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Routing OSPF, NAT, DNAT, WEBPROXY dan LOAD BALANCING

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Routing OSPF, NAT, DNAT, WEBPROXY dan LOAD BALANCING

Postoleh admin pada 23 Nov 2009, 03:24

Gambar

login as: vyatta
vyatta@167.205.145.50's password:
Linux vyatta 2.6.26-1-486-vyatta #1 SMP Fri Feb 27 01:04:20 GMT 2009 i686
Welcome to Vyatta.
This system is open-source software. The exact distribution terms for
each module comprising the full system are described in the individual
files in /usr/share/doc/*/copyright.
Last login: Fri Nov 20 01:06:43 2009

Masuk ke configuration mode
vyatta@vyatta:~$ configure
[edit]

Set IP address untuk tiap-tiap interfaces
vyatta@vyatta# set interfaces ethernet eth0 address 192.168.0.2/24
[edit]
vyatta@vyatta# set interfaces ethernet eth1 address 192.168.1.2/24
[edit]
vyatta@vyatta# set interfaces ethernet eth2 address 167.205.145.50/29
[edit]
vyatta@vyatta# set interfaces ethernet eth2 address 167.205.145.51/29
[edit]
vyatta@vyatta# set interfaces ethernet eth2 address 167.205.145.52/29
[edit]
vyatta@vyatta# set interfaces ethernet eth3 address 192.168.49.1/24
[edit]

Set Routing Protocol OSPF, disini kita akan mengatur alamat network yang menggunakan OSPF yaitu alamat network 167.205.145.48/29 dan alamat network 118.98.240.189/32 dan ingat jangan pernah meng-advertise alamat IP Private ke Network Inherent.
vyatta@vyatta# set protocols ospf log-adjacency-changes
[edit]
vyatta@vyatta# set protocols ospf parameters router-id 118.98.240.189
[edit]
vyatta@vyatta# set protocols ospf parameters router-id 118.98.240.189
[edit]
vyatta@vyatta# set protocols ospf area 69 network 167.205.145.48/29
[edit]
vyatta@vyatta# set protocols ospf area 69 network 118.98.240.189/32
[edit]

Aktifkan webgui untuk vyatta sehingga kita bisa melakukan administrasi mesin vyatta tidak hanya melalui console teapi juga melalui web. Anda bisa membuka https://alamat-ip-dari-mesin-vyatta misal https://167.205.145.50

vyatta@vyatta# set service https
[edit]
vyatta@vyatta# commit
Generating a 1024 bit RSA private key
....++++++
...........++++++
writing new private key to '/etc/lighttpd/server.pem'
-----
Stopping web server: lighttpd.
Starting web server: lighttpd.
Stopping PAGER server
saveStarting PAGER server
[edit]
vyatta@vyatta# save
Saving configuration to '/opt/vyatta/etc/config/config.boot'...
Done
[edit]

Set NAT menuju ke inherent
vyatta@vyatta# set service nat rule 10 description NAT-to-Inherent
[edit]
vyatta@vyatta# set service nat rule 10 outbound-interface eth2
[edit]
vyatta@vyatta# set service nat rule 10 type masquerade
[edit]
vyatta@vyatta# commit
[edit]
vyatta@vyatta# save
Saving configuration to '/opt/vyatta/etc/config/config.boot'...
Done
[edit]

Sampai sini kita sudah bisa mengakses Inherent tetapi berada dalam kondisi NAT

Sekarang bagaimana jika kita ingin agar server kita juga bisa diakses dari inherent dengan mempergunakan IP address yang dialokasikan oleh pengelola inherent sesuai dengan IP address untuk local node kita, padahal server kita ke mempunyai IP Private, disini kita akan memperlakukan satu teknik lagi, yang dikenal dengan IP Forwarding jika kita ingin meneruskan seluruh traffic dari inherent ke server kita, dan Port Forwarding jika kita ingin meneruskan traffic ke port tertentu saja misal vyatta hanya akan meneruskan ke mesin local jika ada request menuju ke port 80 (http). Disini kita akan memperlakukan teknik Port Forwarding. Contoh disini kita menginginkan agar alamat IP server local 192.168.49.2 bisa diakses dari inherent dengan IP address 167.205.145.51 dengan protocol http (Port 80).

vyatta@vyatta# set service nat rule 20 description DNAT-to-Webserver1-from-inherent
[edit]
vyatta@vyatta# set service nat rule 20 type destination
[edit]
vyatta@vyatta# set service nat rule 20 destination address 167.205.145.51
[edit]
vyatta@vyatta# set service nat rule 20 inbound-interface eth2
[edit]
vyatta@vyatta# set service nat rule 20 protocol tcp
[edit]
vyatta@vyatta# set service nat rule 20 destination port 80
[edit]
vyatta@vyatta# set service nat rule 20 inside-address address 192.168.49.2
[edit]
vyatta@vyatta# set service nat rule 20 inside-address port 80
[edit]
vyatta@vyatta# commit
[edit]
vyatta@vyatta# save
Saving configuration to '/opt/vyatta/etc/config/config.boot'...
Done
[edit]

Nah sekarang bagaimana jika kita mempunyai alat Vicon untuk melakukan telekonferensi, Komunikasi voice dan video ini mempergunakan protocol UDP sebagai protocol transport-nya, nah disini kita akan melakukan IP Forwarding, artinya meneruskan seluruh traffic tanpa perlu memperhatikan traffic tersebut mempergunakan protocol transport apa dan nomor port berapa sebagai destination port-nya.

vyatta@vyatta# set service nat rule 30 description DNAT-to-Vicon-from-inherent
[edit]
vyatta@vyatta# set service nat rule 30 type destination
[edit]
vyatta@vyatta# set service nat rule 30 destination address 167.205.145.52
[edit]
vyatta@vyatta# set service nat rule 30 inbound-interface eth2
[edit]
vyatta@vyatta# set service nat rule 30 inside-address address 192.168.49.3
[edit]
vyatta@vyatta#

Nah pada saat anda memberikan IP pada vicon berikanlah IP Private 192.168.49.3, dan sampai disini berarti baik webserver dan vicon kita sudah bisa berkomunikasi 2 arah dalam artian bisa mengakses dan bisa diakses dari jaringan inherent

Selanjutnya bagaimana kita bisa memanfaatkan IP public pada modem ADSL kita untuk bisa diberikan ke webserver kita, sebenarnya teknik yang dipergunakan sama seperti sebelumnya yaitu teknik Port Forwarding. Pada permodelan network ini kita anggap IP Address 192.168.0.2 dan IP Address 192.168.1.2 adalah IP Public

vyatta@vyatta# set service nat rule 40 description DNAT-from-ISP1-to-webserver1
[edit]
vyatta@vyatta# set service nat rule 40 type destination
[edit]
vyatta@vyatta# set service nat rule 40 destination address 192.168.0.2
[edit]
vyatta@vyatta# set service nat rule 40 protocol tcp
[edit]
vyatta@vyatta# set service nat rule 40 destination port 80
[edit]
vyatta@vyatta# set service nat rule 40 inbound-interface eth0
[edit]
vyatta@vyatta# set service nat rule 40 inside-address address 192.168.49.2
[edit]
vyatta@vyatta# set service nat rule 40 inside-address port 80
[edit]

Nah sekarang server tersebut juga sudah bisa di akses dari internet dengan mempergunakan IP Public, lakukan pendaftaran ke http://pandi.or.id agar server tersebut bisa diakses dengan mempergunakan nama domain

Sekarang kita akan memanfaatkan IP Public satu yaitu lagi 192.168.1.2 untuk diberikan ke server kita yang lain, bisa jadi server ini akan kita jadikan mail server ataupun server yang lain sesuai dengan kebutuhan kita. Dan ingat jika anda ingin menjadikan server ini sebagai mail server, mau tidak mau yang harus anda lakukan adalah melakukan pendaftaran domain ke http://pandi.or.id karena mail server harus mempunyai MX record sehingga MTA dari mail server lain bisa mengirim email ke server kita (komunikasi antar mail server). Tetapi untuk contoh disini kita masih mempergunakan port 80 karena kita ingin agar server kita ini juga berfungsi penyedia layanan web dan bisa dimanfaatkan untuk layanan e-learning dan lain-lain.

vyatta@vyatta# set service nat rule 50 description DNAT-from-ISP2-to-webserver2
[edit]
vyatta@vyatta# set service nat rule 50 type destination
[edit]
vyatta@vyatta# set service nat rule 50 destination address 192.168.1.2
[edit]
vyatta@vyatta# set service nat rule 50 protocol tcp
[edit]
vyatta@vyatta# set service nat rule 50 destination port 80
[edit]
vyatta@vyatta# set service nat rule 50 inbound-interface eth0
[edit]
vyatta@vyatta# set service nat rule 50 inside-address address 192.168.49.4
[edit]
vyatta@vyatta# set service nat rule 50 inside-address port 80
[edit]
vyatta@vyatta# commit
[edit]
vyatta@vyatta# save
Saving configuration to '/opt/vyatta/etc/config/config.boot'...
Done
[edit]

Kemudian lakukan NAT menuju ke internet melalui ISP1 supaya user pada LAN bisa mengakses layanan internet
vyatta@vyatta# set service nat rule 60 description NAT-to-Internet-via-ISP1
[edit]
vyatta@vyatta# set service nat rule 60 destination address 0.0.0.0/0
[edit]
vyatta@vyatta# set service nat rule 60 outbound-interface eth0
[edit]
vyatta@vyatta# set service nat rule 60 type masquerade
[edit]
vyatta@vyatta# commit
[edit]
vyatta@vyatta# save
Saving configuration to '/opt/vyatta/etc/config/config.boot'...
Done
[edit]

Sama seperti diatas lakukan NAT sekali lagi menuju ke internet melalui ISP2
vyatta@vyatta# set service nat rule 70 description NAT-to-Internet-via-ISP2
[edit]
vyatta@vyatta# set service nat rule 70 destination address 0.0.0.0/0
[edit]
vyatta@vyatta# set service nat rule 70 outbound-interface eth1
[edit]
vyatta@vyatta# set service nat rule 70 type masquerade
[edit]
vyatta@vyatta# commit
[edit]
vyatta@vyatta# save
Saving configuration to '/opt/vyatta/etc/config/config.boot'...
Done
[edit]

Set default gateway baik yang melalui ISP1 dan ISP2
vyatta@vyatta# set protocols static route 0.0.0.0/0 next-hop 192.168.0.1
[edit]
vyatta@vyatta# set protocols static route 0.0.0.0/0 next-hop 192.168.1.1
[edit]

Sekarang kita akan mencoba melihat routing table yang terbentuk
vyatta@vyatta#exit
[edit]
vyatta@vyatta:~$ show ip route
Codes: K - kernel route, C - connected, S - static, R - RIP, O - OSPF,
I - ISIS, B - BGP, > - selected route, * - FIB route

S>* 0.0.0.0/0 [1/0] via 192.168.0.1, eth0
* via 192.168.1.1, eth1
O 118.98.240.189/32 [110/10] is directly connected, lo, 00:59:56
C>* 118.98.240.189/32 is directly connected, lo
C>* 127.0.0.0/8 is directly connected, lo
O 167.205.145.48/29 [110/10] is directly connected, eth2, 01:15:48
C>* 167.205.145.48/29 is directly connected, eth2
C>* 192.168.0.0/24 is directly connected, eth0
C>* 192.168.1.0/24 is directly connected, eth1
O>* 192.168.5.0/24 [110/20] via 167.205.145.49, eth2, 01:15:47
C>* 192.168.49.0/24 is directly connected, eth3
vyatta@vyatta:~$
[edit]

Note:
Perlu dicatat disini, karena ini merupakan simulasi dengan VMware maka maka routing table yang terbentuk terbatas pada network-network yang ada pada simulasi ini. Routing Table akan terbentuk lebih banyak lagi jika kita sudah menghubungkan router ini ke real system.


Set load balancing baik melalui eth0 maupun eth1
vyatta@vyatta# set load-balancing wan interface-health eth0 failure-count 5
[edit]
vyatta@vyatta# set load-balancing wan interface-health eth0 nexthop 192.168.0.1
[edit]
vyatta@vyatta# set load-balancing wan interface-health eth0 ping 192.168.0.1
[edit]
vyatta@vyatta# set load-balancing wan interface-health eth1 failure-count 4
[edit]
vyatta@vyatta# set load-balancing wan interface-health eth1 nexthop 192.168.1.1
[edit]
vyatta@vyatta# set load-balancing wan interface-health eth1 ping 192.168.1.1
[edit]

Set rule (pengaturan) dari load balancing agar traffic yang berasal eth3 (LAN) bisa diarahkan keluar melalui eth0 dan eth1, berikan rule 10
vyatta@vyatta# set load-balancing wan rule 10 inbound-interface eth3
[edit]
vyatta@vyatta# set load-balancing wan rule 10 interface eth0 weight 2
[edit]
vyatta@vyatta# set load-balancing wan rule 10 interface eth1 weight 1
[edit]
vyatta@vyatta# commit
[edit]
vyatta@vyatta# save
Saving configuration to '/opt/vyatta/etc/config/config.boot'...
Done
[edit]
vyatta@vyatta#

Set lagi rule (pengaturan) dari load balancing seperti diatas, kali ini berikan rule 20
vyatta@vyatta# set load-balancing wan rule 20 inbound-interface eth3
[edit]
vyatta@vyatta# set load-balancing wan rule 20 interface eth0 weight 2
[edit]
vyatta@vyatta# set load-balancing wan rule 20 interface eth1 weight 1
[edit]
vyatta@vyatta# commit
[edit]
vyatta@vyatta# save
Saving configuration to '/opt/vyatta/etc/config/config.boot'...
Done
[edit]


Jika anda menjadikan server pada alamat IP 192.168.49.2 sebagai DNS local maka pada mesin vyatta arahkan name server menuju IP tersebut
vyatta@vyatta# set system name-server 192.168.49.2
[edit]

Untuk menghemat penggunaan bandwidth maka Vyatta juga bisa dijadikan webproxy yang bisa menyimpan web cache, dan karena seluruh traffic dari LAN akan menuju alamat IP 192.168.49.1 maka alamat IP ini berfungsi sebagai default gateway untuk LAN tersebut, atur listen-address untuk menggunakan IP tersebut.
vyatta@vyatta# set service webproxy listen-address 192.168.49.1
[edit]
vyatta@vyatta# commit
Restarting Squid HTTP Proxy 3.0: squid3.
[edit]
vyatta@vyatta# save
Saving configuration to '/opt/vyatta/etc/config/config.boot'...
Done
[edit]

Lakukan updating terhadap webproxy
vyatta@vyatta# exit
exit
vyatta@vyatta:~$ update webproxy blacklists
Warning: No url-filtering blacklist installed
Would you like to download a default blacklist? [confirm][y]
--2009-11-22 20:51:06-- ftp://ftp.univ-tlse1.fr/pub/reseau/cach ... sts.tar.gz
=> `/tmp/blacklists.gz'
----------------------------------------cut-----------------------------------------------

Masuk lagi ke configure mode buat pengaturan untuk web proxy ini
vyatta@vyatta:~$ configure
[edit]

Alokasikan besarnya cache webproxy pada hardisk, nilai yang kita buat dalam ukuran MB, contoh angka 100000 berarti 100000 MB. Lakukan sesuai dengan ketersediaan space yang tersedia pada hardisk anda.
vyatta@vyatta # set service webproxy cache-size 100000
[edit]

Set auto update seminggu sekali supaya tidak terlalu membebani bandwidth
vyatta@vyatta # set service webproxy url-filtering squidguard auto-update weekly
[edit]

Set alamat url yang tidak kita izinkan untuk diakses, misal link game pada facebook, karena konsumsi bandwidth yang cukup besar
vyatta@vyatta # set service webproxy url-filtering squidguard local-block apps.facebook.com
[edit]

Set kategori yang bersifat pornografi dan perjudian maupun kategori yang dilarang lainnya, tetapi anda harus hati-hati dan cukup bijak terhadap content ini, karena beberapa fakultas seperti fakultas kedokteran memerlukan keyword sex untuk menunjang pembelajaran mereka dalam mencari literatur, jurnal dan lain sebagainya

vyatta@vyatta# set service webproxy url-filtering squidguard block-category sex
[edit]

Redirect-url berguna untuk membelokkan traffic jika ada user mengakses content yang termasuk dalam kategori yang dilarang tadi, misal dibelokkan menuju ke official site kita: http://www.unsri.ac.id
vyatta@vyatta # set service webproxy url-filtering squidguard redirect-url http://www.unsri.ac.id
[edit]
vyatta@vyatta # commit
[edit]
vyatta@vyatta # save
Saving configuration to '/opt/vyatta/etc/config/config.boot'...
Done
[edit]
vyatta@vyatta #

Demikianlah desain dari network ini kami (Tim ICT Unsri) buat sebagai bentuk kepedulian kami terhadap kemajuan bersama berdasarkan asas Tri Dharma Perguruan Tinggi. Bagaimana kita membuat suatu system yang handal berdasarkan kondisi existing dari network tersebut dan tetap memperhatikan aspek low cost, low requirement and still meet with user requirement but powerful dengan memanfaatkan Vyatta Open Source (Thanks to Vyatta http://vyatta.org) dan low end PC (PC Butut). Terhadap Universitas lain yang berada di bawah sub local node Palembang-UNSRI, kami sangat terbuka untuk saling membantu dalam perancangan network, berdikusi, dan saling berbagi. Let share and discuss guys…..remember IT not cost centre…
admin
Site Admin
 
Post: 12
Bergabung: 28 Sep 2009, 22:51

SAlaM Kenal

Postoleh penyair_keji pada 23 Nov 2009, 05:31

Hmmm ....
Suatu tawaran menarik tuk mengenal dan menguasai operating system berbasis open source dari salah satu master IT kita nih ...
Untuk dasar-dasar Vyata dan perintah-perintah nya kalo bisa di postingkan juga, biar yang ingin belajar, bisa belajar, biar ga penuh forum nya dengan pertanyaan-pertanyaan dasar:D
Jadi pengen juga nih ngoprek nya ...
sukses selalu aja perkembangan IT kita
penyair_keji
 
Post: 1
Bergabung: 23 Nov 2009, 05:18

Re: Routing OSPF, NAT, DNAT, WEBPROXY dan LOAD BALANCING

Postoleh admin pada 23 Nov 2009, 05:34

Terima kasih Mas Penyair_keji, kita akan posting perintah2 dasar dari Vyatta, selamat bergabung Mas, katanya dari Bekasi ya, salam IT
admin
Site Admin
 
Post: 12
Bergabung: 28 Sep 2009, 22:51

Re: Routing OSPF, NAT, DNAT, WEBPROXY dan LOAD BALANCING

Postoleh mumus pada 23 Nov 2009, 07:31

thask info nya pak kalo bisa kasi tutorial buat bagi bandwidth
mumus
 
Post: 1
Bergabung: 23 Nov 2009, 07:29

Re: Routing OSPF, NAT, DNAT, WEBPROXY dan LOAD BALANCING

Postoleh jailangkung_pemalu pada 23 Nov 2009, 22:22

izin bergabung pak...tertarik ingin belajar juga nieh....
jailangkung_pemalu
 
Post: 1
Bergabung: 23 Nov 2009, 20:45

Re: Routing OSPF, NAT, DNAT, WEBPROXY dan LOAD BALANCING

Postoleh bujok.bute pada 26 Nov 2009, 02:43

izin baca pak admin...
bujok.bute
 
Post: 2
Bergabung: 25 Nov 2009, 00:32

Re: Routing OSPF, NAT, DNAT, WEBPROXY dan LOAD BALANCING

Postoleh Chendl Astro pada 01 Jan 2010, 18:48

:roll: Makasih Pak Tutorial'ya.

mohon ijin saya jadikan panduan untuk setting koneksi INHERENT kampus kami. kami berada di bawah lokal node UI.

terima kasih sebelum dan sesudah'ya.
Chendl Astro
 
Post: 1
Bergabung: 01 Jan 2010, 17:30

Re: Routing OSPF, NAT, DNAT, WEBPROXY dan LOAD BALANCING

Postoleh admin pada 05 Jan 2010, 22:40

Terima kasih juga, Alhamdulillah kalau material di tutorial ini bisa membantu
admin
Site Admin
 
Post: 12
Bergabung: 28 Sep 2009, 22:51

Why is my computer getting popups and turning off regularly?

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Bergabung: 19 Jan 2010, 20:44

Any suggestions for social networking sites that are free, t

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I have a Dell Latitude Laptop using Windows XP. I took it to Geek Squad because it was skipping and the freezing up when I played DVDs or any kind of audio. When it freezes I have to turn it off witut shutting it down. It also wouldn't freeze right away..it freezes into about 10 minutes of playing DVDs or youtube videos. It was also making weird noises when it froze. Best Buy informed me that the noise wasn't any hardware issue, but the kind of noise the computer makes when it's frozen. They said nothing was wrong hardware wise, and that I had 6 viruses on the laptop. Well now, all those viruses are removed, and my laptop is still skipping and freezing when I play DVDs..to the point where I have to turn off the computer without shutting it down. If it's not viruses, and geek squad said everything is fine with the computer physically, then what is it? unlock iphone 3g
Jojoking
 
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Bergabung: 19 Jan 2010, 20:44

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Jojoking
 
Post: 4
Bergabung: 19 Jan 2010, 20:44

PLEASE HELP, I HAVE WORMS & VIRUS ON MY COMPUTER!!! PLEASE!!

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My laptop got repaired and restored to factory settings from having a virus and now the headphones port isn't working. I plug in the earphones but the sound still comes through the speakers. How do I fix it? Running Windows Vista unlock iphone
Luffie
 
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Bergabung: 29 Jan 2010, 01:59

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Bergabung: 14 Feb 2010, 00:17

Computer Problems need help PLEASE!?

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Qarlcom
 
Post: 3
Bergabung: 14 Feb 2010, 00:17

What is the best antivirus program to use that is affordable

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It comes up everytime saying i may have a virus, i loaded something along time ago malwares i think was the name, and it took off the pop up thing, but it wont let me do it now, any other free things like that that can help me get rid of this? unlock iphone 3g
Qarlcom
 
Post: 3
Bergabung: 14 Feb 2010, 00:17

Is my computer security sufficient?

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Jondar
 
Post: 2
Bergabung: 24 Feb 2010, 05:19

Avast 5 update problem.?

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Jondar
 
Post: 2
Bergabung: 24 Feb 2010, 05:19

An uninstalled program tried to access the internet?

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Post: 3
Bergabung: 26 Feb 2010, 05:37

Is there an antivirus software that will remove the Sheur2 t

Postoleh Sixtrock pada 27 Feb 2010, 02:35

I have windows movie maker 2.6 and windows live movie maker although windows movie maker 2.6 is preferable as i find it easier to use! I was wondering if anyone knows how to rip videos off youtube (virus free) =) and put them into windows movie maker 2.6 and edit them and stuff. any help would be gratefully recieved! =) lol xxx [url=HOW-TO-STOP-PROCRASTINATING.INFO]how to stop procrastinating[/url] [url=OVERCOMESHYNESSEASY.INFO]overcome shyness[/url] [url=THE-POWER-OF-YOUR-SUBCONSCIOUS-MIND.INFO]the power of your subconscious mind[/url] [url=DAILY-MOTIVATION.INFO]daily motivation[/url] [url=100PARENTINGTIPS.INFO]parenting tips[/url] [url=EASYSTRESSREDUCTION.INFO]stress reduction[/url] [url=IMPROVE-CONCENTRATION.INFO]improve concentration[/url]
Sixtrock
 
Post: 3
Bergabung: 26 Feb 2010, 05:37

How do u remove a VirTool:win32/VBInject.gen!BP Virus?

Postoleh Sixtrock pada 27 Feb 2010, 02:46

I restored my computer and now i am not able to use programs i did before saying that i no longer have the system requirements and i lost connection to the internet on the computer and i think its because of a virus because it worked before Im using a different computer and i was wondering what do i have to do in order to make my computer have the system stuff it did before System Microsoft Windows XP Home Edition Version 2002 Service Pack 1 Manufactured and supported by Hewlett-Packard Pavilion Intel(R) Pentium(R) 4 CPU 2.80GHz 2.80GHz 504 MB of RAM I can't even download Windows Live messenger [url=IMPROVE-CONCENTRATION.INFO]improve concentration[/url] [url=HOW-TO-STOP-PROCRASTINATING.INFO]how to stop procrastinating[/url] [url=100PARENTINGTIPS.INFO]parenting tips[/url] [url=EASYSTRESSREDUCTION.INFO]stress reduction[/url] [url=DAILY-MOTIVATION.INFO]daily motivation[/url] [url=OVERCOMESHYNESSEASY.INFO]overcome shyness[/url] [url=THE-POWER-OF-YOUR-SUBCONSCIOUS-MIND.INFO]the power of your subconscious mind[/url]
Sixtrock
 
Post: 3
Bergabung: 26 Feb 2010, 05:37

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