Using Netstumbler To Crack Wep Wifi' title='Using Netstumbler To Crack Wep Wifi' />How To Tell If Someone Is On Your Wireless Home Network.You heard the old saying were not alone.Well, the same can be said about your Wireless Home Network.Have you ever wondered if someone else is on your network, with out your knowledge, watching every site you visit or stealing account information from your GMail or bank account Sure you probably went to great lengths to implement and secure your wireless home network, but any Network Security professional will tell you NOTHING is bullet proof.While nothing is bullet proof, being proactive with monitoring can catch the un wanted guestoff guard.So what can you do to monitor and identify if someone is wondering around on your home network You can use some simple tools, when combined, will help you see your Network and give you a view of whos online.NOTE With these tools chances of identifying someone on your network increases, but will NOT prevent them from gaining access to your Network.Other tools exist than described in this article, but the goal is to show you the different type of tools and how to use them.Firewall Logs is a good place to start.If you have a Firewall running on your Computer or on your router, look for suspicious activity by scanning the logs for anything out of the ordinary with inbound and outbound traffic.OqUac/ThWzm45Xt1I/AAAAAAAAAbw/s5sJWbyZU9Q/s1600/1.png' alt='Using Netstumbler To Crack Wep Wifi' title='Using Netstumbler To Crack Wep Wifi' />One method you can use is to look for patterns.Windows Xp Sp3 Keygen Key Changer Windows Genuine Validation Download '>Windows Xp Sp3 Keygen Key Changer Windows Genuine Validation Download .For example, if someone was scanning your computer to see what ports are open, the logs will show continuous activity from the same IP Address an intruders computer sending a stream of data to many different ports to a single IP Address or range of IP Addresses.Obviously, with a smart hacker, they can do many things to cover their tracks, but one thing is for sure, data must be transmitted to probe your computer, and patterns is one method to use for spotting trouble on your Network.DHCP Logs if the unwanted guest is not Network savvy, or security on your router is not up to snuff, they may be able to drop in unannounced, by receiving an IP Address from your wireless DHCP server.Last year, I wrote an article covering popular wireless hacking tools to crack or recover password of wireless network.We added 13 tools in that article which were.The basic idea is to capture as much encrypted traffic as possible using airodumpng.Each WEP data packet has an associated 3byte Initialization Vector IV after.WiFi interview questions What is Piggybacking in context to WiFi, What are the recommended channels if you are setting up three WLANs and want minimum.Certified Ethical Hacker CEH online training is ECCouncils official ethical hacking training and certification course.Get CEH certified with iClass.You can easily view a list of active addresses by connecting to your router and checking the DHCP log.For example, on my Linksys router, the log is located in the Wireless MAC Filter tab and is shown in the screen shot below.I can see and identify all active PCs on my Network.But this does not guarantee that these are the only active PCs on my Network.Why Unfortunately, a more sophisticated hacker can get around the need to rely on DHCP.If they did their homework you can be sure of that, they probably figured out the range of IP Addresses in use on your Network, found an unused address in that range and configure their PC with the static address.Check Whos Connecting To Your Computer Now that you identified the trusted computers are on your network from the DHCP logs, you can check who is connected to your computer.To do this, open a command prompt and enter the following command netstat anwhere a Displays all connections and listening portsn Displays addresses and port numbers in numerical form.Netstat is a useful tool that displays network connections both incoming and outgoing on computers.This will allow you to see all IP Addresses that have made a connection to your computer.Netstat shows you the type of connection TCP or UDP, IP Address and port number number after addresses separated by a colon for both Local your computer and Foreign addresses.To find your IP Address, just enter ipconfig at the command prompt.You should be able to easily spot any addresses Foreign column that is outside the DHCP range on your router and investigate.You can also see what executable are involved in creating each connection by using the b switch with the netstat command netstat bNow this great for checking connections on your Compter, but what if someone is on your Network and not connected to your Computer Scanning your entire Network When Computers communicate with each other, they do so with ports as you saw with the netstat command.Some ports that may be familiar to you are 8.HTTP, 4.SSL.SMTP, 1.POP. 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