ISIC is a suite of utilities to exercise the stability of
an IP Stack and its component stacks (TCP, UDP, ICMP et.
al.) It generates piles of pseudo random packets of the
target protocol. The packets be given tendancies to conform
to. Ie 50% of the packets generated can have IP Options.
25% of the packets can be IP fragments... But the
percentages are arbitrary and most of the packet fields
have a configurable tendancy.
The packets are then sent against the target machine to
either penetrate its firewall rules or find bugs in the
ISIC also contains a utility generate raw ether frames to
examine hardware implementations.