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Re: Computer question!
 

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

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.

Re: Computer question!
 

Faster than me lol

Re: Computer question!
 

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.

Re: Computer question!
 

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

Re: Computer question!
 

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

Re: Computer question!
 

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.

Re: Computer question!
 

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

Re: Computer question!
 

You prob blocked DNS responses then.