Cant connect to google.

Discussion in 'Cisco/Linksys Wireless Routers' started by Ericc, Jul 20, 2007.

  1. Ericc

    Ericc Guest

    I just purchased a wireless WRT150N and am able to access most sites. I cannot for some reason access google when using the WRT150N. If I connect via CAT5 cable directly to the cable modem or if I connect to my neigbors wireless net I can access google just fine. I can also ping google through the Diagnostics section of the lynksys setup. This problem exists on both of my computers, even after i upgraded to the newest firmware. Any Ideas??? It almost seems like the router has blocked the page for some some reason?
  2. Steve Smith

    Steve Smith Guest

    Give your router some cookies :biggrin:

  3. Rekoil

    Rekoil LI Guru Member

    Nice and subtle hint there Steve Smith :p
  4. eric_stewart

    eric_stewart Super Moderator Staff Member Member

    I'm wondering if this might be an MSS issue. MSS stands for Maximum Segment Size and is dynamically negotiated between an MSS-compliant WWW Client and Server. (or any other application that sits on top of TCP) The idea is that once they have negotiated a particular segment size (effectively a layer 4 MTU) the client and server are bound to this agreement and must not transmit data in segments over that maximum. Some firewalls (like the PIX and ASA) will test all subsequent inbound segments from a server to see if they "honour" this MSS. If they don't, the segments are dropped and the firewall will log this activity if it is configured to do so.

    Cisco's got a document here. Coincidentally, I was just reading the article yesterday because I'm having the same problem from time to time and only when I'm connecting to Google across my home network!

  5. kingvj

    kingvj Network Guru Member simple terms, reduce MTU to 1475/1450/1425. Trigger port 443 if required.
  6. eric_stewart

    eric_stewart Super Moderator Staff Member Member

    Huh? The MTU is the frame size. Data Link Layer....OSI Layer 2. It's got absolutely nothing to do with what I was talking about. simple terms.

    /Eric ;-)
  7. Toxic

    Toxic Administrator Staff Member

    could you tell me what type of wan connection do you have? ADSL or Cablemodem? and what the MTU is set at presently. the MSS is a real issue, I had read about this somewhere else a while back but you might also be experiencing packet loss due to the wrong MTU being assigned either manually or automatically or a badly configured router.

    since when adding the router gives you the issue, try resetting to factory defaults first of all incase the firmware upgrade is conflicting with NVRAM variables from the new and old firmware settings.
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