In most causes it is therefore very safe to launch a denial of service attack that makes use of multiple W3 clients, typical lynx clients. And the attack can in those causes get the server to loop. An attack using this script might eat some bandwidth, but it is nothing compared to the finger method or most other methods. This is a simple high risk vulnerability that should be checked and if present fixed. The solution is to install the proper patch.
Some systems disable an account after N number of bad logins, or waits N seconds.
You can use this feature to lock out specific users from the system. The solution is to install the proper patch. The solutions is to set the number to something reasonable. Paragon is Intels supercomputer platform built for high performance scientific and technical computing. An ICMP redirect tells the system to override routing tables.