file /etc/rc.local

#sudo gedit /etc/rc.local

sisipkan setting NAT dan aktivasi routing sebelum baris exit 0

iptables -A FORWARD -i eth0 -o eth1 -s 192.168.2.0/24 -m conntrack –ctstate NEW -j ACCEPT


iptables -A FORWARD -m conntrack –ctstate ESTABLISHED,RELATED -j ACCEPT

iptables -A POSTROUTING -t nat -j MASQUERADE

echo 1 > /proc/sys/net/ipv4/ip_forward

Selesai sudah, komputer yang terhubung dengan jaringan lokal anda, bisa ikut menikmati koneksi melalui komputer anda setelah Setting Internet Connection Sharing di Ubuntu Linux ini anda aplikasikan, semoga bermanfaat.

Contoh lain

# Ifconfig ethX ip

mana ethX adalah kartu jaringan dan ip server Anda diinginkan alamat ip (192.168.0.1 Biasanya digunakan)

Lalu konfigurasikan sebagai berikut NAT

# Iptables-t nat-A ethX-j MASQUERADE POSTROUTING-o

mana ethX adalah kartu jaringan yang Internet datang dari

# Echo 1> / proc/sys/net/ipv4/ip_forward

Install dnsmasq dan ipmasq dengan perintah berikut

# Apt-get install dnsmasq ipmasq

Restart dnsmasq menggunakan perintah berikut

# / Etc / init.d / dnsmasq restart

Reconfigure ipmasq dimulai setelah jaringan telah dimulai

# Dpkg-reconfigure ipmasq

Mulailah dengan mengkonfigurasi kartu jaringan yang interface ke komputer lain pada jaringan Anda

# Ifconfig ethX ip

mana ethX adalah kartu jaringan dan ip server Anda diinginkan alamat ip (192.168.0.1 Biasanya digunakan)

Lalu konfigurasikan sebagai berikut NAT

# Iptables-t nat-A ethX-j MASQUERADE POSTROUTING-o

mana ethX adalah kartu jaringan yang Internet datang dari

# Echo 1> / proc/sys/net/ipv4/ip_forward

Tambahkan baris "net.ipv4.ip_forward = 1" ke / etc / sysctl.conf

# gedit / etc / sysctl.conf

Reboot sistem anda adalah opsional.

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Biography Ari Bernardus Lasso

Biography Ari Bernardus Lasso

Not easy to escape from bondage, narcotics and dangerous drugs other. Veteran singer Ari Bernardus Lasso, or better known as Ari Lasso never felt it that became the darkest part of his life journey. As a result of drug mengakrabi, born in Madiun, East Java, January 17, 1973 was expelled from the band Dewa 19 who raised his name. In fact, Ari's musical career was pretty much brilliant.

Ari first time into the music world was when he sat on the bench High School 2 Surabaya. Joint Interview Satrio Juniarso and Yudi Wahyono, Ari formed band called Outsider Band. Having considered his experience, he joined a rock band, Los Angeles band. Feeling less suitable, in 1993 Ari then switch to the Down Beat music group, which digawangi Ahmad Dhani, Wong Aksan, Andra Ramadhan, and Erwin Prasetya. Apparently Ari fit after a couple of times for music with my three new friends.

Later, Ari and four other personnel of Down Beat, decided to rename the band into Dewa 19 in the same year. Through a long struggle, they finally made it into the kitchen recording. Not in vain the fifth business personnel. Dewa 19's first album titled Sam, went on to become best-selling album version Badische Anilin Soda Fabrik (BASF). After the performance was achieved, the next three albums sold hundreds of thousands of copies. Thanks to this, the name Ari Lasso soared.

Ari is in the wind unable to control himself. After the fourth album released Dewa 19, Ari began taking drugs. Ari bad habit is opposed by other personnel. Dhani - Ahmad Dhani so familiarly called - take bold decisions. He took Ari from the band in 1997.

After four years against the influence of drugs. Ari finally managed to escape from bondage, amphetamine type of shabu-shabu. Ex-personnel Dewa 19 was returned to enliven the local music scene by releasing a solo album titled Self First. This album is a success through tembang gacoannya, Divine Mystery. Ari success working on this album, not separated from aid Bebi Romeo, Erwin, and Andra.

In 2003, Ari released his second album, Balance. It did not take long, a year later he returned to sell his show, I saw through the album, I hear, I think that quite successfully. One of the songs in this album was selected as a movie soundtrack Chasing the Sun. After the film is thrown into the market, bespectacled man had launched the fourth album, Always There.

In 2007, Ari released the album The Best Of. Album contains 12 tembang has several hits including Where I know, and Women's Secret, and Me and You. In the song Me and You, a duet with singer Ari pretty Bunga Citra Lestari.

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