Computer question! - SV650.org

12-01-10, 11:27 PM

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Spiderman · 12-01-10, 11:31 PM

you know how a radar "pings" back things it finds? Well a computer ping is a similar idea.

5hort5 · 12-01-10, 11:33 PM

Think of a submarine in a war film, they send out pings to locate things, a ping in computer terms is much the same, your computer sends a ping to another computer to see if it is there and it expects an echo back. some program is probably using this method to check for connection to the net so if it didn't receive an echo it things it's dead. blocking pings on the firewall would have that result.

5hort5 · 12-01-10, 11:33 PM

Faster than me lol

Spiderman · 12-01-10, 11:40 PM

Quote:

Originally Posted by ArtyLady

So when I go on any website it sends a Ping first?

I think so. Unless you been on it before and you have cookies from it.

But some things ping you too, outside of your control of course.

TSM · 12-01-10, 11:51 PM

Quote:

Originally Posted by Spiderman

I think so. Unless you been on it before and you have cookies from it.

But some things ping you too, outside of your control of course.

No a ping is not done when you connect to a device.

Many devices do not respond to pings for security reasons etc.

Ping is a realy a diagnostic tool, like a 'hey are you alive...yes i am', it reports round trip times etc. so ping a computer in NY and it will report abt 90ms etcc round trip ie the time it takes for the ping to get to the computer and come back to you.

there are diffrent types of ping, TCP and ICMP
one is a guranteed ping test while the other is a best effort type
but even if you get no reply, does not mean the computer is off, it could just be set to not respond

Spiderman · 13-01-10, 12:01 AM

TSM knows waaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaay more about this stuff than me Lorna so whatever he says is right.

TSM · 13-01-10, 12:01 AM

Quote:

Originally Posted by ArtyLady

So it's not trying to hack into my computer then?

Its used as a scouting process for many virusus and trojans, check and see if computer is on, if ping is allowed then they go for a scan for services to exploit.
Its ok to block all incomming pings.

There are genuine uses for ping but not usualy unwanted.

TSM · 13-01-10, 12:02 AM

Quote:

Originally Posted by Spiderman

TSM knows waaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaay more about this stuff than me Lorna so whatever he says is right.

not always, sudoxe and others are better than me at this suff

TSM · 13-01-10, 12:12 AM

Quote:

Originally Posted by ArtyLady

Hi TSM I did block them and then I couldn't get on here

but they weren't from here that is the puzzling thing!

You prob blocked DNS responses then.

12-01-10, 11:27 PM	#1
ArtyLady Guest Posts: n/a	. . Last edited by ArtyLady; 26-07-11 at 05:41 PM.

12-01-10, 11:31 PM	#2
Spiderman Where the hell am I? Mega Poster Join Date: Dec 2004 Location: Swingin' thru the urban jungle Posts: 7,451	Re: Computer question! you know how a radar "pings" back things it finds? Well a computer ping is a similar idea. __________________ . "Computers are great! Not for communicating tho. They have one fundamental flaw ... they don't have eyebrows." AlpineCarStereo: you win ....... eeerrr ..... ummm ..... my undying support of you, the greatest Mod this forum has ever known. My Leige. davepreston: i bow to your modding godliness. vixis: He's this really cute Persian tea-boy, Im so not giving you his number :P

12-01-10, 11:33 PM	#3
5hort5 Member Join Date: May 2006 Location: Newcastle Posts: 872	Re: Computer question! Think of a submarine in a war film, they send out pings to locate things, a ping in computer terms is much the same, your computer sends a ping to another computer to see if it is there and it expects an echo back. some program is probably using this method to check for connection to the net so if it didn't receive an echo it things it's dead. blocking pings on the firewall would have that result.

12-01-10, 11:33 PM	#4
5hort5 Member Join Date: May 2006 Location: Newcastle Posts: 872	Re: Computer question! Faster than me lol

13-01-10, 12:01 AM	#7
Spiderman Where the hell am I? Mega Poster Join Date: Dec 2004 Location: Swingin' thru the urban jungle Posts: 7,451	Re: Computer question! TSM knows waaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaay more about this stuff than me Lorna so whatever he says is right. __________________ . "Computers are great! Not for communicating tho. They have one fundamental flaw ... they don't have eyebrows." AlpineCarStereo: you win ....... eeerrr ..... ummm ..... my undying support of you, the greatest Mod this forum has ever known. My Leige. davepreston: i bow to your modding godliness. vixis: He's this really cute Persian tea-boy, Im so not giving you his number :P

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