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Make sure you have valid dns servers in /etc/resolv.conf...
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  1. #11
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    Make sure you have valid dns servers in /etc/resolv.conf

  2. #12
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    DNS is correct.

    Look at this detail: The gateway is a RedHat box. When i install debian on the workstation, i don't have net, only LAN. The same with gentoo, mandrake and college linux. The only distro that have internet in my workstation is RedHat. Could it be a distro problem?

  3. #13
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    First of all: When you try and ping an external site, do you get an error (let some seconds pass), or do the requests only time out?
    Try installing ethereal on the RedHat box and look at what happens to packets. Look at both the IP _and_ MAC addresses.

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  5. #14
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    Are you sure ipmasq is working correctly on the redhat box?

  6. #15
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    Check what "cat /proc/sys/net/ipv4/ip_forward" returns (on the RedHat router box).

  7. #16
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    if you can't ping outside your network you might not have your routing tables set up correctly. Are you positive that /sbin/route -n is correct? Let us see the output, more eyes make every problem shallow if you know what I mean.
    I respectfully decline the invitation to join your delusion.

  8. #17
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    Sorry guys for not responding since friday... I've been busy. I'll respond agan very very soon

  9. #18
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    Quote Originally Posted by Dolda2000
    Check what "cat /proc/sys/net/ipv4/ip_forward" returns (on the RedHat router box).
    the output is: 1

  10. #19
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    Quote Originally Posted by genlee
    Are you sure ipmasq is working correctly on the redhat box?
    Yes, if i install RedHat or windows the network computers can access the internet perfectly

  11. #20
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    How have you configured the router? Could you give the output of this (on the router)?
    Code:
    for table in `cat /proc/net/ip_tables_names`; do echo $table; iptables -t $table -L -n; echo; done

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