network performance analysis

Discussion in 'Linux Networking' started by Wenjie, Aug 28, 2003.

  1. Wenjie

    Wenjie Guest


    Recently I ran into a degrading situation on network performance:
    my ADSL connection (512K UL/DL) even has problem to open a simple
    HTML page now and then. I have a website serving friends for fun
    with dynamic DNS. That could be used nowadays practically.
    My friends outside my country cannot access the webiste even with
    naked IP. I have a router behind the ADSL modem, accepting only 80
    port data (no PING allowed). After several hours the router will
    ( I set auto restart) which was not the case weeks ago. The router's
    power supply was changed weeks ago.

    I consulted my ISP, they told me that recently the Blaster virus
    had some impact on the overall network performance, but it shouldn't
    be that much. (OK, never believe them totally)

    I remember once upon a time my website had been hacked with an
    page, but seeing no intrusion to the computer and I guess the router
    has been

    I have a general question: what should I look into step by step to
    resolve the problem(s)? Are there some good tools for me to gathering
    data and do some diagnosis? I am not afraid of learning, even it
    is tricky ;-) I will not decline changing the router or whatever
    if the bottleneck found there.

    BTW, I am about to advocate Linux locally (intro-tutoring at home)
    and that's another reason that I should find a solution for the
    network performance :p

    And of course I am using linux, redhat 8.0. The router is a local
    ADSL the same.

    Thank you and best regards,
    Wenjie, Aug 28, 2003
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  2. Wenjie

    Xyerp Guest

    Something like ethereal will sniff.. could be handy?
    Xyerp, Aug 28, 2003
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  3. Wenjie

    Klaatu Guest

    Iptraf is good
    Etherape will give you an interesting gui
    Klaatu, Aug 29, 2003
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