ping flood ?

[DDR-PIII]

how high does the ping thing have to be set to be able to flood a computer ? cuz my gateway keeps on freezing up for a few secs.

[su root]

In linux, you have the command:

ping -f [ip_address]

you can only run it as root. It sends ping packets as fast as it can, we're talking 10,000/minute or so.

Depending on the computer, that won't do much damage to it. You can ping flood yourself (localhost) in linux, and still have most of your resources available, and only see a slight lag. If we are talking a P1, then yeah, it'll die trying to return all the packets, but P3ish should be almost uneffected by it.

[DDR-PIII]

its a celeron @670Mhz

[su root]

shouldn't have too much of a problem dealing with the ping packets. Will be a little laggy when you are being heavily flooded, but tolerable.

If you have a router, it will be taking all of the pings from the internet, and not your internal computers. (your internal computers can floodping eachother).

When floodpinging over the internet, however, it will use up the bandwidth more than it will the CPU power, not that the router has all that much...

[DDR-PIII]

hm... what if it were multiplue computers flodding one ?

[su root]

well, assuming they are all the same speed, then one computer ping-flooding will send as many packets as it can, and the recieving computer will recieve them, and then send the replys, there would be minimal packet loss.

If you add another pingflooder, then each flooder will only get about half of their packets back, the rest would be:
HUB: collided
Switch: dropped by switch if it runs out of buffer space for the reciever's port, or dropped due to full buffer of reciever's NIC.

Ideally, there should be an equalibrium when one computer is pingflooding another, that is, they are both sending and recieving as much as they can.

[emericanchaos]

why ping flood?

[su root]

It's like burning in your server's nic. If it's going to fail, it's going to show up while flooding.