Wilsar Bali

What is it ?

EasyHotspot is an alternative solution for hotspot billing system. Its contain some particular open source software that bundled into a single package. We DO NOT try to make a replacement to similar existing open source projects. Our aim is delivering a system that simple, easy to install, use and modify.

License

EasyHotspot will be released under GPL, so that you can use it freedom.

What's the different ?

For most case EasyHotspot comes with ready to use configuration. You need less configuration to build an up and running hotspot. It will saves your time and energy.

EasyHotspot developed on the top of Xubuntu distribution, an Ubuntu variation that maintaned by Canonical. Its a good point since Xubuntu comes with regular updates, so you dont have to worries about software update.

The hotspot manager frontend that could manage your hotspot is built from Codeigniter framework. Codeigniter is an blazing fast PHP framework which easy to understand and its very handy to make a web bassed application. We hope everyone can easely understand and make an improvement to the code.

Who's gonna need it ?

Anyone who want to build an hotspot or someone who willing to learn how hotspot works. . For example : Cafe, Hotel, Public place, And ... i dont know u named it .. :D

How to get involved ?

Ok, this is my favorite part ... its easy to get involved and help this project. You can report the bugs, make an improvement/variation, request new features, criticts, filled up our wish list, spread the word. Everything positive are welcome :) ..

Features

This features is the basic feature, we need your idea to improve this features.

• User management (CRUD operation).
• Random voucher generated account (create/delete).
• Billing plan : variable time bassed account.
• Statistic : who's online, daily usage.
• Configuration : change admin password, allowed site, secret key.

Nutrition Facts

EasyHotspot is built from several great software, and here they are:

• Operating System, Xubuntu will take this place :)
• RADIUS, this app will help us to perform AAA process. And we gonna use FreeRADIUS for it.
• Captive Portal, it used for authenticating users. Chillispot is one of the best choice :)
• Database / MySQL, it used for storing the users and logs information.
• Management frontend, it used for helping the hotspot's administrator to administer their hotspot/system. EasyHotspot management frontend used PHP and CodeIgniter.

Screenshoot

Pada artikel ini kita akan belajar bersama yang melalui wireless connection, berarti sms akan dikirim dari kartu gsm yang kita posisikan sebagai modem gsm. Dan maaf yang ip sms connection penulis belon nyoba..... :D
Berikut skema sistem yang akan penulis bahas:

Berikut alat dan bahan yang harus kita sediakan (lihat skema di bagian your sistem):

1. 1 buah komputer; kita pakai OS Windows XP
   penulis menggunakan Win XP di laptop Byon Centrino Duo, RAM 2G.
2. 1 buah gsm modem atau handphone yang bisa difungsikan sebagai gsm modem
   penulis menggunakan Sony Ericsson K750i dengan nomor IM3
3. Kabel atau bluetooth untuk koneksi HP dengan komputer; penulis menggunakan kabel bawaan dari SE K750i
4. Driver atau PC suite handphone; penulis menggunakan PC suite yang sudah tersedia di paket penjualan SE K750i
5. 1 buah handphone untuk mengirim sms; penulis memakai Motorolla W150i dengan nomor Fren
6. 1 buah software sebagai gateway; kita pakai nowsms
7. apache, MySQL dan PHP; penulis memakai appserv 2.5.7

Langkah pertama yaitu menginstall appserv di komputer kita.

1. test di browser dengan mengetik http://localhost apakah sudah tampil?? Kalau sudah tampil berarti Webserver sudah bisa.
2. selanjutnya tes lagi ketik http://localhost/phpmyadmin. Kalau sudah jalan berarti PHP dan MySQLnya sudah berfungsi dengan baik

Langkah ke tiga yaitu menginstall NowSMS. File installer Now SMS/MMS gateway ini cuman 7,42MB dan bisa diunduh dengan mudah di http://www.nowsms.com. Software ini berbayar tetapi kita bisa mencoba gratis dan full fungsional selama 60 hari. (Mmmm jamunya banyak tuh di internet... kalo pengen make terus xixixixi......)

Setelah kita install kita akan disuguhi interface seperti ini:

Langkah ke empat tambahkan modem gsm / HP kita ke situ.

1. klik Add
2. Pilih GSM Phone or Modem kemudian klik OK
   
3. Pilih modem kita dan isikan pin, di sini pin default SE adalah 1234. Dikosongi juga bisa. Klik Test and add modem. Kalau berhasil muncul tulisan modem successfully tested!!
   
   

Langkah ke lima adalah menyeting SMSC connection:

1. Klik SMSC di menu atas
2. Pilih SMSC connection kamu, dalah kasus ini yang baru ditambahkan adalah Sony Ericsson 750 USB WMC Modem.
   Kalo ingin menambahkan devices lain ya tinggal ikuti langkah ke empat
3. Klik properties dan isikan nomer telepon di modem / HP SE K750i (dalam kasus ini yang nomer IM3)
4. check receive SMS Messages
   
   
5. Klik OK
   

Langkah ke enam adalah menjalankan SMS gateway service:

1. Klik Service di menu atas program now sms.
2. Kemudian check sms gateway run as a service.
3. Anda akan dimintai persetujuan dan nowsms akan restart dirinya secara otomatis untuk berjalan sebagai service.
   berikut gambar now sms yang sudah berfungsi sebagai service:
   
   

Langkah ke tujuh adalah mencoba mengirim sms melalu web interface now sms:

1. Secara default now sms berjalan di localhost atau dengan ip address 127.0.0.1 dengan port 8800
2. Kita buka browser dan ketikkan alamat berikut: http://localhost:8800
3. akan muncul interface seperti ini:
   
4. Isikan phone number dan Text kemudian klik submit
5. Maka sms Anda akan terkirim ke nomer penerima

Apakah sudah puas dengan ini aja??? kalo belum mari kita hubungkan now sms dengan PHP dan MySQL. (Tapi maaf penulis mo bikin teh rosella dulu. haus...)

Menghubungkan now sms/ mms gateway dengan PHP dan MySQL
Skenarionya nanti sms akan dikirim dengan HP W150i yang berfungsi sebagi pengirim sms. Kemudian diterima HP K750i (gsm modem) yang diteruskan ke kompie diterima sms gateway yakni now sms kemudian diteruskan ke script php. Script PHP kemudian meneruskan menyimpan ke database MySQL.

langkah pertama yaitu membuat database mysql dengan nama nowsms

1. ketik http://localhost/phpmyadmin di browser untuk membuka phpmyadmin
2. ketik nama database, di sini kita paka nama nowsms
   
   
   
   
3. kemudian masukkan kode sql ini untuk membuat tabel dengan nama inbox yang terdiri dari 2 column yaitu id dan isi
   
   view plain print

   1. 
      
   2. CREATE TABLE `inbox` (
   3. `id` int(5) NOT NULL auto_increment,
   4. `isi` text NOT NULL,
   5. PRIMARY KEY (`id`)
   6. ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=4 ;
   CREATE TABLE `inbox` ( `id` int(5) NOT NULL auto_increment, `isi` text NOT NULL, PRIMARY KEY (`id`) ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=4 ;
   
4. berikut struktur datanya.... (maaf sederhana bgt untuk mempermudah pemahaman... )
   

Langkah ke dua adalah membuat script PHP yang bertugas memasukkan sms ke database MySQL

1. buka windows explorer untuk membuat direktori baru dengan nama nowsms
2. kalo di komputer penulis urlnya adalah C:AppServwwwnowsms
   
3. kemudian buat file dengan nama index.php yang isinya sebagai berikut:
   
   view plain print

   1. 
      
   2. // setting databasenya
   3. $db_host = "localhost";
   4. $db_user = "root";
   5. $db_pass = "sipit";
   6. $db_name = "nowsms";
   7. 
      
   8. // menghubungkan dengan database
   9. $link = mysql_pconnect ($db_host, $db_user, $db_pass) or die ("Ga bisa connect");
   10. mysql_select_db ($db_name) or die ("Ga bisa select database");
   11. 
       
   12. // trim inputan. ini dihilangkan juga tidak masalah
   13. $isi = trim($isi);
   14. 
       
   15. //memasukkan ke table inbox
   16. $sql = "INSERT INTO inbox
   17. SET id='',
   18. isi='$isi'";
   19. $query = mysql_query($sql) ;
   20. ?>
   <?php // setting databasenya $db_host = "localhost"; $db_user = "root"; $db_pass = "sipit"; $db_name = "nowsms"; // menghubungkan dengan database $link = mysql_pconnect ($db_host, $db_user, $db_pass) or die ("Ga bisa connect"); mysql_select_db ($db_name) or die ("Ga bisa select database"); // trim inputan. ini dihilangkan juga tidak masalah $isi = trim($isi); //memasukkan ke table inbox $sql = "INSERT INTO inbox SET id='', isi='$isi'"; $query = mysql_query($sql) ; ?>
   
4. Selesai (jangan lupa extensinya adalah *.php jadi kalau lewat notepad pilih save as typenya sebagai all file, kemudian beri nama index.php)

langkah ke tiga adalah mengatur setting di now sms

1. Pilih 2-Way di menu atasnya
2. Check process received sms message
3. Isi SMS command prefix dengan tanda bintang atau * atau asterix (*_*;)
   maksudnya semua sms akan diproses. apabila ingin command prefix tertentu silahkan diisi misalnya AFI (sehingga nantinya akan memproses SMS yang berawalan dengan AFI saja)
4. isi Receive Phone Number(s) sesuai yang Anda isikan di SMSC connection tadi. (nomer IM3 yang di GSM Modem/ K750i)
5. Command execute isi dengan: http://localhost/nowsms/index.php?isi=@@FULLSMS@@
6. klik ADD
7. Klik APPLY
8. Jadi deh

Nanti apabila ada sms masuk ke HP / modem gprs kita maka otomatis akan terekam di database kita.

Saat ini fungsi sms tidak sekedar untuk berkirim pesan kepada kerabat saja, tapi sudah beralih ke fungsi yang lain misalnya quiz sms, polling sms, layanan Info On Demand, dan sebagainya.
Semua aplikasi tersebut membutuhkan suatu aplikasi yang disebut sms gateway.
Aplikasi SMS gateway bisa diterapkan pada Café, Toko, Rumah sakit, Sekolah, maupun instansi pemerintah.

Contoh aplikasi Info On Demand untuk Sekolah misalnya:
•Info nilai ujian siswa.
cara kerja : client mengirim no.induk siswa diikuti mata pelajaran ke nomor server lalu server akan mengirim nilai ujian secara otomatis
•Info jadwal ujian, pendaftaran siswa baru dsb.

Sebenarnya untuk membuat SMS gateway tidak terlalu sulit. Bahkan bagi yang awam coding sekalipun. Cukup sedikit pengetahuan tentang Visual Basic dan MsAccess, anda bisa membuat apikasi SMS Gateway sendiri.
Yang diperlukan untuk membuat aplikasi SMS Gateway:

Hardware
• Computer
• GSM Modem atau HP Nokia series sebagai sms gateway
• Kabel Data USB /serial

Software
•Visual Basic
•FBus Activex sebagai komponen Visual Basic
•MsAccess sebagai database

Dengan SMS Activex, kita sudah bisa menerima sms, membaca inbox, maupun mengirim sms melalui PC.

Lalu gimana caranya agar kita bisa membuat sms gateway yang bisa memberikan layanan Info On demand?
Berikut langkah-langkahnya
1. Koneksikan database MsAccess dengan Visual Basic
2. Isi database MsAccess dengan database Buku Telepon
3. Memodifikasi script dari smsactivex. Sehingga setiap ada pesan masuk, program akan membalas secara otomatis.

Jika Anda Membutuhkan Source Codenya plus Componentnya. Silahkan anda Download

Networks can sometimes be like closets; they start out completely organized, but then over time as items are added and stuff gets moved around, pretty soon you end up with a bit of a mess, with items that may or may not be working – or needed. This is why network management applications can be so useful — they help you inventory and track all the devices on your network while watching out for network problems that may occur.

The Dude is serviceable for a freeware network management tool but, it does have drawbacks. (Click for larger image).

This kind of software typically costs several hundred dollars or more, but Latvian networking hardware and software maker MikroTik's The Dude is considerably less expensive than that. In fact, it's free, and while the oddly-named utility ("Dude, Where's My Network?") doesn't have even close to the same level of polish as network monitoring tools you have to pay for, it can do a decent job, provided you're willing to spend time figuring out its idiosyncratic interface and experimenting with its features.

The Dude runs on Windows (Vista, XP, or 2000), MacOS X, or Linux using a client/server design, which means the server component runs in the background on a PC while you interact with the server using a separate client utility. Since The Dude supports both local and remote connections, you can run the client on the same system as the server or any other system on the network. The Secure connections are also possible when connecting remotely.

Network Mapping. Monitoring, and Notification
When you fire up The Dude network monitor for the first time, it automatically detects any existing subnets and begins scanning them. Detected devices are then probed to determine which of more than a dozen IP-based services they support (like NetBIOS, HTTP, FTP, etc.), but you can add your own probes for any services that aren't already pre-configured.

After The Dude completes its discovery process, the results are plotted as icons on a map grid. Mousing over a device's icon brings up a pop-up dialog which provides a lot of useful information at a glance, including which of its services are up, down, or unstable, as well as a graph that displays the device's network activity for the past hour.

The Dude's network maps are highly adjustable, and you easily can change their layouts and the orientation of devices. If you have a mouse with a wheel you can use it to zoom in or out of the map, and for crowded networks an adjacent birds-eye view lets you navigate large maps by quickly navigating to a particular section.

Right-clicking a device on the map brings up a tools menu that allows you to make contact with the device in a number of ways, ranging from ping to FTP or telnet connections. For devices that run RouterOS (MikroTik's proprietary network operating system), you can also do things like check bandwidth to a device or monitor its traffic in real-time.

When a monitored device goes offline, its network map icon turns red. The Dude can issue notifications when this occurs, but it doesn't do so by default (other than to post entries to an event log). Other supported notification methods include sending e-mails, playing sounds or presenting pop-up warnings (no pager or SMS support). The notification option must be individually enabled and configured on a per-device basis; it would have been nice to have an automatic default alert if any network device went incommunicado, but we couldn't find a way to configure that.

The Dude offers the ability to customize countless configuration options. (Click for larger image).

Interface and Customization
The Dude network monitor offers the ability to customize countless configuration options, but unfortunately its user interface is not particularly attractive or intuitive, and some people will find it downright confusing at times. Like many applications, The Dude uses a two-pane interface that lets you select a configuration item from a list on the left and view it on the right.

While this seems logical enough, the arrangement doesn't work very well in practice. For example, each time you select a configuration item it generates a new right-hand window that tiles vertically with those that are already open. This quickly leads to a very busy layout until you manually re-orient all of the windows so that they're all properly visible.

Making the task a bit easier is the fact that each configuration window has a series of buttons that will split it vertically or horizontally, allowing you to open additional windows in the free space created. Also on the plus side is the fact that The Dude's window layout is stored on the server rather than the client, so once you get everything set up the way you like it you can view it the same way from multiple clients.

The Dude offers ways to customize its behavior as well as appearance, including the ability to control how often network polling is preformed, how long to wait before timing out a device, and which services are polled on which devices. Interface issues rear their head here too, though. The configuration dialogs lack scroll bars, and as you select categories via an expandable hierarchy, the dialog box simply grows until it's the full height of your display, leaving certain configuration options unavailable off-screen unless you reclaim space by closing others.

If you'd prefer to administer The Dude via a browser, you can use its Web-based interface, but it doesn't duplicate all of the configuration options available in the Windows client. (The browser-based client does allow the use of SSL for secure remote connections.)

It's not unusual for free software to offer limited documentation, and The Dude is no exception. Documentation consists only of a fairly short online wiki (which can also be downloaded as a PDF file) that provides a very basic top-level look at the software and doesn't cover how to use many program features in any real depth. The Dude's docs are also somewhat out of date since they haven't been revised since version 1.0 of the software (we looked at v2.2 and beta releases of v3.0).

Although The Dude delivers many of the same capabilities that you'd find in pricey network monitoring tools, it could definitely use a better interface and more comprehensive and current documentation. Of course, it's really hard to argue with the price, and as long as ease-of-use isn't your main priority and you don't mind tinkering, The Dude is a decent network utility that should be worth the download.

Pros: Free, lots of customizable options, useful network mapping features
Cons: Rather unintuitive user interface, device alerts not turned on by default, minimal and out of date documentation

Adapted from winplanet.com.

Some of it’s features:

• The Dude is free of charge!
• Auto network discovery and layout
• Discovers any type or brand of device
• Device, Link monitoring, and notifications
• Includes SVG icons for devices, and supports custom icons and backgrounds
• Easy installation and usage
• Allows you to draw your own maps and add custom devices
• Supports SNMP, ICMP, DNS and TCP monitoring for devices that support it
• Individual Link usage monitoring and graphs
• Direct access to remote control tools for device management
• Supports remote Dude server and local client
• Runs in Linux Wine environment, MacOS Darwine, and Windows
• Best price/value ratio compared to other products (free of charge)

Banyak artikel yang berkisar membahas tentang hacking wireless router Linksys WRT54GS. Tetapi, saya hanya berbagi kepada anda, bagaimana tahap-tahap meng-hacking wireless router Linksys WRT54GS (Versi 7). Karena banyak keuntungan, bila anda memiliki keberanian untuk meng-upgrade-nya.

Keuntungannya:

• Dapat digunakan untuk menangkap paket data (wardriving method). Bila anda set router ke mode client, banyak software yang mendukung mode ini (misalnya Comview for LAN, wireshark).
• Jumlah klien hingga 128 (AP mode).
• Power hingga 250 mW.
• Fitur-fitur unik (Hotspot portal, Virtual LAN, wireless client, txpower yang dapat disesuaikan, adjust date rate, frekuensi CPU yang dapat disesuaikan, dan banyak lagi).

Gambar 1. Tampilan DD-WRT pada WRT54GS

Perhatian! Baca tulisan berikut ini, sebelum anda meng-upgrade Linksys WRT54GS, temukan versi (seri) router anda (lihat contoh).

Gambar 2. Alamat Fisik MAC addres WRT54GS

Tahap-tahapnya:

1. Download dd-wrt.v24_micro_wrt54gv8.bin (My CPU Broadcom BCM5354 chip rev 2 for WRT54GS V.7).
2. Download vxworkskillerGSv7-v3.bin. (atau kunjungi http://www.dd-wrt.com/dd-wrtv3/dd-wrt/downloads.html)
   
3. Download befsx41_tFtp.exe (untuk membangun kembali sistem anda).
4. Unplug router anda.
5. Tekan tombol reset ketika menyalakan router anda lagi.
6. Buka browser anda dan ketik 192.168.1.1 (default IP Router).
   
7. Klik tombol browse & cari tempat file vxworkskillerGSv7-v3.bin tersebut, lalu klik [upgrade].

Gambar 3. Manajemen Mode Upgrade Firmware pada Tab Administration

9. Buka file befsx41_tFtp.exe.

Gambar 4. Aplikasi TFTP tool

10. Masukkan 192.168.1.1 sebagai server address (biarkan password kosong) pada isian aplikasi TFTP tool.

11. Arahkan [Browse] anda ke file dd-wrt.v24_micro_generic.bin tersebut.

12. Klik [upgrade]. Mohon tunggu….

13. Setelah sukses di-upgrade, maka default login menjadi (username:root)(password:admin).

Yeah…Saya telah memiliki “smart router”.

Gambar 5. Layar Tampilan DD-WRT pada WRT54GS dengan berbagai mode Wireless

Install Server DHCP di Ubuntu

Peritah tersebut akan menginstall server DHCP di ubuntu, tidak repot kan.

Konfigurasi Server DHCP

Jika komputer ubuntu anda mempunyai 2 network card, anda pilih salah satu Network card yang digunakan untuk menerima permintaan Ip dari client, atau dalam satu LAN. kemudian anda buka file

cari

INTERFACES=”"

ganti dengan

INTERFACES=”eth0″

simpan dan keluar

Metode Address Pool

langkah selanjutnya buka file

ganti konfigurasi seperti dibawah

simpan kemudian keluar.

Konfigurasi diatas berarti Server DHCP menyiapkan IP address antara 192.168.0.100-192.168.0.200, Gateway 192.168.0.1, DNS 202.188.0.133 dan 202.188.0.5

Metode MAC Address

Metode ini memberikan IP statik ke client berdasarkan MAC Addres dari network card client.

Buka file dhcp.conf

Setelah selesai restart service DHCP.

sudah selesai deh instalasi server DHCPnya.

Konfigurasi Klient DHCP

buka file intervace

Edit dan sesuaikan dengan ini

Simpan kemudian keluar.

Kemudian restart networkingnya

Bagaimana mencari IP Addres DHCP Server

anda harus menjalankan beberapa perintah

or

Pengertian DHCP
DHCP (Dynamic Host Configuration Protocol) adalah layanan yang secara otomatis memberikan nomor IP kepada komputer yang memintanya. Komputer yang memberikan nomor IP disebut sebagai DHCP server, sedangkan komputer yang meminta nomor IP disebut sebagai DHCP Client. Dengan demikian administrator tidak perlu lagi harus memberikan nomor IP secara manual pada saat konfigurasi TCP/IP, tapi cukup dengan memberikan referensi kepada DHCP Server.

Pada saat DHCP client dihidupkan , maka komputer tersebut melakukan request ke DHCP-Server untuk mendapatkan nomor IP. DHCP menjawab dengan memberikan nomor IP yang ada di database DHCP. DHCP Server setelah memberikan nomor IP, maka server meminjamkan (lease) nomor IP yang ada ke DHCP-Client dan mencoret nomor IP tersebut dari daftar pool. Nomor IP diberikan bersama dengan subnet mask dan default gateway. Jika tidak ada lagi nomor IP yang dapat diberikan, maka client tidak dapat menginisialisasi TCP/IP, dengan sendirinya tidak dapat tersambung pada jaringan tersebut.

Setelah periode waktu tertentu, maka pemakaian DHCP Client tersebut dinyatakan selesai dan client tidak memperbaharui permintaan kembali, maka nomor IP tersebut dikembalikan kepada DHCP Server, dan server dapat memberikan nomor IP tersebut kepada Client yang membutuhkan. Lama periode ini dapat ditentukan dalam menit, jam, bulan atau selamanya. Jangka waktu disebut leased period.

Cara Kerja DHCP