•http://www.quadrunner.com/~chuegen/smurf/ contains detailed information about the “Smurf” and “Fraggle” attacks.
	•http://ds.internic.net/rfc/rfc2267.txt is a recently-published informational RFC describing implementation of filters to protect against origination and reception of some spoofed packets.
	•http://www.security.mci.net/dostracker/ contains information about the MCI-developed DoSTracker tool designed to automate the process of tracking spoofed packets through a network using Cisco routers.
	•Other DoS attack information:
		•“Defining Strategies to Protect Against TCP SYN Denial of Service Attacks”
			•http://www.cisco.com/warp/public/707/4.html
		•“Defining Strategies to Protect Against UDP Diagnostic Port Denial of Service Attacks”
			•http://www.cisco.com/warp/public/707/3.html