Windows 95, Windows 98, Windows 2000, Windows NT 4.0, and Terminal Server systems allow a remote attacker to cause a denial of service by sending a large number of identical fragmented IP packets, aka jolt2 or the "IP Fragment Reassembly" vulnerability.
BeOS 5.0 allows remote attackers to cause a denial of service via fragmented TCP packets.
BeOS allows remote attackers to cause a denial of service via malformed packets whose length field is less than the length of the headers.
BeOS 4.5 and 5.0 allow local users to cause a denial of service via malformed direct system calls using interrupt 37.