Proof of concept: an unprivileged ping using UDP, it can ping hosts when ICMP is being filtered but UDP isn't.
A design for a T shirt (in Postscript) promoting side effect free programming. It is based on an icon that I saw on the Hugs home page.
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Page created: Apr 19, 1998 -
last update: Nov 26, 2002 -
version 2.1
Jörg Czeranski (Impressum)