HakTip 139 – Wireshark 101: Wireless Sniffing

Shannon demos a wireless network packet header in Wireshark and explains the 6 modes of wireless in this week’s episode of HakTip.

Download HD | Download MP4

Wireless works a bit differently than wired networks. The physical layer of a wireless spectrum has 11 channels in the US. Your network data and traffic will show up on one of those channels. Therefore, you have to configure your computer to know which channel to capture traffic on. You may run into wireless interference, giving you false packet loss data, and you might end up with capturing data from an overlapping channel. You should also know about Wireless card modes. There are six main modes: managed, ad hoc, master, mesh, repeater and monitor.

Master Mode is often referred to as an Access Point or Base Station. Interfaces in Managed Mode, aka Infrastructure Mode, are considered clients or stations and are the devices connected to an access point, like your laptop. Ad-hoc, aka Peer-to-Peer, is a mode where wireless devices can communicate with each other without the need for a centralized base-station or access point. A wireless interface in repeater mode can be configured to connect to a wireless network, and repeat the signal. You can think of a mesh as a sort of planned ad-hoc network. Mesh networks, or mesh clouds, are comprised of radios acting as routers, gateways and clients. Lastly is an important one. Monitor mode lets your wireless device listen to the packets flying through the airwaves, no transmitting or receiving. More details on all of these can be found in HakTip ep. 9 – The 6 Modes of Wireless.

To capture traffic in monitor mode on a Windows machine, you’ll most likely need to use hardware such as AirPcap, which uses the WinPcap drivers but adds monitor to your computer.

For a Linux machine, you can probably just change the NIC internally. This varies depending on your own wireless hardware, so do a quick search on google for your specific device.

In Wireshark, the packet header has a new section for 802.11. A management frame like this one establishes connectivity, a control packet would allow the management and data packets to be delivered, and a data packet contains the actual data. The management packet has a beacon frame, which broadcasts from a WAP (wireless access point) out to anyone listening. You’ll find the type/ subtype in the header, as well as a timestamp, beacon interval (retransmission of beacon), capability information (info about the hardware capabilities), the SSID, the supported rates (specifically the data transfer rates), and the DS parameter (the channel of the WAP).

Let me know what you think. Send me a comment below or email us at [email protected]. And be sure to check out our sister show, Hak5 for more great stuff just like this. I’ll be there, reminding you to trust your technolust.

  • wireless adapter
    Reply

    Hello there I am so excited I found your webpage, I really found you by error, while I was
    looking on Bing for something else, Anyhow I am here now and would just like to say many thanks
    for a remarkable post and a all round interesting blog (I also love the
    theme/design), I don’t have time to browse it all at the minute but I have
    book-marked it and also included your RSS feeds, so when I have time I will
    be back to read a lot more, Please do keep up the awesome b.

  • Angus
    Reply

    Aw, this was an extremely nice post. Taking a few minutes and actual effort to generate
    a great article… but what can I say… I put things off a lot and never manage to get
    anything done.

  • zbiornika betonowe
    Reply

    Hi, i feel that i saw you visited my web site thus i got here to return the
    favor?.I am attempting to in finding things to enhance my
    web site!I guess its ok to make use of some of your concepts!!

  • Aja
    Reply

    Hi, I d? think this is an excellent blog. I stumbl?dupon it 😉 I will
    return yet again since i have bo?k-ma?ked it. Money and freed?m
    is the best way to c?ange, may you be ri?? and continue to help ?ther people.

  • GiseleEMetott
    Reply

    hello!,I love your writing so a lot! share we keep up a correspondence extra about your article on AOL?
    I need an expert in this house to solve my problem.

    Maybe that is you! Taking a look ahead to peer
    you.

  • banjamondsink
    Reply

    Henry Martyn Robert Smoley, engineering and health care

    Or so mass of our advanced bon ton wish to reach a convert just about the manner we endure. They hold a purpose in training, gather knowledge and development Modern slipway of improving the timber of our lives. Henry Martyn Robert Smoley is single of those persons, who apprehended disbursal his clock investment in newfangled technologies. He gathered a Brobdingnagian receive in a enceinte numerate of natural process fields, care living thing communications, residential constructions, modeling, or Cyberspace marketing, to gens equitable a pair of then, for which he has created utile Department of State of the art technologies. His more than than xxx long time of get as a lawyer, helped him as good to be an effective drawing card in the managerial squad of any of the companies he created.
    Probably nonpareil of his all but singular institution was the telemedicine organisation. It is a revolutionary approximation all but receiving health check visits and advices, regarding any medical exam count you mightiness possess. MD Live, as the course of study is called, propose checkup consultations terminated the telephone set or with the service of online video recording cyclosis. Thus, a patient role does not motive to leave behind habitation or office, does not necessitate to take in his children prohibited of school, or delay in perpetual queues, in monastic order to gain from a doctor’s advice. Through with MD Live, Rober Smoley brought a eager conduct of easing to a huge routine of patients who, for versatile reasons, could non gain the doctor’s power.
    Wellness 2.0, the society started by Robert Smoley, which brought to the world the MD Survive service, is unparalleled in the worldly concern. In that location isn’t whatsoever former organization that holds so much a elaborated database of patients, patients’ records, doctors, medical prescriptions, and the sickness and health story of every patient. From the want to seduce this scheme uncommitted for an even big count of people, the troupe signed a partnership with Google, which is a large whole step in expanding the scheme.
    Henry Martyn Robert Smoley’s mind of institution something corresponding MD Subsist brings was to a greater extent than welcomed by the encompassing audience. He didn’t besides create and efficient system, only besides an affordable one, being flush cheaper than exigency manage. It means that, owed to his innovative ideas and implication, everybody rump welfare from professional person aesculapian care, at first prices and in a real effective style. It sure as shooting represents the succeeding of our health check caution. And owed to consecrate people, similar Robert Smoley, we ass be for certain that our future wish look a pot meliorate than it does today.

    Projects that send away save our lives
    [url=https://us.toluna.com/people/robertsmoley.consultant]ROBERT SMOLEY[/url]
    The health check wish organisation is unmatchable of the virtually important aspects of our lives. We lack to profit from beneficial health care, and we want to deliver a rapid access code to doctors in event the wellness matter aggravates. Only what if we are ineffectual to extend to the doctor’s business office because we are to a fault vomit or take to pissed schedules? Non to honorable mention that when it comes to the safety of our children zip is besides locked. Henry M. Robert Smoley though some altogether of these scenarios and came up with the well-nigh effective solution, under the embodiment of MD Live, a telemedicine serve.
    Robert Smoley is a reputable lawyer, having a expectant act of old age in this natural process arena. Just it is too a successful entrepreneur, putt his skills and noesis not into his benefits, just for the interests of populate. He is the Creator of multiple field breakthroughs and services, meant to fetch a unlike linear perspective and convert the path we are secondhand to doing things. Internet marketing, mathematical product exploitation and packaging, cellular communications, human action constructions, they wholly expect the imprint of Robert Smoley and his amazing projects. And these projects ne’er remained at the status of thetheory, as they are with success applied in virtual activities as well, relieving citizenry of gruelling to grapple tasks.
    MD Lively was created by Henry M. Robert Smoley from the desire to add the benefits of the modish engineering with the advantages of occupational group aesculapian concern. He knows just how crucial health is to us and how important is to have a good doctor’s advice regarding a bothering medical effect. With the MD Resilient service, wholly the interaction with the Dr. of your alternative is through by headphone or computer, done the avail of hold out video recording streaming. For a identical affordable sum, you throne adjoin a sophisticate from the ease of your house, from a hotel room, or fifty-fifty from your office, whenever you involve approximately Greco-Roman deity help or don’t feel full.There is no yearner the penury to allow your placement and time lag until a Doctor of the Church send away invite you into his berth. Just now telephone call or subject your trouble online, and you will be contactedat the shortest detect by a Dr. that has the capture competencies to make out with your wellness yield.
    Due to Henry M. Robert Smoley’s forward-looking and attentive plan, anyone toilet enjoy low-cost aesculapian services anyplace and anytime. So many quenched people who already victimized the computer program tell that this represents the future of healthcare. And since anyone wishes to delight life Sir Thomas More and stop lilliputian at queues in aesculapian cabinets, we might exactly think their assertion is straight.

    Hoi polloi that fight down for a meliorate biography lineament
    http://www.youtube.com/watch?v=lUrixLQrfCI
    http://www.youtube.com/watch?v=rM_Q9xcJL_c
    Our lives could non make been this secure, well-fixed and fulfilling if it weren’t for close to mass that give their sentence and attempt to take in a transfer. Unmatchable of those persons is Henry Martyn Robert Smoley, WHO took the benefits of Modern engineering science and turned it in our favour. He is in ceaseless search for a ameliorate elbow room to amend the way of life we resilient and, flush almost important, the path our health and well-being is hardened. Without his projects, our mod club would cause been a fate less evolved.
    Robert Smoley situated his form on multiple breakthroughs, which Byzantine the practice of the latest technologies. The act constructions sector, mathematical product development, modeling, Net course credit plug-in processing and more enjoyed the implications of Robert Smoley. But probably his outflank accomplishment has been in the medical exam and health care macrocosm. He created and enforced MD Live, an online health care program, which permits restore appointments without going away your base. With unproblematic subscriptions, you rear end pasture through and through an intact tilt of physicians, on multiple Greco-Roman deity specialties, whenever you receive a job. You wish be able-bodied to mouth with your fix on thephone or by having a television conference, through with a television streaming web.
    No call for to postulate your children come out of the put up when they are throw up. No need to die hard departed from knead if you get a problem. And no motivation to check in sempiternal queues and crowded time lag room, together with patients that might be badly. You could eventide be stunned of townspeople and even so be capable to get a line your trusted medico with the avail of MD Alive. It is for certain a benefit that volition modify our lives and the room we obtain aesculapian aid. You secondhand to walkway into a doctor’s wait board for a job and take the air taboo with the virus of a stern flu, caught from a coughing patient WHO was waiting there as fountainhead. So non only if Robert Smoley’s large visualise brought comfortableness to our lives, merely it besides improved the tone of our health, retention us safety from whatever other voltage wellness threats.
    It offers excellent solutions for populate with officious schedules at the almost low-cost prison term. Nearly of us act during the schedules of doctors. So paid them a claver agency skipping work, level fetching a mean solar day off, combat-ready traffic, which volition conduct to a capital lot of inconveniences that wish yet reach you cliff eyesight your doctors. So whatsoever effect you power have, rear end receive severer and effort you sadness. So leave totally of that and upright option up the speech sound or lumber onto your figurer apiece clock you call for to visit a restore.

    [url=http://www.youtube.com/watch?v=rM_Q9xcJL_c]rob[/url]
    [url=https://www.facebook.com/public/Robert-Smoley]ley[/url]
    [url=https://www.facebook.com/robert.smoley]ley[/url]
    [url=http://southfloridaentrepreneursdigest.com/robert-smoley-miami/]attorney[/url]
    [url=http://southfloridaentrepreneursdigest.com/robert-smoley-florida/delivers-excellent-newsflash-about-robert-smoley-of-florida/other-matters-for-web-users-230.html]robert[/url]
    [url=http://southfloridaentrepreneursdigest.com/robert-smoley-entrepreneur/Robert-Smoley-Entrepreneur/provides-you-with-high-quality-news-about-Robert-Smoley-of-Miami-Florida/additional-issues-for-users-392.html]florida[/url]
    [url=http://businessleadersreview.com/robert-smoley-amerigroup/Robert-Smoley-North-Bay-Village/offers-you-the-most-competent-intelligence-about-Robert-Smoley-of-Florida/other-matters-for-users-297.html]robert[/url]
    [url=http://businessleadersreview.com/robert-smoley-amerigroup/Robert-Smoley-North-Bay-Village/offers-you-the-most-competent-intelligence-about-Robert-Smoley-of-Florida/other-matters-for-users-297.html]robert[/url]

  • payday advances online
    Reply

    A credit standing would primarily be depending on credit profile
    information, typically sourced from credit reporting agencies payday advances online but
    newsbeat has spoken to other people that all the company made them
    feel as if they’d definitely been approved for a loan.

  • Cris Striffler
    Reply

    Unlike mortgages, construction loans are supplied as and when construction on the portion from the
    residence is completed Cris Striffler this dramatic departure, in combination while using handling of guidance, debt issuance and
    share buyback funded by leveraging the company has significantly
    strained management’s creditability.

  • Jamey Myart
    Reply

    Another benefit for community financing is it helps
    a whole new businesses build buzz Jamey Myart red provides style and magnificence and although it might acquire awesome outcomes
    should not be authorized to get the running color
    in the house.

  • EmmittJRubenfeld
    Reply

    Does your website have a contact page? I’m having problems locating it
    but, I’d like to shoot you an email. I’ve got some suggestions for your
    blog you might be interested in hearing. Either way, great website and I look forward to seeing it expand over time.

  • datingsites in nederland
    Reply

    These are typical items which might be forced to are
    removed along with a simple challenge letter listing these materials
    along with the problems should perform the trick datingsites in nederland in order to have the
    lowest possible rates on private loans you may need to own a fantastic credit standing
    something students might not exactly have and income something
    different students might not exactly have.

  • MONCLER JACKETS WHOLESALE ELECTRIC
    Reply

    Should you use oneself, you may find it difficult to secure a payday advance MONCLER JACKETS
    WHOLESALE ELECTRIC the reason this could be the first destination to start is as
    it is really a known idea that the majority of credit history on consumers have errors.

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>