How to kick intruders out of our Wifi

Some time ago we showed you how to hack the password of a Wifi, but in this case we will do the opposite, learn how to protect it and to kicking intruders out of our Wifi.

Wifi intruders

At first it may seem like a complicated task, but you will realise right now that this is not entirely true. The first thing we have to do is to detect that we are being robbed of Wifi, and to do this we will use tools that measure the speed of our connection. The most commonly used is TestdeVelocidad.esa website dedicated solely and exclusively to this function.

Something we have to take into account when starting the test is that, on our part, the network has to be totally free, that is to say, not being used for downloads or browsing, as this could distort the measurement. Another point is the fact that the speed that actually reaches our homes is not even close to what we have contracted, for example, with a 20mb connection I get about 7mb at most.

Well, once the problem has been detected, now the coherent thing to do is to confirm it by looking at the connections made to our router, for which there are some very good programmes, AirSnare, a little out of date, and Zamzom, the same, but a little more limited.

Now for the ways to protect ourselves, first of all we should try to use the new encryption methods for our Wifi such as WPA/WPA2/WPA2-AES.

The second thing is to change the password of our router, which normally comes by default and is easily detectable through lists like this one or this one.

By carrying out these tips, our Wifi connection will be safe from intruders.

6 thoughts on “Cómo echar intrusos de nuestra Wifi”

  1. Hello,

    With apologies for any concerns that the "affected" interveners may have, I think this is all rather silly, since:

    I. The 'slowness' of computers and their communication with the Internet is usually mainly due to:
    A. Viruses, Trojans, and other 'companies'. Having an "up-to-date antivirus" does not at all mean that we don't have this kind of junk, especially if we work as administrators (90% of the cases). Yes, antivirus is necessary but it is not a panacea against human stupidity.
    B. Services of all kinds that are running on our computer without any sense, including new services that automatically set up many programs that we may use once a month (or less).
    C. Updates of all kinds and species, among which we can mention Windows Update (this service should be left as it is if you don't understand how this works), updates from Adobe, Flash, Java, Google (almost all Google programs, beware, and they are very heavy, even having one or more 'update' services), etc., etc., etc., etc., etc. All these programs communicate with "your page" every time you open them, or even several times a day...
    D. Slower-than-bad-horse DNS servers offered by Internet providers (especially 'timofonica') to 'help' us transfer less. Even some 'bad companies' can embed their DNSs which, of course, are not fast at all but redirect very well; you can see them because almost all of them have something to do with 'sex', 'xxx' and the like...
    E. Even the paranoia that 'no one will connect to you' may lead you to install a series of programmes "to prevent and control intrusion" which, for a change, will slow down your internet connection... .....
    F. ........o, even in your eagerness to secure your PA, you will run the risk of messing up and dislodging it .....
    II. Having reviewed the above (and a few other things I've left out), you should think and reason the following:
    A. There are very few people (especially Spanish-speaking people - we are among the dumbest in everything) who really know how to crack a wifi connection: for every one who knows how to do it, there are 50 imbeciles who 'pretend to do it', but they tend to be very dumb...
    B. Why do I say this? Well, look, kid, if someone 'sneaks in', think about one thing: who is the administrator of the network? Well, you are, with all that that entails. In other words, a station has connected to the server that you administer (to sum it up) ....
    Do you understand what I'm saying? With a little effort you will get access to that computer (man, you have to know something too...), at least to its shared documents...
    Connecting to someone else's network is asking for unnecessary problems, even a 'bouncing' virus...
    C. On the other hand, with the prices of today's providers, I don't see the benefit of all that hassle, when you can have your own access.
    D. There is even free access in libraries, bars, pizzerias, Gowex-Wifimax (in Spain), in the buses of some cities, in airports, hypermarkets, shopping centres, etc. etc. etc. etc. etc.
    E. Do you think that anyone with two fingers in front would be interested in complicating your life by cracking you up and 'stealing your line' with all these setbacks?
    So, as I said: check what I said in point 1 and you will see how your speeds increase.
    Best regards.

    1. Alberto Navarro

      Thank you very much for your contribution Edy, I'm sure it will open the mind of more than one person on this subject.

  2. it is true, the mac can be cloned and you are denied access to your pc and the intruder pc accesses it.

  3. In addition to these tips, which are good, I would add that you should enter the configuration of your router by entering the ip of the gateway .... in the browser, which is usually, and once inside the router, activate MAC filtering.

    On each of your computers that you want to connect, open an ms-dos command console and type "ipconfig /all". Write down the MAC of your computer that appears and add it to the list of secure MACs in your router's configuration.

    In this way you are forcing only certain physical adapters to access your router.

    This is quite safe in combination with the above methods...


  4. Thanks for the tips, they are very useful... sometimes the internet gets slow and it's because of ...... xD .... We have to protect our networks better...

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