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Thread: Particular browsing problems, unknown source

  1. #1

    Question Particular browsing problems, unknown source

    Hi,

    I have a problem and I havent got a clue what the cause is.

    Since last week, I have noticed that my TWO computers (running opensuse 11.1) have problems dealing with some websites:

    1) My bank virtual office:
    https://oi.cajamadrid.es/CajaMadrid/...?IdVista_s=201

    No matter which user/pass i put, i get a "a problem has ocurred" screen. It happens under firefox and opera. Konqueror in KDE3/4 does not even show the login box!? Try 12345678 for user and 1234 for password if you want.

    2) Rumbo travel: I can search flights but if I click to start the booking process it says "YOUR BROWSER has detected an error" and goes back to front page. Same thing happens with firefox and opera, NOT with Konqueror.

    Both messages are generated by the remote servers (not by my browsers).

    Some facts to take into account:
    1) It has been happening for about one week or two
    2) This problems happen exactly the same way on two computers running opensuse 11.1. The only big difference among them is the kernel (2.6.33 and 2.6.27 for the other)
    3) Problems affect Opera and Firefox. Konqueror acts weird on the Bank site.
    4) Problems DO NOT exist in other computers running windows or linux. Its not a problem on the websites. And they used to work well.
    5) Problems persist in my computers, when connecting through different networks (university, home...), by wifi or ethernet. Other boxes do not suffer them in the same environments.
    6) Yes, i have cleaned up cookies, browsers cach etc...
    7) I have downgraded firefox and opera, and problems persist still.
    8) I have turned off SuSEfirewall and with no luck.
    9) There are no relevant messages in any logs or browser console (just some warnings about "rejected declarations" etc. but no difference of what i have seen on other boxes that actually work)


    The only thing i can think that is common layer on both sites is SSL encrypted connection and javascript, and im not sure Opera and Firefox share any of that, and the problem is still there!. I would be so grateful if someone just put me on track to solve this it... any idea is appreciated!

  2. #2
    Join Date
    Dec 2008
    Location
    GMT-7
    Posts
    382

    Default Re: Particular browsing problems, unknown source

    A couple of years ago, there was a bank site in Canada (PC Financial) that didn't support the default TCP Window Scaling as set in Linux. I had to change that to get that bank site to work. I wonder if that is what's going on.

    See:
    [ubuntu] [SOLVED] Banking Site is very slow - Page 2 - Ubuntu Forums
    Desk: AMD Phenom II X4 945 8GB RAM Radeon HD 3300 Arch Linux Xfce 4.8
    Lap: Intel 2.13GHz Core i3 M330 8GB RAM nVidia GeForce 310M Arch Linux KDE 4.7.3

  3. #3

    Default Re: Particular browsing problems, unknown source

    Tried the proposed solution in that thread with no luck... it's not that it slow, but that login fails without apparent reason. Thanks for the try though.

  4. #4
    palladium NNTP User

    Default Re: Particular browsing problems, unknown source

    arond wrote:
    > Tried the proposed solution in that thread with no luck... it's not that
    > it slow, but that login fails without apparent reason. Thanks for the
    > try though.



    the answer to this problem is, i believe, hidden in this line on that
    web site's front page:

    "The service is optimised for Explorer 5.0 or above and Netscape 6.0
    or above"

    you might TRY the Firefox add-on extension "User Agent Switcher" which
    you can use to 'tell' the server you are running (for example) IE8..

    _sometimes_ just in pretending to be using a less secure browser is
    all it takes to get in..

    Opera has the same masking capability built in, but it is really a
    long way to get to it, try:
    Tools >
    Preferences >
    Advanced >
    Content >
    Manage Site Preferences >
    from the list click to highlight the bank site >
    click Edit >
    click the Network tab >
    at the bottom, change "Browser identification" to "Mask as Internet
    Explorer" or "Identify as Internet Explorer"

    sometimes one bank/whatever site will accept "mask as" for a while and
    then their next 'upgrade' it stops working again...and i switch from
    "mask as" to "identify as" and suddenly the bank's server feels all
    warm, fuzzy and secure again, and lets me in..

    i think is completely stupid that banks try to FORCE us to use the
    least secure browser and operating system on the planet, in the name
    of security..

    --
    palladium

  5. #5

    Default Re: Particular browsing problems, unknown source

    you might TRY the Firefox add-on extension "User Agent Switcher" which
    you can use to 'tell' the server you are running (for example) IE8..
    Yeah, I thought that too, but that's not the problem. I tried changing browsers identification and the bank won't let me in anyway.

    However, it would work on other computers running firefox 3.6 (my version) on linux and on windows. (and it used to work on mine!)

    I also tried downgrading firefox etc without luck. its quite fustrating...

  6. #6
    palladium NNTP User

    Default Re: Particular browsing problems, unknown source

    arond wrote:
    > I also tried downgrading firefox etc without luck. its quite
    > fustrating...


    i understand!

    i live in Denmark and used the largest bank in the land until it
    became impossible to log in and use their netbank...unless i purchased
    (for about 100 USD) a coded key generator...i declined and moved my
    banking business to another bank..

    i have since learned that enough left the big bank that now they
    provide the electro-key generator without cost to non-MS users..

    so: talk to the bank...probably best to call the net banking help line..

    otherwise look for a Linux User Group in your local area/country
    http://www.linux.org/groups/ it was in a Danish group that i found the
    banks that DO work from a Linux machine and any work-arounds needed..

    --
    palladium

  7. #7

    Default Re: Particular browsing problems, unknown source

    Ok, got some news:

    The bank site works in my machine with a different Firefox profile . Now this is reaaally weird because opera is still not working and giving the same message. But firefox seems fine going in with a new profile (I had tried it in safe mode -all extensions disabled- without luck).

    Now, what could be the problem within my firefox profile if I havent changed anything really? I'm thinking it must have been some extension touching the wrong files in a wrong way maybe...

  8. #8
    palladium NNTP User

    Default Re: Particular browsing problems, unknown source

    arond wrote:
    > The bank site works


    strongly suggest you NOT upgrade that browser, change the profile, etc
    etc etc...(until it stops working, when the bank 'upgrades')

    --
    palladium

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