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On Monday 14 July 2008, Harry Putnam wrote: |
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> I've had a problem with being able to ping out to the internet from my |
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> gentoo box, while at the same time I'm able to ping outbound from |
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> several windows boxes on same home lan. |
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> |
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> I don't run a firewall at all from linux but do have a Netgear |
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> switch/router/Firewall upstream between me and the internet cable |
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> modem. |
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[snip..] |
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> My router/fw can be set to deny specific machines outbound traffic but |
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> that is not done in this case. So the solution must reside somewhere |
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> in my gentoo install. |
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It may be worth checking your router's firewall rules once more. Is the |
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gentoo box connected to the router in the same fashion as the MSWindows |
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boxen, or is it in some funny DMZ set up? |
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What do the firewall logs show? |
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> What things should I be checking. |
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If as you say you have no firewall on the Gentoo box then you ought to have a |
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quick look at your kernel. Use sysclt: |
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/sbin/sysctl -a |
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and look at your settings probably for net.ipv4.icmp_* or your specific NIC. |
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> A ping attempt like this: |
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> |
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> ping ftp.ucsb.edu |
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> PING ftp.ucsb.edu (128.111.24.43) 56(84) bytes of data. |
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> |
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> Just never moves any further, but you can see it has resolved the |
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> alpha address to numeric forum so must have contacted and received |
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> info from the nameserver. |
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Or from your router if it acts as a caching DNS resolver? |
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Unless you have configured your Gentoo kernel in a way that I am not sure is |
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possible, my money would go on something being amiss with the router firewall |
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settings. |
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-- |
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Regards, |
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Mick |
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