Konfigurasi Web Server
1. Mengindeks CD Debian sebelum menginstall software Apache, PhP dan MySQL
Apt-cdrom add [enter]
Muncul perintah untuk memasukkan file ISO
Pilih file ISO lalu OK [enter]
2. Menginstall software
Apt-get install apache2 php5 mysql-server php5-mysql libapache2-mod-php5
3. Setelah menginstall, mari kita menuju homedebian
Cd /
Sehingga menjadi debian:/ (tanda ~ hilang)
4. Buat direktori
Mkdir tugas
5. Masuk direktori tugas dan buat direktori di dalamnya
Cd /tugas
Mkdir web
6. Membuat halaman default
Nano index.php
Anda bisa mengisinya dengan script php, misalnya:
Simpan file tersebut di /tugas/web
7. Chmod 755 /tugas/web
8. Cd /etc/apache2/sites-available
9. Nano default
Edit bagian /var/www menjadi /tugas/web
Tambahkan ‘#’ sebelum RedirectMatch
10. Restart apache
/etc/init.d/apache2 restart
Buka browser anda dan ketikkan domain Anda misal “agis.com”
Maka script yang anda tuliskan akan tereksekusi
Which information can IP filtering technologies use to make packet-forwarding decisions?(Select three.)
source IP address
destination IP address
port address
Which option in the Microsoft NOS periodically checks for software patches and upgrades via the Internet?
Windows Update
Which list contains only specific types of DoS attacks
Ping of Death, TCP SYN, Teardrop, and Smurf
Which Red Hat Linux utility allows an administrator to either select DHCP IP configuration, or to specify a static IP address along with the associated netmask, gateway, and primary nameserver?
netconfig
In Linux, what is the first program that takes control of the boot process from the BIOS?
LILO
On a Linux server, which file is usually the best place to locate error messages that have been generated but not displayed on screen?
system log
Which statement is true about the use of passwords in the Linux operating system?
Passwords are case sensitive.
What is the term given to a group of independent computers working together as a single system?
cluster
While booting a Linux server, the booting process stopped and the 'LIL-' error code was displayed. What does this indicate?
The disk descriptor table (/boot/map) is corrupt.
In a Linux system, the set of recent kernel messages is known as the kernel ring buffer. Which command displays these messages?
dmesg
Which command in Linux is useful to help resolve printing problems?
lpq
What is the maximum amount of down time a mission-critical application can have during the course of the year if the application has a 99.999% availability requirement?
5 minutes
The graphic displays output from the dmesg command. Where are the messages coming from?
the kernel
Which TCP/IP utility prints information about network connections, routing tables, and interfaces?
netstat
Which Redundant Array of Inexpensive Disks (RAID) level is also known as disk mirroring?
RAID 1
What is the name of the signal that a network administrator sends to remotely power up a computer that has a NIC with WOL technology capabilities?
magic packet
What is the simplest and most recommended method of creating a custom emergency boot disk for Linux?
Modify one of the existing boot disks.
hot site
Read More..The Internet poses many security issues. What is characteristic of Internet security for corporate networks?
Internet protocols have an inherent lack of security and Internet rules have loopholes that can be exploited.
What can be used to repair security 'holes' in software?
a security patch
Which layer of the OSI reference model is involved when an access list denies traffic to a specific port?
Layer 4
/sbin/ipfw/add allow tcp from any to 10.90.0.3 80 What does the 80 signify in the ipfw configuration statement
well-known port for web servers
What is one security advantage that magnetic access cards have over physical keys?
They allow the authorization to be revoked from a central server
Which of the following are characteristics of a good password policy? (Select two.)
It should expire passwords after a specified time
It should require passwords that are a mixture of letters and numbers
Which term describes an insecure host that has a permanent Internet connection and is used in a DDoS attack?
a zombie
What is the purpose of a firewall?
preventing unwanted or malicious IP packets from reaching a network
What can be done with a packet when using packet filtering?
It can be forwarded, dropped, or processed.
What should an administrator do before installing a major software upgrade on a production server?
test the results on a test server
When does it make sense to use a NOS as a firewall solution
if there is a low-traffic environment
What is the first step in creating a security policy for a company network?
Define an Acceptable Use policy
Which layers of the OSI model are examined in the most comprehensive form of stateful packet filtering?
3, 4, and 7
Which agency discovers and studies Internet-related security vulnerabilities?
CERT/CC
What is one method of implementing a firewall?
ACLs
What is the only 100 percent effective measure to protect the network from outside attacks?
Disconnect from the outside network.
Which type of DoS attack uses three-way handshaking to leave multiple 'half-open' connections?
TCP SYN
Which of the following are examples of biometric security devices? (Select two.)
fingerprint reader
retinal scanner
NAT is a process used to protect local networks from hackers. Which list of items applies to NAT?
It rewrites the addressing information in IP packets.
It protects private IP addresses from the Internet.
Outside hackers cannot directly reach private IP addresses.
When do software manufacturers release security updates?
when vulnerabilities are discovered and fixed
.:posted by.Agista Rully Saraswati:.
Saya akan berbagi cara subnetting network .
Sebenarnya guna Subnet ini sendiri adalah membagi segmen jaringan ke dalam jaringan yang Lebih kecil lagi.
contoh subnetting :
sebuah perusahaan memiliki 60 komputer .
tentukan subnet mask , jumlah network , network address dan broadcast address IP perusahaan tersebut .
a. subnet mask :
(angka yang mendekati 60 adalah 64 -karena kita menggunakan perpangkatan 2-)
jadi 26 = 64 - 2 = 62 host .yang dimaksud 6 dalam perpangkatan tersebut adalah bit yang mati . karena 60 merupakan jumlah host yang diketahui. jadi subnetnya : 255.255.255.192 / 11111111.11111111.11111111.11000000
prefixnya : -gunakan saja IP 192.168.45.3- 192.168.45.3/26
subnet yang kita gunakan merupakan subnet kelas C
b. jumlah network adalah perpangkatan dari bit subnet mask yang hidup
jadi 22 = 4 . ada 4 network dalam jaringan tersebut .
c.
Menentukan Network address dengan cara 256-192 = 64 jadi oktet terakhir NA adalah kelipatan 64 dan dimulai dari angka 0 . (192 adalah oktet terakhir dari subnet mask)
Menentukan broadcast address dengan cara melihat alamat NA pada 1 baris dibawahnya.
misalkan baris pertama NA : 192.168.45.0 dan baris kedua NA 192.168.45.64 maka broadcast addressnya ditulis 1 angka sebelum NA baris kedua pada oktet terakhirnya . broadcast address : 192.168.45.63
| Network address | IP valid | broadcast address | |
| 192.168.45.0 | 192.168.45.1 | 192.168.45.62 | 192.168.45.63 |
| 192.168.45.64 | 192.168.45.65 | 192.168.45.126 | 192.168.45.127 |
| 192.168.45.128 | 192.168.45.129 | 192.168.45.190 | 192.168.45.191 |
| 192.168.45.192 | 192.168.45.193 | 192.168.45.254 | 192.168.45.255 |
Oleh Karena itu Mari kita bahas Jaringan dari Dasarnya saja.
LAN singkatan dari Local Area Network yang berarti Jaringan yang wilayahnya merupakan wilayah lokal yang segmen jaringannya berkisar antara 10-100 m seperti gedung perkantoran , kampus dan sekolah.
LAN terdiri dari dua jenis koneksi -atau apa ya nyebutnya? terserah pembaca saja- yaitu : Peer to Peer [tidak ada komputer yang berperan menjadi server] dan Client to Server [salah satu komputer bertindak sebagai server]
dan LAN juga memiliki beberapa TOPOLOGI seperti : BUS/Daisy CHain , RING , star, mesh dan hierarchial.
LAN membutuhkan beberapa media untuk menghubungkan antar komputer agar dapat saLing berkomunikasi . Antara Lain : Kabel UTP + Konektor RJ 45 , Hub/Switch, Wireless [untuk Jaringan ad-hoc juga bisa].
agar komputer saling berkomunikasi satu sama lain, setelah kita pasang hardware yang bersangkutan. kita bisa mengatur konfigurasi secara software pada komputer itu sendiri. hal yang biasa dilakukan adalah menyetting IP (Internet Protokol) dan mengecek konektivitas antar komputer dengan perintah PING(Packet Internet Groper).
setelah kedua komputer terkoneksi barulah pengguna dapat melakukan sharing data dan printer.
kegunaan LAN ini sendiri adalah memudahkan cara berbagi data sesama pengguna . jadi lebih hemat waktu. ya bukan ?
Baca Juga Wikipedia dan googling sebanyak-banyaknya . mari kita bertukar ilmu .
.:posted by. Agista Rully Saraswati:.
