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12-15-2004, 09:19 PM
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#1
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LQ Newbie
Registered: Dec 2004
Posts: 6
Rep:
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Cannot connect to machines outside of network
Hi there,
I'm finding I'm having a strange problem, and let me start by explaining what I've already done:
The machine in question is a Rebel.com Netwinder OfficeServer (Armv41) which I just want to turn into basically a development machine. It had a very old version of Redhat ARM on there which I think was 7.2, and I recently upgraded it to I beleive 9. (2.4.2? kernel)
Anyways, as far as networking was concerned it was working just fine before I did the upgrade, however now I have a very bizarre problem.
It seems that while I am able to ping machines outside my network (ie google.com) and receive a response, I am not able to connect to them using http, ftp, ssh or anything else that I've tried. The connection simply times out.
I am however able to connect to my webserver locally just fine, and am able to SSH to it and all that. All my other machines are able to access the internet fine, just not this one.
Currently I'm going to be going through the routing configurations and all that to see if I can find what might be going on, and I've searched through the archives here and haven't really found much along these lines.
Thanks for any help
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12-15-2004, 10:04 PM
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#2
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Member
Registered: Mar 2004
Location: KY, USA
Distribution: Fedora Core 1
Posts: 190
Rep:
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When you ping www.google.com, did you use their IP or www.google.com. If you used IP for pinging, then this looks like a DNS settings problem (you computer doesn't know the DNS server to which it should ask for DNS resolving). Give more details about your distribution and DNS settings if you pinged using IP. Otherwise, I'm not sure what is going on here.
~Sarav
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12-15-2004, 10:33 PM
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#3
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LQ Newbie
Registered: Dec 2004
Posts: 6
Original Poster
Rep:
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Quote:
Originally posted by saravkrish
When you ping www.google.com, did you use their IP or www.google.com. If you used IP for pinging, then this looks like a DNS settings problem (you computer doesn't know the DNS server to which it should ask for DNS resolving). Give more details about your distribution and DNS settings if you pinged using IP. Otherwise, I'm not sure what is going on here.
~Sarav
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No the DNS is working fine, I pinged google.com and not the IP.
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12-16-2004, 10:37 AM
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#4
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Member
Registered: May 2001
Location: Canada
Distribution: old ones
Posts: 555
Rep:
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Is your firewall dropping the packets? It might be letting ICMP through but blocking or dropping HTTP, FTP, etc. Try shutting off iptables to see if that's the culprit.
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12-16-2004, 12:19 PM
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#5
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LQ Newbie
Registered: Dec 2004
Posts: 6
Original Poster
Rep:
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I'll try that when I get home & report back.
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12-16-2004, 06:23 PM
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#6
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LQ Newbie
Registered: Dec 2004
Posts: 6
Original Poster
Rep:
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Turning off iptables didn't seem to work, but I'll look further into this since I suspect you're probably right in that it's some kind of firewall configuration problem preventing me from accessing outside networks.
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12-17-2004, 07:49 AM
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#7
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Member
Registered: Dec 2004
Posts: 145
Rep:
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Maybe Redhat 7.2 has a firewall: ipchains/ipfwadm, and still exist after your upgrade?
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12-17-2004, 10:27 AM
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#8
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LQ Newbie
Registered: Dec 2004
Posts: 6
Original Poster
Rep:
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The upgrade was done using a disk image, so nothing of rh7.2 exists on it anymore.
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12-18-2004, 12:30 PM
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#9
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Member
Registered: May 2001
Location: Canada
Distribution: old ones
Posts: 555
Rep:
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does it have shorewall? type "shorewall stop" at the command prompt to see what happens. This seems like a firewall issue to me as well. It's possible that what is happening is your requests are getting OUT, but the replies from the external Internet aren't able to get back IN. Set some IPTABLES rules to "allow all" rather than shutting it off.
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12-19-2004, 08:54 AM
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#10
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LQ Newbie
Registered: Dec 2004
Posts: 6
Original Poster
Rep:
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I just gave up on it and installed debian 3.0 :P
Thanks for the help though guys....muchly appreciated!
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