1. Blocking ICMP packets may help prevent denial-of-service attacks.
2. A smurf attack involves two systems: the attacker and the victim.
3. The ping –l option changes the size of the packet you can send.
4. A denial-of-service attack is one of the most common attacks on a system.
5. SYN cookies are a form of attack.
6. Stack tweaking is a method to alter the TCP stack so that a timeout takes less time when a SYN connection is left incomplete.
7. A teardrop attack involves sending a forged packet to the victim.
8. An echo-chargen attack occurs when the attacker sends a forged packet with the same source IP address and destination IP address as the target’s IP address.
9. The group Anonymous is a supporter of Wikileaks founder Julian Assange and launched multiple distributed denial-of-service attacks on various financial companies.
10. A firewall can be configured to disallow certain types of incoming traffic that may be attacking.