Base Filtering Engine in Vista causing very slow DNS lookups and slow internet performance

Discussion in 'Windows Vista Security' started by gtforce, Sep 27, 2007.

  1. gtforce

    gtforce Guest


    I just figured out the reason for my extremely slow DNS lookups. It is
    Base Filtering Engine service in Vista. If I stop this service,
    everything runs at blazing speed. As soon as I start it again, when I
    try to go to a web site for the first time in that windows login
    session, it takes about 10-20 seconds for the "Looking for"
    message to disappear in Firefox, and after that, the page loading is
    relatively slow, too, saying "transferring..".

    Similar behavior, if I use IE.

    I'm using ZoneAlert, and Windows Firewall is disabled. Also, I have
    Spybot Search and Destroy and AVG Antivirus. Disabling these do not
    change anything.

    If I visit a web site that was visited before, during that windos
    login session, I do not see the wait during "Looking for www...".

    I have no clue what the problem is, or how to fix it, beyon this
    point. Any help is appreciated.

    Thank you.
    gtforce, Sep 27, 2007
    1. Advertisements

  2. gtforce

    David Guest

    disabling a program is not the same as uninstalling it. try that next.
    start with zonealarm. keep us posted.
    David, Sep 27, 2007
    1. Advertisements

  3. gtforce

    gtforce Guest

    I think, the culprit is my VPN connection. After I tried a number of
    things, messing with my network settings, now (I don't know why now,
    and it wasn't before) after I log into Windows, the first time I use
    the browser, it asks if I need to connect to my VPN. I choose "Do not
    ask again" and cancel, and everything works fine.

    I don't really know what's the connection between VPN and Base
    Filtering Engine service, but there seems to be a bug in Vista about
    VPN, since I remember reading somewhere one other guy saying that he
    had trouble with his internet connection, and turned out it was his
    VPN, so he removed it. At least, I did not need to remove mine.

    VPN should engage, when you ask it to connect, and should stay silent,
    when it's disconnected. Clearly, for some reason only MS knows, that
    is NOT the case in Vista. The VPN connection interferes with your
    regular direct connection, even when it's disconnected, and this is
    what is causing trouble. I hope MS will fix this in Vista SP1.
    gtforce, Sep 28, 2007
  4. gtforce

    gtforce Guest

    ok, this is driving me crazy. After I "thought" I solved the problem,
    it came back. This time, I completely deleted my VPN connection, and
    it made absolutely no difference.

    I restart my computer, everything works for a random period of time
    (max 2 hours or so), and after that, I start getting EXTREMELY slow
    DNS lookups, my Firefox saying "Looking for [insert web address]".
    Once it resolves the address, if I try that address again, it connects
    without any wait.

    When this problem starts happening, if I disable "Base Filtering
    Engine" service, the connections become essentially instant.

    I have no idea, why the computer works fine after a restart, and after
    a random while, it starts having this problem. Anyone have any
    suggestions about this delayed nature of the problem?

    I also tried several DNSs, (my ISPs, a public one, and OpenDNS), and
    that seems to make no difference, as expected.

    Anyone else having this problem?

    gtforce, Oct 3, 2007
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.