Berikut ini beberapa contoh rules
IPTables:
server:/#
iptables -F à flush tabel filter
server:/#
iptables -t nat -F à flush tabel nat
server:/#
iptables -P INPUT ACCEPT à Set policy ACCEPT
chain INPUT
server:/#
iptables -P OUTPUT ACCEPT à Set policy ACCEPT
chain OUTPUT
server:/#
iptables -P FORWARD ACCEPT à Set policy ACCEPT
chain FORWARD
server:/#
iptables-save > /etc/iptables-kosong à Simpan ke
/etc/iptables-kosong
Saat dibutuhkan kondisi “kosong” tanpa filter, maka lakukan restore dari
file /etc/iptables-kosong : server # iptables-restore < /etc/iptables-kosong
Contoh rules / aturan masquerade
atau IP Forwarding pada Debian Lenny:
server:/# # iptables -t nat -A POSTROUTING
-o eth0 -j MASQUERADE
è Tapi settingan iptables tersebut hanya sementara,saat reboot akan hilang
è Cara agar Permanen :
a. Forwarding
#iptables -t nat -A POSTROUTING -o
eth0 -j MASQUERADE
b. Simpan kefile mana saja, misal : /etc/iptables.rules
#iptables-save > /etc/iptables.rules
c. Edit / Tambahkan di baris paling bawah /etc/network/interfaces :
pre-up
iptables-restore < /etc/iptables.rules
post-down
iptables-save > /etc/iptables.rules
Next Tutorial :
1. Windows
XP SP2 and Debian Lenny 5.0.3 Installation
2. Sharing
files in Windows XP SP2 & Debian Lenny 5.03
3. Debian
Firewall Plus [more]
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