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Disable SSID Broadcasting & other things

Discussion in 'Networking (Hardware & Software)' started by oserdavid, 2007/03/17.

  1. 2007/03/17
    oserdavid

    oserdavid Inactive Thread Starter

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    There's a thread over 6 months old which deals with this problem, but of course, it's a dead thread now - so, here goes: the problem with disabling your SSID, once you have set up your network is that your own machines can no longer find the router. The solution is said to be to start the setup again, with SSID disabled in the first place. However, I'm reluctant to mess with a satisfactorily working network, because if something goes wrong with the re-setup it could involve hours of work!! (been there, done that...Especially the problem if getting the printer sorted as well - believe me, it can be hell). Is this the only way of doing it, or is there a simpler solution?

    Similar considerations apply with junking 128 bit WEP in favour of WPA... I've changed my router password, I have 128 bit WEP plus restricted MAC address access. It's a home/work installation in a suburban (almost innner city) London street, where all the neighbours (at least 4 in 'view') also appear to have secured networks, and there appear to be no unsecured ones. But how paranoid would I need to be to change WEP encryption for WPA encryption?
    David

    Win XP Pro SP2 - fully up to date
    Firefox 2, regularly updated
    Thunderbird 2, regularly updated (it's an addiction)
    F-Prot Win version 6
    ZoneAlarm Pro 6.5
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    Windows Defender
    Spybot S&D 1.4 (Advanced mode)
    Wot - me paranoid?:eek:
     
  2. 2007/03/17
    TonyT

    TonyT SuperGeek Staff

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    I have never ever had any trouble connecting to my own or other wlans when ssid broadcast is disabled in the AP. It seems to be a system specific issue if & when that issue occurs.

    The way to connect to a WLAN that USED TO HAVE ssid broadcast enabled and NOW is disabled is:
    1. open wireless zero config via icon in taskbar
    2. click "view available wlans "
    3. click "change order of preferred networks "
    4. manually add your wlan to the list

    Disabling ssid broadcast is a very very very tiny layer of security anyway. It just means that a Windows computer won't detect the wlan when Wireless Zero Configuration Service scans for available wifi networks. But a linux computer will see it and many Windows wifi scanners will also detect the ssid.

    The ssid is sent inside EVERY packet transmitted to & from the AP (even if AP ssid broadcast is disabled), thus any network traffic sniffer will capture the ssid. The ssid MUST be contained in the packets so sensible routing can occur.

    As for WEP vs WPA. WPA is much more secure. WEP 128 bit can be deciphered in about 5 min to an hour using simple packet injection techniques. However, if you use mac address filtering then that is your strongest layer of security and it's unlikely that anyone will be cracking your WEP encryption anyway. Probably less than 1 in 100,000 have any inkling at all how to crack it (experience at it) and only 15-20% of them would actually do it. That's about 2 in a million to worry about!
     
    Last edited: 2007/03/17
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  4. 2007/03/17
    oserdavid

    oserdavid Inactive Thread Starter

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    Thanks TonyT for a breath of fresh air - commonsense reassurance. I won't bother to disable my SSID - who cares if everyone can see there is a particular brand and model of wireless router operating in the neighbourhood, where one person has given his router the name of the street, and another, poor sod, his own surname... (But he should be proud: there's no way this guy could have set it up himself...)

    Edit - by the way TonyT - while I wouldn't dispute the first half of your L Ron Hubbard quote (after all, it is 'every man's right to go to hell in whatever way he chooses' - I think that was an old SF colleague of LRH, John W Campbell Jnr) the second half of the quote is very easily falsified in any number of ways, many of which can kill you! F'rinstance, it may not be true for you that jumping out of a 20th story window will most likely be terminal - but it is still true... But the truth of the matter is, it's always fruitless to command someone to believe anything at all.
     
    Last edited: 2007/03/17
  5. 2007/03/18
    TonyT

    TonyT SuperGeek Staff

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    LOL! Yes, I agree.
    However, it may not be true that the jump would kill a man, it's definitely probable he will be killed though. That does not mean that the uninformed should actually jump in order to know what is true or false. A similar datum is "play w/ fire. get burnt ". One need not stick his hand all the way in the fire to know what would happen, but one must feel heat at some distance in order to then judge what would happen. The point is, don't just take the other fellow's word for it, find out for yourself, but find out what is true w/out causing oneself harm. Unfortunately, they no longer teach that to kids in schools today, they teach by authoritarian principles: "this is the way it is, don't question authority ". When seeking any truths, one should ask oneself, "How is it so? How isn't it so? How does this apply to me? ".

    Cambell was quite a guy from what I've read about him.
     
  6. 2007/03/19
    visionof

    visionof Inactive

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    Logging onto to non broadcast ssid network

    Depends on your wireless utility and its settings.
    And of course your OS.
    You can set the wirelessly utlility to log on automatically.
    You can usually just place the ssid name into the wireless utility with the name of the hidden ( non broadcasting) ssid.
    Once it logs on on ( after you enter the wep codes) you should be ok.
    You can use third party wireless utilities if you need to.
    There was one called WINC at downloads.com .
    The newer network magic can also act as the default wireless utility.
    It is fairly routine.
    Some of the setups of the newer model /versions of routers are set as default not to broadcast their ssids.
    It is still remarkable what you can do searching for ssids of "Linksys" , "Wireless" or "Default ".
     
  7. 2007/03/19
    oserdavid

    oserdavid Inactive Thread Starter

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    Yup. Thanks visionof - I think that was what TonyT was saying. But, in the end I decided life is just too short to bother, and, hell, let everyone see there is a Belkin_wotst_wotsit_ADSL router in the district. I got 128 bit WEP and MAC access control and changed my password on the router and someone would have to be pretty determined on breaking into my system to bother, and why would they do that, when there are plenty of easier systems to break into? 'snot as if the crown jewels are there, anyway...:eek:
     
  8. 2007/03/20
    TonyT

    TonyT SuperGeek Staff

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    Belkin_wotst_wotsit_ADSL
    (...Tony saves ssid name just in case make the trip to England) :)
     
  9. 2007/03/20
    oserdavid

    oserdavid Inactive Thread Starter

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    Yay! Paranoia is a way of life! (Ned: An American I shared an appartment with, back in the 60s)
     
  10. 2007/03/20
    TonyT

    TonyT SuperGeek Staff

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  11. 2007/03/20
    oserdavid

    oserdavid Inactive Thread Starter

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    I'm just going to assume you have a perfectly legitimate reason for using such a device, so you can access your own router when you're working at the bottom of the garden. Anything else would surely degrade someone else's broadband performance, even at its most 'innocent' use - and I'm certain a nice guy like you wouldn't want to do that to some poor unsuspecting sod... :) who's wondering why they are not getting anything like the throughput their ISP advertised.
     
  12. 2007/03/21
    TonyT

    TonyT SuperGeek Staff

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    I use it mainly to test security of clients' wlans and to connect to hotspots when in the city. There's lots of free open wlans in Wash, DC provided by restaurants, stores, business associations, etc. For example, I am in a parking lot at present (7:35 am est) at client's building, & these are the available wlans (w/out the cantenna).
    http://members.cox.net/tonyt/stumbler.jpg
     
  13. 2007/03/21
    booBot

    booBot Inactive

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  14. 2007/03/24
    oserdavid

    oserdavid Inactive Thread Starter

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