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 tendencies 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 tendency. The packets are then sent against the target machine to either penetrate its firewall rules or find bugs in the IP stack. ISIC also contains a utility generate raw ether frames to examine hardware implementations. Other novel uses people have found for ISIC include IDS testing, stack fingerprinting, breaking sniffers and barraging the IRC kiddie.
e198c4061798d47fd4b00f9f90cd56336145e551ca763571c2023624dfa7bc5fbland.c exploits a bug in Guantlet 5.0 which causes the firewall to hang when an invalid ICMP packet is sent to a machine which is forwarded through the firewall.
09a5c8c71232fd537a6add6c81e27e690a0d7c6674e8c844053c608c81e84ec0ISIC - 0.05 (IP Stack Integrity Check). Crafts random packets and launches them. Can fix or randomize source/dest IP's and Ports. You can specify the percentage of packets to fragment, to have IP options, to have bad IP versions.... Just about every field can be automagically twiddled. It contains distinct programs for TCP, UDP, ICMP, IP with a randomized protocol field and a program for randomized raw ethernet frames. Compiles and should work using Libnet under OpenBSD, Solaris, Linux and FreeBSD.
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