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Hit of an odd problem...

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  • 03-09-2002 9:51am
    #1
    mayhem#
    Registered Users Posts: 2,051 ✭✭✭


    Lads,

    I've ran into a bit of a problem with a new network I've setup.
    None of the workstation seem to be able to access any website outside the network (i.e. seem to have no Internet access).
    However I can ping any IP or http address outside the network and I can use mail no problem. I've changed the connection setting in IE around a bit but it doesn't make any difference. Does anyone have a clue what could cause this?


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    #2
    Rew
    Moderators, Sports Moderators Posts: 8,679 Mod ✭✭✭✭Rew


    Few more details would help.
    OS's involved, what the internet conection is and how it is shared etc...


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    #3
    mayhem#
    Registered Users Posts: 2,051 ✭✭✭mayhem#


    OK, hte workstaion are running a mixed batch of Win 98 & XP also IE 5 & 6.
    The server runs a stripped down Samba kernel. Internet connection is ADSL and shared through a proxy...


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    #4
    Kali
    Closed Accounts Posts: 6,601 ✭✭✭Kali


    sounds like a dns problem...
    check that named (or if its windows, dns service) is running on the proxy machine.


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    #5
    Rew
    Moderators, Sports Moderators Posts: 8,679 Mod ✭✭✭✭Rew


    Which proxy is it (squid?)

    When you try access a webpage what error do u get (unreachable, name lookup failed etc..)

    Im assuming the server is Linux running Samba for sharing its harddisk...?


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    #6
    mayhem#
    Registered Users Posts: 2,051 ✭✭✭mayhem#


    The server is one of these (http://www.net-itech.com/europe/index.htm) yokes. And while it's a breeze to setup, it's not very transparent i.e. you do not have as much access to the nuts 'n bolts of the system.
    I have a suspicion that DNS is the direction I have to look at allright.
    Will post back later how I get on....


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    #7
    BogoBot
    Closed Accounts Posts: 88 ✭✭BogoBot


    If you can ping an internet name then I would not be so sure that DNS is your problem.

    Is there any firewalling set up? Prehaps port 80 traffic is being dropped/blocked?

    BogoBot.


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    #8
    Kali
    Closed Accounts Posts: 6,601 ✭✭✭Kali


    Originally posted by BogoBot
    If you can ping an internet name then I would not be so sure that DNS is your problem.

    you're right, i didn't see the mention of "http address" in the first post... if in that case you can ping and use nslookup traceroute etc (i.e. traffic that won't go through a web proxy) with both hostnames and ips.. then look again at squid... its the problem


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    #9
    Cond0r
    Registered Users Posts: 513 ✭✭✭Cond0r


    If you can ping domain names(ie www.something.com) it's not a DNS problem.
    Sounds more like port 80 is being blocked by the firewall/proxy.


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    #10
    Gaz
    Registered Users Posts: 1,586 ✭✭✭Gaz


    Make sure your not blocking http ...port 80 isnt it ? Pings use a differnet port , icmp ..whatever port that is


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    #11
    Magic Monkey
    Registered Users Posts: 1,068 ✭✭✭Magic Monkey


    I have had this problem too (sort of). If you have ZoneAlarm running on a Windows machine, load it up when you try a web address, and see if it's blocking the browser, or just shut it down altogether.

    I had this problem in Windows 2000. There was no system tray icon for Zonealarm when I logged in; it was running in the background. Once I loaded it up, I found out it was blocking some program's access (IE, Netscape, etc...), and when I granted them access, all was well. Took me a few days to figure it out though :(


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