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I am unable to ping an IP address on a Amazon EC2 instance. When I do it from a Mac or Linux machine, it works just fine. But, on Windows 7 it doesn't work.
I've tried turning off the firewall, but that doesn't seem to work either. Pinging any other site like www.google.com or Mac.com works fine.
Any ideas?
maximus
Posted 2011-10-27T20:15:40.200
Reputation: 113
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That seems odd, ICMP is disabled by default on the firewall to your ec2 instance. Try running this command on your ec2 instance's firewall security group:
ec2-authorize default -P icmp -t -1:-1 -s 0.0.0.0/0
See the EC2 FAQ Article regarding ICMP.
John T
Posted 2011-10-27T20:15:40.200
Reputation: 149 037
Also, I was using some kind of "internal" up address, as opposed to an external ip address. I don't understand why it wasn't an issue on the posix machines. – maximus – 2011-10-27T22:32:39.730
@maximus you're most welcome – John T – 2011-10-28T15:52:30.307
1When you try to ping, does it timeout? – uSlackr – 2011-10-27T20:28:11.870
yes it times out – maximus – 2011-10-27T20:44:52.923
1Is the IP sensitive, can you give it to us to try? – Paul – 2011-10-27T20:50:23.557
1what happens when you do a tracert on the IP? – Garrett – 2011-10-27T20:55:21.957
1Have you tried to use the "tracert" to trace the route to see where it's exactly timing out? – Joe S – 2011-10-27T22:12:19.210
Yes, I doesn't find anything at all – maximus – 2011-10-27T22:30:47.597