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Selasa, 26 Januari 2016

MEMBANGUN GATEWAY, DNS, DAN PROXY SERVER DENGAN MIKROTIK RB750









1.  Cara Setting Mikrotik RB 750 dengan Winbox

*) Jalankan winbox


 

klik pada tombol connect to, pilih MAC Address, masukkan login : admin, password “biarkan kosong, kemudian Connect



*) muncul halaman berikut:


Klik Remove Configuration







*) Ubah nama interface (untuk membedakan penggunaan port LAN)

klik menu interface, maka tampil halaman berikut:




Double klik pada ether1, Tampil halaman berikut:


Ubah Name : ether1 publik, kemudian Apply, OK




 
Klik add / tanda (+) , maka tampil halaman berikut: (lakukan sebanyak 3 x, untuk koneksi ke internet, lan, dan access point)




a.   Pada Address : 192.168.0. (absen+2)/24, interface : ether1 publik (port untuk koneksi ke internet), klik Apply, OK
b.   Pada Address : 192.168.137.(absen+2)/26 (/26 artinya dibatasi untuk 62 unit client), interface :

ether2 lan (port untuk koneksi ke client melalui kabel), klik Apply, OK

c.   Pada Address ether3 hostpot: 10.10.10.(absen+2)/26 (/26 artinya dibatasi untuk 62 unit client), interface : ether3 hotspot (port untuk koneksi ke access point dan untuk memberikan konkesi ke client melalui wirelless), klik Apply, OK




Isi DNS misal : Servers : 202.162.220.110 dan Alternate : 202.162.220.220, Ceklist pada Allow Remote Request, Apply, OK


*) Setting NAT, Klik IP Æ Firewall Æ klik tab NAT


Klik Add / tanda (+), hingga muncul tampilan berikut:

















a.   Pada tab General, Chain : srcnat, Out-Interface: ether1 modem (untuk membuka koneksi ke modem)
b.   Pada tab Action, Action : masquerade, Apply, OK





Klik Add / tanda (+), akan tampil halaman di atas:



Isi pada Gateway : 192.168.0.1 (ket: IP  Address internet, untuk memberikan akses ke internet), Apply, OK


Tampilan pada Route List “AS, 192.168.0.1 reachable ether modem” artinya kabel sudah terpasang dan koneksi telah tersambung













Ketik pada ping to : 202.162.220.110, klik Start seperti pada gambar diatas


2. Buat DHCP Server

DHCP Server di setting pada Port ether 2 lan (untuk memberikan IP Address Dinamis pada Client dengan Kabel) dan ether 3 access point (untuk memberikan IP Address Dinamis pada Client dengan koneksi wirelless)



Klik DHCP Setup, tampil halaman berikut:


Isi pada DHCP Server Interface : etherr2 lan, Next



DHCP Address Space, Next                           Gateway for DHCP Network, Next



Addresses to Give Out, Next                          DNS Servers, Next




 

Lease Time, Next                                            Setup has completed succesfully, OK



Sampai tahap ini Setup DHCP untuk ether 2 lan telah berhasil dilakukan, selanjutnya lakukan hal yang sama untuk ether 3 access point.


3.  Cara Membuat dan Mengaktifkan Proxy Server

*) SettingProxy server, klik IP  Web Proxy, tampil halaman berikut :


Pada Tab General, Ceklist kotak Enable, Port : 3128, Cache administrator : emai@sekolah.com, Max. Cache Size : unlimited, ceklist pada kotak Cache On Disk, Apply, lihat pada status jika sudah running, klik OK


*) Blok Website, dari halaman Web Proxy, klik tombol Access, tampil halaman berikut:


Klik Add / tambah (+), tampil halaman berikut:




a.   Blok Website google : Isi pada Src. Address : 0.0.0.0/0, Dst. Host:

www.google.com, Action : deny, Apply, OK

b.   Blok Website youtube : Lakukan hal yang sama seperti langkah diatas



*) Aktivkan Transparent Proxy



Buatkan Transparen Proxy untuk Port 80, 8080, dan 8000

Klik IPÆ Firewall Æ NAT, tampil halaman berikut :


 

a.   Buat transparent Proxy untuk port 80. Pada tab General, ubah Chain : dstnat, Protocol: tcp, Dst. Port: 80, pada tab Action, ubah Action : redirect, To Ports : 3128, Apply, OK
b.   Lakukan hal yang sama untuk transparent Proxy port 8080. Pada tab General, ubah Chain : dstnat, Protocol: tcp, Dst. Port: 8080, pada tab Action, ubah Action : redirect, To Ports : 3128, Apply, OK
c.   Lakukan hal yang sama untuk transparent Proxy port 8000. Pada tab General, ubah Chain : dstnat, Protocol: tcp, Dst. Port: 8000, pada tab Action, ubah Action : redirect, To Ports : 3128, Apply, OK


Hasil akhir terlihat pada tampilan berikut:




Sampai dengan langkah berikut konfigurasi komrotik RB 750 untuk membangun Gateway, DNS, Proxy Server telah selesai. Langkah berikutnya tinggal konfigurasi Access Point.


4.   Cara Setting Access Point

Langkah berikutnya yaitu mengkonfigurasi Access Point, merk yang digunakan TPLink, model : TLWA701ND. Secara default IP Addressnya : 192.168.0.245, maka komputer kita harus dikonfigurasi dengan IP Address yang satu range, misal : 192.168.0.20 user : admin, password : admin. Berikut langkah-langkah nya:
*) Login dengan Browser, Buka bowser, ketikkan IP Address : 192.168.0.254, enter


Masukkan user dan password nya, OK, tampil halaman awal berikut:




Quick Setup, Next




Pilih Opsi Access Point, Next




Isi pada Wirelless Network Name (SSID) : nama-siswa (contoh), Wirelless Security Mode: Most Secure (WPA/WPA2-PSK), Wirelless Password: 12345678 (contoh, sebanyak minimal 8 karakter/numerik), Next




Option DHCP: Disable (karena DHCP sudah diatur oleh mikrotik), Sesuai dengan Soal, Port yang dihubungkan dengan Access Point yaitu ether3 access point dengan IP Address
: 192.168.10.1, maka ubah IP Address : 192.168.10.100 (contoh), Subnet Mask :

255.255.255.0, Next




Klik Reboot, OK




Proses reboot.



Sampai disini konfigurasi Access Point telah selesai.



5.  Cara menguji koneksi wirelless

Scan Wirelless, muncul beberapa nama wirelless, cari nama SSID yang tadi di setting


 

Misal SSID nya : nama-siswa, connect               Masukkan Password, misal : 12345678, OK


6.  Cara menguji koneksi dari client

Untuk menguji koneksi Client baik yang menggunakan kabel maupun dengan wirelless, pengaturan IP Address sudah DHCP maka lakukan perubahan IP Address dengan memilih Obtain baik pada LAN Card maupun wirelless. Berikutnya ikuti langkah- langkah berikut :
*) Buka Command Prompt, dengan ketik “cmd” tanpa tandan kutip pada Run


Ketik : ipconfig (kecil semua) untuk melihat perolehan IP Address.




Ujicoba dengan website yang tidak di block





Ujicoba ke youtube setelah di block

Senin, 07 Juli 2014

EXCEL PASSWORD RECOVERY 2007, 2010, 2013

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If you are evaluating various password recovery tools, keep in mind that purchasing Excel Password you pay for getting the job done, not just for trying! Note that a typical DEMO version of password recovery software is able to crack short passwords only. On short passwords it works almost instantly. But this speed is an illusion. Try our Password Calculator to estimate recovery time that a typical password requires!
Microsoft Excel supports several protection types: password to open, password to modify, workbook protection password, worksheet protection password; to learn more about different types of Excel Passwords and recovery methods, see this chart.

You can find an overview of various password recovery methods here.
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Express Recovery is a new exciting technology that can be used to recover Word and Excel passwords to open instantly. Express Recovery is a further development of Guaranteed Recovery that we developed in 1999. Guaranteed Recovery takes a few days to recover a password regardless of its length. Express Recovery does the same just within a minute.
Express Recovery is integrated into Excel Password and is available as a service at PasswordNow.com or as a standalone product Express Recovery (Inhouse Edition) .

Express Recovery Features

- If you use Express Recovery, you NEEDN'T recover the password. Using this feature, you can REMOVE the password at all! However if you want to know the original password, we can find it for an additional fee in 48 hours.


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- Express Recovery is subject to availability. Normally you should expect it available during regular business hours. If Express Recovery is not available at the moment, your document will be queued and recovered within 36 hours.


- Password recovery is performed at our datacenter, so an Internet connection is required. However your document will NOT be sent over the Internet! See the privacy statement below.


-If you have several password-protected files (even with exactly the same password), you have to process each file individually (because each password-protected Word/Excel document has a unique random signature that affects recovery process). Click here to learn more about multiple document recovery.


- Express Recovery is applicable to passwords to open only, other password types are recovered instantly even without Express Recovery.


- You pay for password recovery on a per document basis. Ten recovery vouchers are included. If you want to recover more documents, buy additional vouchers.


Money back guarantee! If we fail to recover your document due to any reason within 36 hours, we will refund your order.
The process of recovery cannot be cancelled and the service fee is not refundable (unless we fail to recover your document).

Demo Version available!

A free Demo version of Excel Password is available!

Privacy issues

The software has to pass a fragment of your Word or Excel document to our server to enable us to recover the document. We consider privacy issues very seriously and do our best to protect your privacy. Only a small part (about 50 bytes) of your Word or Excel document will be sent to the server. This part does NOT contain actual document contents or any other private information. All transferred information is encrypted using a strong encryption algorithm.
If for some reason you cannot (or do not want to) transmit your data over the Internet (for example, due to corporate security policy), you can use our special edition of Express Recovery - Express Recovery (Inhouse Edition), which allows to complete the recovery process on your computer.

Note on Office XP, 2003

You can use Express Recovery to recover Office XP or 2003 documents only if they were saved in the default (Office 97/2000 compatible) encryption mode. If the document has been saved in the advanced encryption mode, Express Recovery will not work.

Note on Office 2007 / 2010 / 2013

You can find more information about password recovery for Office 2007/2010/2013 here.
Excel Password is able to recover password-protected Excel documents (supports all versions of Excel, from Excel 4.0 through Excel XP, 2003). Password-protected documents created in the earlier versions of Excel (up to Excel 95 (v7.0)) have weaker protection; therefore they can be recovered even quicker. To learn more about Excel password types and password recovery methods, please read this article.
We released a password recovery tool for Pocket Excel (Excel for PDA). You can learn more about this tool here.
Important note. This is not a cracking or hacking site. We do not offer software "cracks", cracking programs or other hacking tools. Instead, we offer password recovery software and password recovery services. Password recovery software is also known as "password crackers" (or "password breakers"). Note that "password crackers" are not "software crackers". Software crackers are produced by hackers and are used to run illegal software copies. Password crackers are used to "crack" lost or forgotten passwords. Have you ever forgotten your password? We could help you... 

Sometimes people ask us why Demo versions of our software are so limited. Here is the answer. Password recovery tools are very special software. Unlike regular software, a typical password recovery tool may be needed only to restore that much needed document, and nothing more. You use it only once, as opposed to system-checking, workspace-improving or security software. Suppose we release a regular time-limited fully-functional trial version. In this case we will inevitably lose a lot of our customers ("one-time users"). Developing good password recovery software takes a lot of efforts from our professionals, so we simply wouldn't be able to stay in business if we gave our software away for free. We have to offer you software with limited capabilities so you can have a chance to evaluate them, and we have a chance to get paid for the full version and keep bringing you better products in the future. Your understanding is much appreciated; if you choose our products, you won't be disappointed by their performance and support!
If you have any suggestions or ideas on improving our software, please let us know. We do appreciate your opinion!

Download Excel Password Demo

Download Full Demo All recovery modules in a single package (recommended).

 
 
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