Ping, anyone?

Discussion in 'Networking and Computer Security' started by dannnyjos, Dec 5, 2005.

  1. dannnyjos

    dannnyjos Big Geek

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    Hey guys. Just a quick one. I always thought that "ping" was the first thing you try to test connectivity, right? So, if can't ping somewhere, you wont be able to comunicate with it through the upper layers (ie. through a Browser). Or could you?
    My friend built this website, and it's so weird that we can't ping to it ("time out") but we can get to it through IE and the FOX. Anyone has any idea why is this happening? I believed if you couldn't ping you couldn't communicate at all. Any suggestions :confused: ?
     
  2. Impotence

    Impotence May the source be with u!

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    Many websites (The servers that they are on, or the routers etc they are behind) will refuse to responf to a 'Ping' as it is a very common way to obtain an ip address [its a security thing].

    You will notice if you ping google you get an ip for there main server, you can ping 90% of websites.
     
  3. Anti-Trend

    Anti-Trend Nonconformist Geek Staff Member

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    Some websites make use of ICMP Echo (aka Ping), e.g. www.google.com, and some don't, e.g. www.microsoft.com. It all depends on your routing policies. Blocking ICMP echo doesn't necessarily mean they're also blocking port 80.

    -AT
     
  4. Addis

    Addis The King

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    A failed ping doesn't necessarily mean that the server is offline, maybe because its just blocking all ping traffic.

    Pinging isn't the only way to find out ip addresses, an ip address can be found from a simple whois query.
     
  5. dannnyjos

    dannnyjos Big Geek

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    Yeah, I was thinking that they could just be blocking all ICMP packets/traffic, but wasn't sure until you guys brought it up. Thanks to you all :good:

    P.S. ADDIS, what's a "whois query" ? An who do you use it?
     
  6. Impotence

    Impotence May the source be with u!

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    www.dnsstuff.com

    ^great site, i use it for getting the IP's of websites to bypass the School DNS (meaning i bypass most of the content filters)
     
  7. dannnyjos

    dannnyjos Big Geek

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    Thanks for the site PublicEnemy
     
  8. Impotence

    Impotence May the source be with u!

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  9. dannnyjos

    dannnyjos Big Geek

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    NICE sites PublicEnemy ;) !!!!
     

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