The document provides instructions for configuring various services on a Debian 5 (Lenny) system including the network interface, routing, proxy, DHCP, DNS, and mail server. It includes examples for modifying configuration files like /etc/network/interfaces, /etc/rc.local, and /etc/squid/squid.conf to set up these services. The instructions also cover installing and configuring packages like squid, bind9, postfix, dovecot, and courier to set up the proxy, DNS, and mail server functionality.

1. 26 Januari 2012 EXIT
INTERFAC
ROUTING PROXY DHCP DNS MAIL
E
KONFIGURASI DEBIAN 5 Debian Lenny

2. INTERFACE
Konfigurasi Debian 5 (Lenny)
Konfigurasi NIC
# nano /etc/network/interfaces
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
auto eth0
iface eth0 inet static
address 192.168.4.118
netmask 255.255.255.0
network 192.168.4.0
broadcast 192.168.4.255
gateway 192.168.4.1
# dns-* options are implemented by the resolvconf package, if installed
dns-nameservers 192.168.18.81
dns-search syaif.edu
auto eth1
iface eth1 inet static
address 192.168.18.81
netmask 255.255.255.0
network 192.168.18.0
broadcast 192.168.18.255
N Tambahkan settingan seperti contoh di atas pada konfigurasi NIC anda.
KKTKJ Smk Kelas XII Ahmad Syaifudin

3. ROUTING
Konfigurasi Debian 5 (Lenny)
Konfigurasi Router
# nano /etc/rc.local
======== # nano /etc/sysctl.conf
• rc.local # nano /etc/resolv.conf
========
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
iptables -t nat -A PREROUTING -s 192.168.18.0/24 -p tcp --dport 80 -j REDIRECT --to-ports 3128
echo "1" > /proc/sys/net/ipv4/ip_forward
==========
• sysctl.conf
==========
net.ipv4.ip_forward = 1 (hilangkan tanda pagarnya)
==========
• resolv.conf
==========
search syaif.edu
nameserver 192.168.18.81
nameserver 192.168.4.1
N Tambahkan settingan seperti contoh di atas pada konfigurasi PC-Router anda.
KKTKJ Smk Kelas XII Ahmad Syaifudin

4. PROXY
Konfigurasi Debian 5 (Lenny)
Konfigurasi Proxy
# apt-get install squid
# Squid normally listens to port 3128 # nano /etc/squid/squid.conf
(Ctrl+w)  http_port 3128
http_port 3128 transparent
(Ctrl+w)  acl connect
(Ctrl+w)  and finally deny
acl CONNECT method CONNECT
acl situs dstdomain "/etc/squid/situs" # nano /etc/squid/situs
acl lan src 192.168.18.0/24
no_cache deny situs
http_acces deny situs
http_access allow lan
cache_mgr saif@syaif.edu
visible_hostname www.syaif.edu
# And finally deny all other access to this proxy
#http_access deny all
=======
File situs
=======
Masukkan alamat yang ingin di blokir di file situs
N “situs” dapar diganti apa saja, “dstdomain” dapat diganti “url_regex”.
KKTKJ Smk Kelas XII Ahmad Syaifudin

5. DHCP
Konfigurasi Debian 5 (Lenny)
Konfigurasi DHCP
# apt-get install dhcp3-server
# nano /etc/dhcp/dhcpd.conf
# A slightly different configuration for an internal subnet.
subnet 192.168.18.0 netmask 255.255.255.0 {
range 192.168.18.100 192.168.18.120;
option domain-name-servers 192.168.18.81;
option domain-name “syaif.edu";
option routers 192.168.18.81;
option broadcast-address 192.168.18.255;
default-lease-time 600;
max-lease-time 7200;
}
N Range dapat diisi sesuai keinginan kita, tergantung jumlah client.
KKTKJ Smk Kelas XII Ahmad Syaifudin

6. DNS
Konfigurasi Debian 5 (Lenny)
Konfigurasi DNS Halaman 1
# apt-get install bind9
=========== # nano /etc/bind/named.conf
• named.conf
===========
zone "syaif.edu" {
type master;
file "db.syaif";
};
zone "192.in-addr.arpa" {
type master;
file "db.192";
};
N Setting DNS anda seperti settingan di atas, untuk mengedit tampilan di (#nano /var/www/index.html)
KKTKJ Smk Kelas XII Ahmad Syaifudin

7. DNS
Konfigurasi Debian 5 (Lenny)
Konfigurasi DNS Halaman 2
* copy db.127 di /etc/bind ke /var/cache/bind/db.192
========== * copy db.local di /etc/bind ke /var/cache/bind/db.syaif
• db.smkitsi # nano /var/cache/bind/db.syaif
========== # nano /var/cache/bind/db.192
; * Pengujian (#nslookup syaif.edu)
; BIND data file for local loopback interface =======
; • db.192
$TTL 604800 =======
@ IN SOA syaif.edu. root.syaif.edu. ( ;
2 ; Serial ; BIND reverse data file for local loopback interface
604800 ; Refresh ;
86400 ; Retry $TTL 604800
2419200 ; Expire @ IN SOA syaif.edu. root.syaif.edu. (
604800 ) ; Negative Cache TTL 1 ; Serial
; 604800 ; Refresh
@ IN NS syaif.edu. 86400 ; Retry
@ IN A 192.168.18.81 2419200 ; Expire
www IN A 192.168.18.81 604800 ) ; Negative Cache TTL
mail IN A 192.168.18.81 ;
@ IN NS syaif.edu.
81.18.168 IN PTR www.syaif.edu.
81.18.168 IN PTR mail.syaif.edu.
N Setting DNS anda seperti settingan di atas, dan perhatikan pemakaian tanda titik setelah URL.
KKTKJ Smk Kelas XII Ahmad Syaifudin

8. MAIL
Konfigurasi Debian 5 (Lenny)
Konfigurasi Mail Server Halaman 1
# apt-get install postfix
======= # apt-get install dovecot-imapd
• Postfix # apt-get install courier-imap
======= # apt-get install courier-pop
Ok  Internet Site  syaif.edu # apt-get install squirrelmail
=================== # apt-get install apache2
• Courier-imap courier-pop # nano /etc/apache2/apache2.conf
==================== # nano /etc/squirrelmail/apache.conf
No # maildirmake /etc/skel/Maildir
============ ===========
• Apache2.conf • Apache.conf
============ ===========
# Include the virtual host configurations: # users will prefer a simple URL like
Include /etc/apache2/sites-enabled http://webmail.example.com
Include /etc/squirrelmail/apache.conf #<VirtualHost 1.2.3.4>
# DocumentRoot /usr/share/squirrelmail
# ServerName webmail.example.com
#</VirtualHost>
<VirtualHost *:80>
DocumentRoot /usr/share/squirrelmail
ServerName mail.syaif.edu
</VirtualHost>
N Setting Mail Server anda seperti settingan di atas.
KKTKJ Smk Kelas XII Ahmad Syaifudin

9. MAIL
Konfigurasi Debian 5 (Lenny)
Konfigurasi Mail Server Halaman 2
# dpkg-reconfigure postfix
====================== # nano /etc/postfix/main.cf
dpkg-reconfigure postfix # adduser admin
======================
Ok  Internet Site  smkitsi.edu  biarkan kosong  tambahkan (,192.168.18.81/24)  No  tambahkan
(,192.168.18.81/24)  No  0  +  ipv4
========
• main.cf
========
inet_interfaces = all
inet_protocols = ipv4
home_mailbox = Maildir/
N Setting Mail Server anda seperti settingan di atas, admin dapat diganti nama anda alias terserah.
KKTKJ Smk Kelas XII Ahmad Syaifudin