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Ping Command


BarCa
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:huh:

PING PROBS

some of the ips which i ping shows

request timed out.

and then 100% loss

even if the host is present(i can gurantee coz i was chatting to him in ipmsg)

can u recommend some modification in the dos command for more powerful ping

or any other recommendation?????

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:huh:

PING PROBS

some of the ips which i ping shows

request timed out.

and then 100% loss

even if the host is present(i can gurantee coz i was chatting to him in ipmsg)

can u recommend some modification in the dos command for more powerful ping

or any other recommendation?????

More powerful?

ping -l 65500

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Possibly behind a router/firewall that is dropping the ICMP echo packets rather than responding to them?

You could try nmap with the -P0 switch and see if that comes back with anything, failing that you could also add the TCP ACK option on port 80 (-PT80) and see if you get a response that way - that will only tell you that the host is up, something that you say you already know.

Be wary though. You could always be scanning some proxy that they have sat between themselves and you. Also, ensure that you have their permission before launching random scans against their boxes - you never know if you're going to crash a service that they have running, or possibly fall foul of the legal system in your country.

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Not all IP addresses will respond to ping. If a firewall or router drops (ignores, blocks) certain kinds of ICMP traffic, for example, it won't work.

EDIT: NM, loftrat covered it.

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What are you trying to accomplish with a ping though? All it would do is tell you if he was online, and thats only if a firewall didn't block the request. Unless you have 1,000's of machines to direct a ping at him(DoS), what is the point?

I'm curuious. You already confirmed he was online by chatting with him, so why the ping?

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