Install Portsentry di Centos 5.02

portsentry adalah suatu aplikasi yang digunakan untuk memblok ip atau port yang ingin menyerang server atau bisa di sebut juga gerbang yang berisikan penjaga dan penjaga itu bertugas mengecek setiap gerbang atau port.
oke langsung saja ke instalasinya.

1. download portsentry untuk centos bisa di download di bawah ini

trex@kingdomofheaven# wget ftp://194.199.20.114/linux/freshrpms/fedora /linux/1/portsentry/portsentry-1.1-11.fr.i386.rpm

2. install program portsentry

trex@kingdomofheaven# rpm -Uvh portsentry-1.1-11.fr.i386.rpm

3. lalu edit portsentry.conf

trex@kingdomofheaven portsentry# cd /etc/portsentry/
trex@kingdomofheaven portsentry# pico portsentry.conf
edit pada bagian
# iptables support for Linux
#KILL_ROUTE="/sbin/iptables -I INPUT -s $TARGET$ -j DROP"
menjadi
# iptables support for Linux
KILL_ROUTE="/sbin/iptables -I INPUT -s $TARGET$ -j DROP"

4. edit portsentry.modes

trex@kingdomofheaven portsentry# pico portsentry.conf
adit pada bagian
#tcp
#udp
#stcp
#sudp
atcp
audp
ubah menjadi(hialangkan # (disable) untuk mengenablekannya, saya hanya mengaktifkan port atcp dan audp seperti setingan standart)
#tcp
#udp
#stcp
#sudp
atcp
audp

5. dan edit portsentry.ignore

trex@kingdomofheaven portsentry# pico portsentry.ignore
pada bagian ini daftarkan ip yang tidak di inginkan untuk di scan

6. dan terakhir start portsentry anda

trex@kingdomofheaven portsentry#/etc/init.d/portsentry start
bila berhasil akan ada tampilan seperti di bawah
Starting portsentry: (atcp) [ OK ]
Starting portsentry: (audp) [ OK ]

7. untuk melihat serangan pada server anda coba cek pada portsentry.history

Grup Error in Your Linux Mint

grub whether you have experienced an error when intalations operating system? you may have never find this problem... but this article contains about the fix grub eror on your linux computer. Here are the steps that I try on my computer ...

prepare the first live cd linux (I use linux mint)
first booting to your cd rom

after the entry into linux and then press CTRL + ALT + F1

on the screen and then typing
Trex@kingdomofheaven @: ~ $ sudo grub

ago that there will be similar to the view
grub>

Type in the command prompt as below.
grub> find / boot/grub/stage1

it will look like under there
(hd0, 1) = depending on your linux partision =

Then type the command:

grub> root (hd0, 1)

after that there will be any posts
"Filesystem type is ext2fs, partition type 0 × 83"
= command gives where your linux partition =

Then type the command below
grub> setup (hd0, 1)
= command to install the group =

after the exit from the command prompt to quit

reboot the computer ago

and the last group you have been back as

congratulations