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I have a Windows VM on Azure and I don't understand why my ping times out.
I found a probable reason: on Azure portal I see public IP "40.127.163.20", but inside VM when I do ipconfig I see different IP that is strange.
Do you have any ideas?
ICMP protocol is not permitted through the Azure load balancer (inbound or outbound) which means that you can't do a simple ping to your VM. There is a : user voice request for this to be enabled here.
This blog here describes how you can use a port ping as an alternative.
There is some documentation on how to set up an Instance Level IP, which would circumnavigate the load balancer and give direct communication to the Virtual Machine, but I haven't tried this approach (I'm giving it a go right now, will report back)
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I'm sitting behind a proxy server, which gives me a configuration and routing rules via a .pac file (configured in the global internet settings in windows).
There are some URLs that should not be routed to the proxy server, as they are local addresses in our company. There is also a rule to not route localhost. For development purposes, I have given my machine an alias hostname: 127.0.0.1 dev.company.com
Accessing the URL dev.company.com:8080/index.html with Internet Explorer or Firefox gives me the expected result, however, the same URL in Chrome gets routed to the proxy server, which (of course) is unable to find it.
You could run: chrome://net-internals/proxyservice.init_log#proxy in your chrome browser and re-apply your settings.
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Why its necessary to set a static ip and then put in the /etc/hosts file
put the static ip and host to install hadoop? like this:
127..0.1 localhost
::1 localhost
192.10.1.20 hadoophost
In general...
Why its necessary to set a static ip
Because if the machine reboots and acquires a new IP address via DHCP, then your cluster completely breaks.
Other than that, adding an entry to /etc/hosts allows the computer to reference other computers and itself by hostname rather than IP address.
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Closed 8 years ago.
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I have a web side hosted on IIS, windows 8 os. I can access from my browser to this page via these urls:
localhost/mysamplesite
192.168.21.10/mysamplesite
I can ping my ip address like this: ping 192.168.21.10
But I can not ping to 192.168.21.10/mysamplesite this command gives error: ping request could not find host 192.168.21.10/mysamplesite
Actually have another machine (192.168.21.45) that installed apache banchmark on. I want to test request from apache banchmark to my site. So I can not send request.
ab -n 1 -c -1 192.168.21.10/mysamplesite
This does not work.
As arco444 mentioned, you can't ping a website, just a computer itself.
ping is the first thing to try when troubleshooting network connectivity problems
ping 192.168.21.10
from the remove machine.
You can also try PsPing to test for connectivity to a certain port:
psping 192.168.21.10:80
however you can not use this to check for a particular resource on your web site.
Instead you have to use a tool to test for http traffic, Apache Benchmark is one of them, depending on the OS on the remote machine, there are many other tools.
If ping works, check the firewall settings on your Windows 8 machine.
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Im trying to use a proxy with firefox, but the issue is that some sites are getting my real ip.
-If I enter to http://www.showmemyip.com it shows me the proxy ip.
-If I enter to http://www.whatismyip.com it shows me the proxy ip + "No proxy detected"
-If I enter to http://whatismyipaddress.com/proxy-check it shows me the proxy ip + "Proxy server not detected." + everything on false (green)
How can it be possible that they are detecting my ip? I saw that flash doesnt use the proxy configured on firefox... but the pages that Im trying to access dont have any flash script.
Is there any way of being 100% that they would only see the proxy ip and not mine?
Thanks!
That because the proxy pass your ip to server in http header(detail), you should setup the proxy to anonymously.
There are some Java and Flash hacks to find out the visitor's real IP even behind a proxy server. As for Java you can turn it off forever. For Flash install some browser extension to be able to block it when you need. Use this site for tests: http://mylocation.org
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Closed 9 years ago.
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I have two EC2 instances behind a Amazon load balancer. The load balancer routes requests on port 80 to the instance port 80.
How do I make sure the instance services are accessible only through the loadbalancer DNS and not accessible directly through the instance public DNS ?
thanks
Santhosh
That should be possible via appropriately setting the security groups for the EC2 instances, so that only connections from the Load Balancer are allowed.