Senin, 10 Desember 2012

Pertemuan 14 : Proxy & Mail Server


Konfigurasi Proxy Server menggunakan Squid di CentOS

1. Pendahuluan
Squid adalah sebuah aplikasi perangkat lunak yang berjalan pada banyak platform sistem operasi dan salah satunya adalah Linux. Squid sendiri merupakan sebuah high-performance proxy caching server untuk web klien, yang sudah mendukung FTP, Ghoper dan HTTP data object. Berbeda dengan aplikasi perangkat lunak yang lama, Squid menangani semua permintaan tunggal ( single ), non-blocking, I/O-driver process.
Squid menyimpan meta data dan terutama hot-object yang disimpan di RAM, menyimpan DNS lookups, mendukung non-blocking DNS lookups, dan implementasi negative-caching jika permintaan gagal.
2. Internet Object Caching
Internet Object Caching adalah sebuah cara untuk menyimpan hasil permintaan internet-object ( seperti, data yang ada dari HTTP, FTP, dan cache sebagai ghoper protokol ) untuk membuat sebuah sitem dekat dengan permintaan daripada ke sumber aslinya. Web browser dapat menggunakan lokal squid cache sebagai proxy HTTP server, ini akan mengurangi waktu akses seperti halnya penghematan bandwidth sampai maximum 30% .
3. Installasi Squid Transparent
3.1 Kebutuhan Sistem
Sebuah komputer dengan sistem operasi CentOS 5.4 yang bisa dilihat pada tutorial yang terdapat pada situs ini.
3.2 Setup IP
Pada tutorial ini skema IP Address yang akan dipergunakan adalah sebagai berikut :
[Internet]—— Modem ——— eth0 ——— eth1
192.168.10.1    192.168.10.2    192.168.2.1
squid port 3128
Memasang masing – masing ip pada interfaces yang sudah didefinisikan sebelumnya.
#vim /etc/sysconfig/network-scripts/ifcfg-eth0
apabila sudah selesai melakukan editing ip address tekan [esc] lalu shift+: dan wq [Enter], lakukan hal yang sama terhadap ifcfg-eth1
#vim /etc/sysconfig/network-script/ifcfg-eth1
Restart network supaya melakukan perubahan yang sudah kita lakukan
#/etc/init.d/network restart
Memastikan bahwa kita sudah terkoneksi dengan baik ke internet lakukan dengan menggunakan ping
#ping google.com
3.3 Memasang Repository Indonesia
Untuk menghemat bandwith serta mempercepat proses download dari repository, repository akan diarahkan ke mirror repository yang ada di indonesia, salah satunya adalah http://pandawa.ipb.ac.id/
Masuk direktori konfigurasi repository berada
#cd /etc/yum.repo.d/
Rename konfigurasi asli
#mv CentOS-Base.repo CentOS-Base.ori
Download konfigurasi indonesia
#wget http://pandawa.ipb.ac.id/centos.repo
Rename konfigurasi
#mv centos.repo CentOS-Base.repo
Melakukan update sistem operasi dan aplikasi yang ada didalamnya
#yum update
3.4 Squid install
Apabila update sistem operasi beserta aplikasinya sudah selesai dilakukan maka skarang waktunya melakukan installasi Squid pada sistem, dengan cara :
Memastikan bahwa paket squid ada pada repository
#yum search squid
extras | 2.1 kB 00:00
updates | 1.9 kB 00:00
=============== Matched: squid =====================
squid.i386 : The Squid proxy caching server.
Paket squid berada pada repository dan selanjutnya melakukan installasi
#yum -y install squid
Masuk direktori squid berada
#cd /etc/squid
Merename konfigurasi squid.
#mv squid.conf squid.conf.default
Membuat konfigurasi squid baru, perintah di bawah ini dimaksudkan menghilangkan seluruh text yang mengandung # di depannya dan menyimpannya menjadi konfigurasi squid.conf
#cat squid.conf.default | sed ‘/ *#/d; /^ *$/d’ > squid.conf
Edit squid.conf untuk disesuaikan dengan kebutuhan dan dengan isi sebagai berikut
#vim squid.conf
hierarchy_stoplist cgi-bin ?
acl QUERY urlpath_regex cgi-bin \?
no_cache deny QUERY
hosts_file /etc/hosts
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern . 0 20% 4320
acl all src 0.0.0.0/0.0.0.0
acl manager proto cache_object
acl localhost src 127.0.0.1/255.255.255.255
acl to_localhost dst 127.0.0.0/8
acl purge method PURGE
acl CONNECT method CONNECT
cache_mem 1024 MB
http_access allow manager localhost
http_access deny manager
http_access allow purge localhost
http_access deny purge
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
acl lokal src 192.168.2.0/24 # Menambahkan ini
http_access allow localhost
http_access allow lokal # Menambahkan ini
http_access deny all
http_reply_access allow all
icp_access allow all
visible_hostname proxy.dimain.ku
httpd_accel_host virtual
httpd_accel_port 80
httpd_accel_with_proxy on
httpd_accel_uses_host_header on
coredump_dir /var/spool/squid
apbila semua sudah sesuai dengan kebutuhan yang diinginkan keluar dan jalankan squid
#/etc/init.d/squid start
3.5 Iptables
Squid sudah berjalan dengan tidak mengalami masalah maka jika server yang terpasang merupakan sebuah gateway bagi jaringan lokal dibelakangnya, perlu melakukan sebuah perintah untuk memaksa seluruh request / permintaan klien pada port 80 menuju port 3128 yang di kelola oleh squid dengan perintah :
#iptables -t nat -A PREROUTING -i eth1 -p tcp –dport 80 -j DNAT –to 192.168.2.1:3128
#iptables -t nat -A PREROUTING -i eth0 -p tcp –dport 80 -j REDIRECT –to-port 3128
note : apabila iptables belum tersedia lakukan installasi iptables dengan menggunakan YUM ( Yellow dog Update Management )
Untuk dapat mengetahui lebih jauh tentang bagaimana sebuah squid dapat di implementasikan kedalam sebuah jaringan lokal bisa merujuk pada situs – situs di bawah ini untuk dapat mendalami squid sedikit lebih dalam.
*      http://www.cyberciti.biz/tips/linux-setup-transparent-proxy-squid-howto.html
*      http://www.visolve.com/squid/squid30/contents.php
*      http://www.squid-cache.org/Doc/config/


Mail Server

Jalankan perintah berikut untuk menonaktifkan firewall:
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# system-config-firewall-tui

Jalankan perintah untuk mengedit "Device configuration" dan "DNS configuration"
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# system-config-network

Edit "Device configuration" dan "DNS configuration" berikut:
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Device configuration
Primary DNS Server   8.8.8.8
Secondary DNS Server 8.8.4.4
 
DNS configuration
Hostname        server.indoit.web.id
Primary DNS     8.8.8.8
Secondary DNS   8.8.4.4

Periksa konfigurasi jaringan anda:
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# ifconfig

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eth0      Link encap:Ethernet  HWaddr 08:00:27:69:A5:E9
          inet addr:192.168.10.20  Bcast:192.168.10.255  Mask:255.255.255.0
          inet6 addr: fe80::a00:27ff:fe69:a5e9/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:76 errors:0 dropped:0 overruns:0 frame:0
          TX packets:69 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:8516 (8.3 KiB)  TX bytes:7952 (7.7 KiB)
 
lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

Cek resolve Name Server anda
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# cat /etc/resolv.conf
Seharusnya output nameserver sebagai berikut
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nameserver 8.8.8.8
nameserver 8.8.4.4

Edit file vi /etc/hosts
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# vi /etc/hosts

Tambahkan beris kode berikut:
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127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
192.168.0.100   server.indoit.web.id     server
 
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6

Disable SELinux
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# vi /etc/selinux/config

Edit SELinux menjadi
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# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
#     enforcing - SELinux security policy is enforced.
#     permissive - SELinux prints warnings instead of enforcing.
#     disabled - No SELinux policy is loaded.
SELINUX=disabled
# SELINUXTYPE= can take one of these two values:
#     targeted - Targeted processes are protected,
#     mls - Multi Level Security protection.
SELINUXTYPE=targeted

Reboot CentOS Server Anda:
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# reboot

Tambahkan beberapa repositori
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# rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY*
# rpm --import http://dag.wieers.com/rpm/packages/RPM-GPG-KEY.dag.txt
# cd /tmp
# wget http://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.2-2.el6.rf.i686.rpm
# rpm -ivh rpmforge-release-0.5.2-2.el6.rf.i686.rpm
# rpm --import https://fedoraproject.org/static/0608B895.txt
# wget http://dl.fedoraproject.org/pub/epel/6/i386/epel-release-6-5.noarch.rpm
# rpm -ivh epel-release-6-5.noarch.rpm
# yum install yum-priorities

Edit /etc/yum.repos.d/epel.repo
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# vi /etc/yum.repos.d/epel.repo

Tambahkan kode
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priority=10

pada [epel] repositori diantara enabled=1 dan gpgcheck=1 sehingga menjadi
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[epel]
name=Extra Packages for Enterprise Linux 6 - $basearch
#baseurl=http://download.fedoraproject.org/pub/epel/6/$basearch
mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-6&arch=$basearch
failovermethod=priority
enabled=1
priority=10
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6

Lakukan Update dan instalasi "Development Tools"
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# yum update
# yum groupinstall 'Development Tools'

Install Quota dan edit file /etc/fstab
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# yum install quota
# vi /etc/fstab

tambahkan kode berikut:
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,usrjquota=aquota.user,grpjquota=aquota.group,jqfmt=vfsv0

sehingga menjadi;
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# /etc/fstab
# Created by anaconda on Thu Jan 26 11:39:33 2012
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/vg_server-lv_root /                       ext4    defaults,usrjquota=aquota.user,grpjquota=aquota.group,jqfmt=vfsv0        1 1
UUID=e6def23a-8da7-4b83-9ecc-8a0ab2ca3e9d /boot                   ext4    defaults        1 2
/dev/mapper/vg_server-lv_swap swap                    swap    defaults        0 0
tmpfs                   /dev/shm                tmpfs   defaults        0 0
devpts                  /dev/pts                devpts  gid=5,mode=620  0 0
sysfs                   /sys                    sysfs   defaults        0 0
proc                    /proc                   proc    defaults        0 0

Jalankan dan aktifkan quota berikut:
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# mount -o remount /
# quotacheck -avugm
# quotaon -avug

Install Apache, MySQL dan phpMyadmin
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# yum install ntp httpd mod_ssl mysql-server php php-mysql php-mbstring phpmyadmin

Install Courier-IMAP, Courier-Authlib dan Maildrop
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# yum remove dovecot dovecot-mysql
# yum install rpm-build gcc mysql-devel openssl-devel cyrus-sasl-devel pkgconfig zlib-devel pcre-devel openldap-devel postgresql-devel expect libtool-ltdl-devel openldap-servers libtool gdbm-devel pam-devel gamin-devel libidn-devel
# useradd -m -s /bin/bash indoit
# passwd indoit
masukkan password user indoit

Tambahkan hak akses untuk user indoit
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# visudo

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[...]
## Allow root to run any commands anywhere
root   ALL=(ALL) ALL
indoit ALL=(ALL) ALL
[...]

Pindah user untuk melakukan instalasi
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# su indoit

Persiapkan direktori kerja untuk tahap instalasi Courier-IMAP, Courier-Authlib dan Maildrop
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# mkdir $HOME/rpm
# mkdir $HOME/rpm/SOURCES
# mkdir $HOME/rpm/SPECS
# mkdir $HOME/rpm/BUILD
# mkdir $HOME/rpm/BUILDROOT
# mkdir $HOME/rpm/SRPMS
# mkdir $HOME/rpm/RPMS
# mkdir $HOME/rpm/RPMS/i386
# mkdir $HOME/rpm/RPMS/x86_64
# echo "%_topdir $HOME/rpm" >> $HOME/.rpmmacros
# mkdir $HOME/downloads
# cd $HOME/downloads

Download Courier-IMAP, Courier-Authlib dan Maildrop

Build dan install Courier-Authlib
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# sudo rpmbuild -ta courier-authlib-0.63.0.tar.bz2
# sudo ls -l /root/rpmbuild/RPMS/i686
# sudo rpm -ivh /root/rpmbuild/RPMS/i686/courier-authlib-0.63.0-1.el6.i686.rpm
# sudo rpm -ivh /root/rpmbuild/RPMS/i686/courier-authlib-mysql-0.63.0-1.el6.i686.rpm
# sudo rpm -ivh /root/rpmbuild/RPMS/i686/courier-authlib-devel-0.63.0-1.el6.i686.rpm

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# cd $HOME/downloads
# sudo mkdir -p /var/cache/ccache/tmp
# sudo chmod o+rwx /var/cache/ccache/
# sudo chmod 777 /var/cache/ccache/tmp

Build dan install Courier-IMAP
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# rpmbuild -ta courier-imap-4.9.3.tar.bz2
# cd $HOME/rpm/RPMS/i686
# ls -l
# sudo rpm -ivh courier-imap-4.9.3-1.i686.rpm

Build dan install Maildrop
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# cd $HOME/downloads
# sudo rpmbuild -ta maildrop-2.5.5.tar.bz2
# sudo ls -l /root/rpmbuild/RPMS/i686
# sudo rpm -ivh /root/rpmbuild/RPMS/i686/maildrop-2.5.5-1.i686.rpm

Keluar user dan jalankan service courier-imap
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# exit
# /etc/init.d/courier-imap start

Install Postfix
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# yum install postfix
# chkconfig --levels 235 mysqld on
# /etc/init.d/mysqld start
 
# chkconfig --levels 235 sendmail off
# chkconfig --levels 235 postfix on
# /etc/init.d/sendmail stop
# /etc/init.d/postfix restart


Install Getmail dan set password MySQL
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# yum install getmail
# mysql_secure_installation

Tambahkan alias phpMyAdmin
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# vi /etc/httpd/conf.d/phpmyadmin.conf
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Alias /phpmyadmin /usr/share/phpmyadmin
Alias /phpMyAdmin /usr/share/phpmyadmin
Alias /mysqladmin /usr/share/phpmyadmin

Output
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# Web application to manage MySQL
#
# Order Deny,Allow
# Deny from all
# Allow from 127.0.0.1
#
 
Alias /phpmyadmin /usr/share/phpmyadmin
Alias /phpMyAdmin /usr/share/phpmyadmin
Alias /mysqladmin /usr/share/phpmyadmin

Silahkan cek halaman phpmyadmin anda di http://ip-server/phpmyadmin

Edit /usr/share/phpmyadmin/config.inc.php ubah "cookie" menjadi "http"
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# vi /usr/share/phpmyadmin/config.inc.php

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[...]
/* Authentication type */
$cfg['Servers'][$i]['auth_type'] = 'http';
[...]

Jalankan service httpd
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# chkconfig --levels 235 httpd on
# /etc/init.d/httpd start

Install Apache2 With mod_php, mod_fcgi/PHP5, And suPHP
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# yum install php php-devel php-gd php-imap php-ldap php-mysql php-odbc php-pear php-xml php-xmlrpc php-xcache php-mbstring php-mcrypt php-mssql php-snmp php-soap php-tidy curl curl-devel perl-libwww-perl ImageMagick libxml2 libxml2-devel mod_fcgid php-cli httpd-devel

Edit dan aktifkan cgi.fix_pathinfo=1 pada file /etc/php.ini
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# vi /etc/php.ini

Kode
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[...]
;error_reporting = E_ALL & ~E_DEPRECATED
error_reporting = E_ALL & ~E_NOTICE
[...]
; cgi.fix_pathinfo provides *real* PATH_INFO/PATH_TRANSLATED support for CGI. PHP's
; previous behaviour was to set PATH_TRANSLATED to SCRIPT_FILENAME, and to not grok
; what PATH_INFO is. For more information on PATH_INFO, see the cgi specs. Setting
; this to 1 will cause PHP CGI to fix its paths to conform to the spec. A setting
; of zero causes PHP to behave as before. Default is 1. You should fix your scripts
; to use SCRIPT_FILENAME rather than PATH_TRANSLATED.
; http://www.php.net/manual/en/ini.core.php#ini.cgi.fix-pathinfo
cgi.fix_pathinfo=1
[...]


Install Suphp
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# cd /tmp
# wget http://suphp.org/download/suphp-0.7.1.tar.gz
# tar xvfz suphp-0.7.1.tar.gz
# cd suphp-0.7.1/
# ./configure --prefix=/usr --sysconfdir=/etc --with-apr=/usr/bin/apr-1-config --with-apxs=/usr/sbin/apxs --with-apache-user=apache --with-setid-mode=owner --with-php=/usr/bin/php-cgi --with-logfile=/var/log/httpd/suphp_log --enable-SUPHP_USE_USERGROUP=yes
# make
# make install
# vi /etc/httpd/conf.d/suphp.conf

Tambahkan kode berikut:
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LoadModule suphp_module modules/mod_suphp.so

Buat file /etc/suphp.conf
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# vi /etc/suphp.conf

tambahkan kode berikut:
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[global]
;Path to logfile
logfile=/var/log/httpd/suphp.log
;Loglevel
loglevel=info
;User Apache is running as
webserver_user=apache
;Path all scripts have to be in
docroot=/
;Path to chroot() to before executing script
;chroot=/mychroot
; Security options
allow_file_group_writeable=true
allow_file_others_writeable=false
allow_directory_group_writeable=true
allow_directory_others_writeable=false
;Check wheter script is within DOCUMENT_ROOT
check_vhost_docroot=true
;Send minor error messages to browser
errors_to_browser=false
;PATH environment variable
env_path=/bin:/usr/bin
;Umask to set, specify in octal notation
umask=0077
; Minimum UID
min_uid=100
; Minimum GID
min_gid=100
 
[handlers]
;Handler for php-scripts
x-httpd-suphp="php:/usr/bin/php-cgi"
;Handler for CGI-scripts
x-suphp-cgi="execute:!self"

Restart service httpd
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# /etc/init.d/httpd restart

Install Ruby
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# yum install httpd-devel ruby ruby-devel
# cd /tmp
# wget http://modruby.net/archive/mod_ruby-1.3.0.tar.gz
# tar zxvf mod_ruby-1.3.0.tar.gz
# cd mod_ruby-1.3.0/
# ./configure.rb --with-apr-includes=/usr/include/apr-1
# make
# make install

Edit file /etc/httpd/conf.d/ruby.conf
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# vi /etc/httpd/conf.d/ruby.conf

tambahkan kode berikut pada /etc/httpd/conf.d/ruby.conf
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LoadModule ruby_module modules/mod_ruby.so
RubyAddPath /1.8

Install Python
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# yum install mod_python
# /etc/init.d/httpd restart

Edit dan aktifkan beberapa LoadModule berikut:
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# vi /etc/httpd/conf/httpd.conf

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[...]
LoadModule auth_digest_module modules/mod_auth_digest.so
[...]
LoadModule dav_module modules/mod_dav.so
[...]
LoadModule dav_fs_module modules/mod_dav_fs.so
[...]

Restart service http
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# /etc/init.d/httpd restart


Install PureFTPd
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# yum install pure-ftpd
# chkconfig --levels 235 pure-ftpd on
# /etc/init.d/pure-ftpd start
# yum install openssl

Edit dan aktifkan TLS /etc/pure-ftpd/pure-ftpd.conf
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# vi /etc/pure-ftpd/pure-ftpd.conf

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[...]
# This option can accept three values :
# 0 : disable SSL/TLS encryption layer (default).
# 1 : accept both traditional and encrypted sessions.
# 2 : refuse connections that don't use SSL/TLS security mechanisms,
# including anonymous sessions.
# Do _not_ uncomment this blindly. Be sure that :
# 1) Your server has been compiled with SSL/TLS support (--with-tls),
# 2) A valid certificate is in place,
# 3) Only compatible clients will log in.
 
TLS 1
[...]

Membuat sertifikat SSL untuk PureFTPd
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# mkdir -p /etc/ssl/private/
# openssl req -x509 -nodes -days 7300 -newkey rsa:2048 -keyout /etc/ssl/private/pure-ftpd.pem -out /etc/ssl/private/pure-ftpd.pem
# chmod 600 /etc/ssl/private/pure-ftpd.pem
# /etc/init.d/pure-ftpd restart


Install Bind DNS Server
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# yum install bind bind-utils
# vi /etc/sysconfig/named

EDIT ROOTDIR=/var/named/chroot line is comment out:
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# BIND named process options
# ~~~~~~~~~~~~~~~~~~~~~~~~~~
# Currently, you can use the following options:
#
# ROOTDIR="/var/named/chroot" -- will run named in a chroot environment.
# you must set up the chroot environment
# (install the bind-chroot package) before
# doing this.
# NOTE:
# Those directories are automatically mounted to chroot if they are
# empty in the ROOTDIR directory. It will simplify maintenance of your
# chroot environment.
# - /var/named
# - /etc/pki/dnssec-keys
# - /etc/named
# - /usr/lib64/bind or /usr/lib/bind (architecture dependent)
#
# Those files are mounted as well if target file doesn't exist in
# chroot.
# - /etc/named.conf
# - /etc/rndc.conf
# - /etc/rndc.key
# - /etc/named.rfc1912.zones
# - /etc/named.dnssec.keys
# - /etc/named.iscdlv.key
#
# Don't forget to add "$AddUnixListenSocket /var/named/chroot/dev/log"
# line to your /etc/rsyslog.conf file. Otherwise your logging becomes
# broken when rsyslogd daemon is restarted (due update, for example).
#
# OPTIONS="whatever" -- These additional options will be passed to named
# at startup. Don't add -t here, use ROOTDIR instead.
#
# KEYTAB_FILE="/dir/file" -- Specify named service keytab file (for GSS-TSIG)
#
# DISABLE_ZONE_CHECKING -- By default, initscript calls named-checkzone
# utility for every zone to ensure all zones are
# valid before named starts. If you set this option
# to 'yes' then initscript doesn't perform those
# checks.

Backup dan edit /etc/named.conf
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# cp /etc/named.conf /etc/named.conf_bak
# cat /dev/null > /etc/named.conf
# vi /etc/named.conf

Masukkan kode /etc/named.conf berikut
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//
// named.conf
//
// Provided by Red Hat bind package to configure the ISC BIND named(8) DNS
// server as a caching only nameserver (as a localhost DNS resolver only).
//
// See /usr/share/doc/bind*/sample/ for example named configuration files.
//
options {
listen-on port 53 { any; };
listen-on-v6 port 53 { any; };
directory "/var/named";
dump-file "/var/named/data/cache_dump.db";
statistics-file "/var/named/data/named_stats.txt";
memstatistics-file "/var/named/data/named_mem_stats.txt";
allow-query { any; };
recursion yes;
};
logging {
channel default_debug {
file "data/named.run";
severity dynamic;
};
};
zone "." IN {
type hint;
file "named.ca";
};
include "/etc/named.conf.local";

Jalankan service bind
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# touch /etc/named.conf.local
# chkconfig --levels 235 named on
# /etc/init.d/named start

Install vlogger, webalizer, and awstats
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# yum install webalizer awstats perl-DateTime-Format-HTTP perl-DateTime-Format-Builder
# cd /tmp
# wget http://n0rp.chemlab.org/vlogger/vlogger-1.3.tar.gz
# tar xvfz vlogger-1.3.tar.gz
# mv vlogger-1.3/vlogger /usr/sbin/
# rm -rf vlogger*
# /etc/init.d/httpd restart


Install Jailkit
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# cd /tmp
# wget http://olivier.sessink.nl/jailkit/jailkit-2.14.tar.gz
# tar xvfz jailkit-2.14.tar.gz
# cd jailkit-2.14
# ./configure
# make
# make install
# cd ..
# rm -rf jailkit-2.14*
# /etc/init.d/httpd restart

Install fail2ban
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# yum install fail2ban
# vi /etc/fail2ban/fail2ban.conf

Edit logtarget = SYSLOG line and add logtarget = /var/log/fail2ban.log:
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[...]
# Option: logtarget
# Notes.: Set the log target. This could be a file, SYSLOG, STDERR or STDOUT.
# Only one log target can be specified.
# Values: STDOUT STDERR SYSLOG file Default: /var/log/fail2ban.log
#
#logtarget = SYSLOG
logtarget = /var/log/fail2ban.log
[...]

Jalankan service fail2ban
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# chkconfig --levels 235 fail2ban on
# /etc/init.d/fail2ban start
# /etc/init.d/httpd restart


Install Rkhunter
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# yum install rkhunter
# /etc/init.d/httpd restart

Install Mailman
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# yum install mailman
# /usr/lib/mailman/bin/newlist mailman

Edit dan tambahkan kode /etc/aliases
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# vi /etc/aliases

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mailman: "|/usr/lib/mailman/mail/mailman post mailman"
mailman-admin: "|/usr/lib/mailman/mail/mailman admin mailman"
mailman-bounces: "|/usr/lib/mailman/mail/mailman bounces mailman"
mailman-confirm: "|/usr/lib/mailman/mail/mailman confirm mailman"
mailman-join: "|/usr/lib/mailman/mail/mailman join mailman"
mailman-leave: "|/usr/lib/mailman/mail/mailman leave mailman"
mailman-owner: "|/usr/lib/mailman/mail/mailman owner mailman"
mailman-request: "|/usr/lib/mailman/mail/mailman request mailman"
mailman-subscribe: "|/usr/lib/mailman/mail/mailman subscribe mailman"
mailman-unsubscribe: "|/usr/lib/mailman/mail/mailman unsubscribe mailman"

Jalankan perintah newaliases
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# newaliases
# /etc/init.d/postfix restart
# /etc/init.d/httpd restart

Edit dan tabmahkan kode /etc/httpd/conf.d/mailman.conf
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# vi /etc/httpd/conf.d/mailman.conf

Tambahkan kode berikut pada /etc/httpd/conf.d/mailman.conf
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#
# httpd configuration settings for use with mailman.
#
 
ScriptAlias /mailman/ /usr/lib/mailman/cgi-bin/
ScriptAlias /cgi-bin/mailman/ /usr/lib/mailman/cgi-bin/
 
AllowOverride None
Options ExecCGI
Order allow,deny
Allow from all
 
 
#Alias /pipermail/ /var/lib/mailman/archives/public/
Alias /pipermail /var/lib/mailman/archives/public/
 
Options Indexes MultiViews FollowSymLinks
AllowOverride None
Order allow,deny
Allow from all
AddDefaultCharset Off
 
# Uncomment the following line, to redirect queries to /mailman to the
# listinfo page (recommended).
 
# RedirectMatch ^/mailman[/]*$ /mailman/listinfo

Restart service httpd dan jalankan service mailman
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# /etc/init.d/httpd restart
# chkconfig --levels 235 mailman on
# /etc/init.d/mailman start

Install SquirrelMail
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# yum install squirrelmail
# /etc/init.d/httpd restart
# /usr/share/squirrelmail/config/conf.pl

Pilih option ( D, courier, ENTER, S, Q)

Edit file /etc/squirrelmail/config_local.php
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# vi /etc/squirrelmail/config_local.php

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<!--?php
 
/**
 * Local config overrides.
 *
 * You can override the config.php settings here.
 * Don't do it unless you know what you're doing.
 * Use standard PHP syntax, see config.php for examples.
 *
 * @copyright © 2002-2006 The SquirrelMail Project Team
 * @license http://opensource.org/licenses/gpl-license.php GNU Public License
 * @version $Id: config_local.php,v 1.2 2006/07/11 03:33:47 wtogami Exp $
 * @package squirrelmail
 * @subpackage config
 */
 
//$default_folder_prefix                = '';
?-->


UPDATE:
Jika mengalami kendala dengan web mail server, gunakan konfigurasi berikut untuk postfix

Download dan install system-switch-mail, dimana tool ini akan memudahkan anda dalam switch mail system
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# wget http://centos.idrepo.or.id/centos/5.8/os/i386/CentOS/system-switch-mail-0.5.25-13.el5.noarch.rpm
# rpm -ivh system-switch-mail-0.5.25-13.el5.noarch.rpm

Terlebih dahulu bakup file konfigurasi /etc/postfix/main.cf
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# cp /etc/postfix/main.cf /etc/postfix/main.cf-original

Kosongkan file /etc/postfix/main.cf
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# echo "" > /etc/postfix/main.cf

Tambahkan kode di file /etc/postfix/main.cf
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# vi /etc/postfix/main.cf

Isi /etc/postfix/main.cf dengan kode berikut:
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queue_directory = /var/spool/postfix
command_directory = /usr/sbin
daemon_directory = /usr/libexec/postfix
mail_owner = postfix
inet_interfaces = all
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
unknown_local_recipient_reject_code = 550
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
debugger_command =
         PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin
         xxgdb $daemon_directory/$process_name $process_id & sleep 5
 
sendmail_path = /usr/sbin/sendmail.postfix
newaliases_path = /usr/bin/newaliases.postfix
mailq_path = /usr/bin/mailq.postfix
setgid_group = postdrop
html_directory = no
manpage_directory = /usr/share/man
sample_directory = /usr/share/doc/postfix-2.3.3/samples
readme_directory = /usr/share/doc/postfix-2.3.3/README_FILES
home_mailbox = Maildir/
append_dot_mydomain = no
readme_directory = no
mydomain = indoit.web.id
myorigin = $mydomain
 
smtp_client_restrictions =
        reject_rbl_client sbl.spamhaus.org,
        reject_rbl_client pbl.spamhaus.org,
        reject_rbl_client bl.spamcop.net,
        reject_rbl_client dnsbl.njabl.org,
        reject_rbl_client dnsbl.njabl.org,
        reject_rbl_client zen.spamhaus.org,
        reject_rbl_client bl.spamcop.net,
        permit_mynetworks,
        reject_unauth_destination,
        reject_unauth_pipelining,
        reject_unknown_sender_domain,
        reject_non_fqdn_recipient,
        reject_unknown_recipient_domain,
        reject_non_fqdn_sender,
        permit
mynetworks = /etc/postfix/mynetworks
smtpd_recipient_restrictions =
       permit_mynetworks,
       reject_unauth_destination,
       check_policy_service unix:private/policy,
       permit

Atau dapat mendownload file /etc/postfix/main.cf konfigurasi berikut:
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# wget http://indoit.googlecode.com/files/main.cf-postfix-indoit-centos.zip
# unzip main.cf-postfix-indoit-centos.zip
# cp main.cf-postfix-indoit-centos main.cf

Jalankan service postfix
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# touch /etc/postfix/mynetworks
# echo "192.168.10.0/24" > /etc/postfix/mynetworks
# echo "127.0.0.0/8" >> /etc/postfix/mynetworks
# /etc/init.d/postfix start

Test koneksi postfix
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# telnet localhost 25

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[root@server]# telnet localhost 25
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
220 server.indoit.web.id ESMTP Postfix
ehlo localhost  <=== "ehlo localhost" harus di ketik
250-server.indoit.web.id
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN

Install Dovecot
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# yum install dovecot

Matikan service Courier-IMAP dan jalankan Dovecot
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# /etc/init.d/courier-imap stop
# chkconfig --levels 235 courier-imap off
 
# chkconfig --levels 235 dovecot on
# /etc/init.d/dovecot start


ketikkan "quit" untuk keluar Selanjut nya kita akan mengkonfigurasi Untuk Dovecot
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# cp /etc/dovecot/dovecot.conf /etc/dovecot/dovecot.conf-original
Edit file /etc/dovecot/dovecot.conf
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# vi /etc/dovecot/dovecot.conf
Tambahkan kode berikut
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# Protocols we want to be serving.
# protocols = imap pop3 lmtp
 
  protocols = imap imaps pop3 pop3s
Edit file /etc/dovecot/conf.d/10-mail.conf
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# vi /etc/dovecot/conf.d/10-mail.conf
Hilangkan tanda pagar pada
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mail_location = maildir:~/Maildir
Edit file /etc/dovecot/conf.d/20-pop3.conf
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# vi /etc/dovecot/conf.d/20-pop3.conf
Hilangkan tanda pagar pada
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pop3_uidl_format = %08Xu%08Xv
Jalankan service dovecot
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# /etc/init.d/dovecot start
Install Amavisd-new, Spamassassin dan ClamAV
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# yum install amavisd-new spamassassin clamav clamd unzip bzip2 unrar perl-DBD-mysql
# sa-update
# chkconfig --levels 235 amavisd on
# chkconfig --del clamd
# chkconfig --levels 235 clamd.amavisd on
# /usr/bin/freshclam
# /etc/init.d/amavisd start
# /etc/init.d/clamd.amavisd start

Test kirim email dengan perintah berikut

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echo "Email body message"|mail -s "Header Mail" indoit@indoit.web.id


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