Denial of Service Attacks
An attack where a system is rendered unusable or is significantly slowed down for legitimate users. This is done by overloading resources so that no that legitimate users cannot access
- Crashing the system
- Flooding the system
- Distributed Denial of Service Attachs
- Types of Denial of Service Attacks
- Ping of Death - sends a very large ping packet to a host machine
- SSPing - sends a series of higly fragmented, oversized ICMP data packets
- Land Exploit - sends a TCP SYN packets where the target and source address and the port numbers are the same
- Smurf - sends forged ICMP packets to a broadcast address (fraggle - sends UDP echo packets)
- SYN Flood - opens a large number of half-open TCP/IP connections
- CPU Hog - causes NT machines to crash by using up all of the resources (sets priorities to the highest value)
- Win Nuke - sends out of band data to a Windows machine on port 139
- RPC Locator - sends data to port 135 causing 100% CPU utilization
- Jolt / Jolt2 - sends large number of identical fragmented IP packets
- Bubonic - randomly sends TCP packets with random settings increasing the load on the machine eventually crashing it
- Tools for running DOS and DDOS attackes
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