Internet Blog

WiFi HotSpot As we know, hotspots or wireless internet access with standard 802.11b / g are not familiar stuff our ears, and when we go in public places like the Mall, Cafe, hotels and offices, with our easy to find the facility ..

Unfortunately not all providers offer wireless Internet facilities for free, or if free. extremely limited.
One of the protection used wireless service providers is to restrict Internet access based on MAC Address.
What is MAC Address?
In computer networking a Media Access Control address (MAC address) or Ethernet Hardware Address (EHA) or hardware address or adapter address is a quasi-unique identifier attached to most network adapters (NICs) ..
Okay so the conclusion MAC Address is a unique number that distinguishes each network device that is attached dikomputer us.
An example is the hotspot in hotel hilton. At hilton hotspot The Wireless Internet service providers, limiting the use of the Internet is free only for 3 hours, after that you can not access the Internet again, and would not be able to access again tomorrow. Type of protection used is MAC Address Filtering.
How to break through the protection with a MAC Address?

There is a very useful tool for anda.Tools was named K-MAC Download Dicini
With this tool you will be able to change your MAC-Address instantly and what does it mean? You can break the MAC Address Protection!. Each share of Internet access you run out in 3 hours, you need to do is change your MAC address, and do the connection.
I add more for info. WEP/WPA/WPA-2 cracking passwords using
programs are available in packages of OS backtrack
kismet
Kismet is a security tool that runs Linux, Kismet is used to eavesdrop on data traffic in the Internet network.
Aircrak-Aircrak-PTW PTW is a tool used to crack wireless protected. Each of these notebooks with different specs, so any way to use aircrack different.
One trick is also used to search for passwords which are used by someone to access hotspots that use prepaid cards.
Simple tool that prepared aja sih:
Software required:
1. Angry IP Scanner
2. Technitium MAC Address
Immediately wrote now to how:
# Find the location of the hotspot service provider, certainly in the area of ​​affordable hotspot network is ..
# Turn on your laptop, and also turn on your wireless network and see the wireless network system tray icon, then right click and select view avalible wireless network, and of course after that you must connect to a wireless hotspot your destination.
# After connect, right click the system tray and select status> choose details tab> look there ip given to us. Write down the ip.
# Open the program AngryIP Scanner 2.21 and enter the ip range that we will scan (ip data used were we) at the top. For example: 135.125.1.13 IP that we can then enter the ip in the first column of our range in accordance with an earlier but instead of ip numbers at the end of the first to be 135.125.1.1 and the second column write the same but the number one end was replaced with 255 to 135 125 .1.255. result is 135.125.1.1 to 135.125.1.255 and click start (red button).
# After scanning then we'll get a live ip data connected with these hotspots. after scanning is complete then see the ip of the living (alive hosts) blue right click on the live ip ip Right-click on the blue color was right click> show> mac address and there will be a code mac address (mac addresses sometimes there does not appear, select Just the other ip). Write down the mac address that we get.
# Open the program Technitium MAC Address v5 release 3 which we have prepared. There is a mac address field. well now just change the mac address with which we got earlier and press change mac id.
# Wait for our mac will be replaced and a temporary connection and connect again automatically disconnected itself.
# Go to the firefox web browser, or anything goes. Enjoy Free Internet.
One thing to remember is that our system is the transfer of passenger data to hack an account that we had.
It can outsmart the status of hotspot login page enter it (to account). For example status and so go there it looks prepaid card code number and we simply keep track of, then logout and log back into the hotspot's login page quickly enter the password earlier. This will make us can directly access the Internet without a ride again (because that make us prepaid card code) so if anyone wants to login to use the card (which had a code) when you log in using the card of course he can not enter because prepaid cards.
"Already logged".
How about it, interesting is not it?
But I suggest, as I do is to ride alone, because I do not want to go too far, like the way I Tell to log off and log in again will surely make the owner can not log in. Request permission directly is also a possibility that had not refused, the origin of his interests is urgent.
For Ip Scanning can also use the application Dude, download it here, to determine the condition of the computers connect to the hotspot. Can be tried too ya ..
Hmm, i have some usefull tools again, check it.
WEP and WPA KeyGenerator
Wireless Key Generator
run it live programs generate,, and coffee directly into the network key. ...
Or also you used this application "wifi password finder"
seach it self in search engine :D, all this is just for learning, as long as we are still able to use the legal why not wrote. And this can also be used by the hotspot owner, if in this way can still be used to break into. So it needs more security.

Wireless LANs whole point is is the convenience of the mobility you get being able to wander from one part of the office to the other. Users expect the same completely transparent service they get as their mobile phones move from one cell to another, but in the world of 802.11 it’s not actually that easy. There’s a lot of publicity about roaming in Wi-Fi just now, for instance a new IEEE group on testing Wi-Fi has found that it is impossible to compare roaming times without a definition of roaming. While many wireless switch vendors make a point of roaming at Layer 3 (a technology we’ll cover the technicalities of in a later article), several other vendors (such as Bluesocket and Vernier, reviewed here under its HP badge) solve the problem by keeping all access points on a single subnet, so the roaming only happens at Layer 2 and the roaming device keeps the same IP address. What most people miss is that even roaming within a subnet, at Layer 2, has its challenges. What’s involved?

When a WLAN client moves from the range of one Access Point (AP) to another in the same subnet, it needs to find the best AP, decide when to roam onto it, associate with it and do any authentication required, as per your security policies. Then the wired network has to relearn the location of the client, so that data can be sent to it. All of this takes time and this is without the client having to worry about getting a new IP address! The scanning and decision making part of the roaming process (see How to Make your WLAN roam faster) allows the client to find a new AP on an appropriate channel as the user moves. When this happens, the client must associate with the new AP. It must then, assuming that it is an 802.1x supplicant (see The EAP Heap), reauthenticate with the RADIUS server. This is transparent to the user - but the delay in this happening may not be. It can take up to a second for association and authentication to occur (see below for implications and solutions). IAPP
The next part of the process is for the rest of the network to be made aware that the client has shifted. This calls for AP to AP communication, which was never catered for in the original 802.11 spec. Vendors had their own way of passing updates; however 802.11f, the Inter-Access Point Protocol, has now been now published by the IEEE as a trial-use standard - it sits in this state for two years before being submitted as a full-use standard - to facilitate multi-vendor AP interoperability. IAPP calls for the new servicing AP to send out two packets onto the wired LAN. One of these is actually set with the source address of the client (the standard says this should be a broadcast, however some implementations still use unicast to the previous AP or a multicast) and is used by intervening switches to update their MAC address tables with the client’s new location. The other is an IAPP ADD-notify packet from the new AP to an IAPP multicast address that all APs subscribe to, which contains the MAC address of the station it has just associated. All APs will receive this packet, and the one that had been associated with that station will use the sequence number included to determine that this is newer information and remove the stale association from its internal table. IAPP provides for the sharing of information between APs. The format of this information is specified, as "contexts" but the actual content is not defined, so it’s not yet hugely useful as far as vendor interoperability is concerned. Also IAPP has no specific provision for security. Who Cares?
So, worst case, you’re probably looking at about one second where your client can’t be reached over the network. For a lot of clients and applications, this isn’t an issue. If you’re walking from one room to another carrying your laptop, and you want to use email or a web browser, it’s not a problem. In fact, most TCP-based applications will be able to handle this sort of hiccup (remember that in this instance there’s no address change). UDP applications are less able to handle interruptions, and unfortunately, these are the ones where a break would be most noticed by the user. The killer? Voice. Not only is VoWLAN UDP-based for the bearer traffic, but it’s also the one application where you are likely to be using it as you move between APs. And you are definitely going to notice a one second hit. Which is presumably why the vendors that are pushing fast roaming for 802.11 are the ones squarely behind the use of wireless handsets in an IP Telephony environment, such as Cisco, SpectraLink and Symbol. Related standards
In fact these are three of the companies behind the drive for a new IEEE Working Group to create a standard to handle faster Layer 2 roaming. There are several related standards and works-in-progress, but none that actually cover this specific aspect:

* As already discussed, IAPP—802.11f—isn’t designed for speed.
* 802.11i, the security standard (not yet ratified) has provision for secure fast handoff, but it’s too security specific for this requirement.
* 802.11k—Radio Resource Management—might help in that it should cater for faster discovery of APs. Again, not yet finalised.
* 802.21 isn’t specifically for wireless LANs at all. It’s aimed at the handoff between heterogeneous networks (wired, 802.11, Bluetooth) and while it will deal with inter-ESS roaming (ie subnet to subnet in a WLAN), it won’t speed up the Layer 2 process which is needed prior to any Layer 3 interaction. This was the P802 Handoff Study Group, and is just in the process of kicking off now.

Fast roaming now
In the meantime of course, there are proprietary solutions. The two parts that need to be speeded up to cut down outage times are the scanning process (to allow clients to find new suitable APs to associate to), and, specifically for security, a faster way of reauthenicating to cut out the RADIUS request/response process. There are things that can be done to speed up the time it takes for a client to find another suitable AP. An AP can maintain information on its adjacent APs, which it can pass to a client on request—this will give the client a better indication of usable channels to scan, for example. The biggest time saver, however, is reckoned to be in localising the 802.1x authentication process. Cisco has incorporated Fast Secure Roaming into its Wireless Domain Services (WDS) portfolio as part of its Structured Wireless Aware Networking offering, which in effect allows an AP on each local subnet to act as the authenticator for clients. When a client (or other AP) goes through the initial RADIUS authentication, it does it via one AP running WDS. This lets that AP establish shared keys between itself and every other entity in the L2 domain, and allows for quicker reauthentication. Plans are for this capability to be included in Cisco’s router/switch platforms later this year as part of its SWAN development. Symbol provides similar functionality in its hardware, while Airespace) also caters for fast roaming in its wireless switches and appliances, and companies such as Bluesocket, which use gateways to control pretty dumb APs, manage everything centrally. Proxim handles things differently, pre-authenticating clients to nearby APs as well as the one currently in use in preparation for the client moving. So before you get excited about Layer 3 roaming, make sure you understand how your vendor of choice implements it at Layer 2. If that bit’s not fast enough to stop you losing traffic, you’ll never be able to move across subnets. It’s likely to be years before there’s a usable standard in place and in the meantime while you can probably get APs from different vendors to work together, there’s no guarantee of interoperability if you want to turn on their various fast roaming options.