2 client PC's & host now experience selected web site fa

Discussion in 'Cisco/Linksys Wireless Routers' started by RadicalDave, Feb 8, 2006.

  1. RadicalDave

    RadicalDave Network Guru Member

    I have a strange issue with a WRT54GS router. Host machine on IE v6, NTL Broadband cable ISP.

    Before WRT54GS install. Host and client PC's accessed websites via ethernet with no issues. IE setup as standard.

    After Install. Two client PC's and the host now experience selected access problems with websites, or with windows in various websites and result in failure to connect.


    works fine.

    Take link to http://www.bbc.co.uk/tv/ (TV Hyperlink)
    works fine

    Return to home page and take link to
    http://www.bbc.co.uk/go/homepage/int/sp/sti/nsport/t/-/news/sport1/hi/default.stm (Sport Hyperlink)
    fails after timeout.

    We have tried various changes to the security setings on the WTS54GS URL, powered down both the router and PC, and still have a problem accessing various websites. We have a suspicion that it may be sites that send cookies.

    Can anyone advise please?

  2. phreak_cypher

    phreak_cypher Network Guru Member

    This sounds to me like a problem with packet-fragmentation, the MTU (Maximum Transmission Unit) or the TCP MSS (Maximum Segment Size). As you can open http://www.bbc.co.uk/tv/, it's more likely the MSS, as this web-page is bigger than the MTU can be (usually 1500 on Ethernet, a bit lower on DSL links), but be sure to clear your browser's cache, in order to get reliable results!

    Is there any HTTPS page you can access? Asking because requests on HTTPS are done differently, network-wise, and the packets are muuuch bigger, because of the SSL handshake, certificate- and key-exchange.

    What type of Internet access is configured on your WRT?
  3. RadicalDave

    RadicalDave Network Guru Member

    Thanks so much for your suggestions...

    HTTPS://Halifax-online.co.uk will not load, IE appears to try for longer to complete the handshake before it displays the failure messages. This site works fine from the same client PC via other networks...

    The Router is configured with both HTTP and HTTPS tick boxes ticked..is that what you meant?

    Sorry to be a dunce, Comms not my thing, I'm an ERP applications consultant would you believe!


  4. RadicalDave

    RadicalDave Network Guru Member

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