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Common brute force attacks include the Smurf attack and the User Datagram Protocol (UDP) flood. When you're Smurfed, Internet Control Message Protocol (ICMP) echo request packets, a particular type of ping packet, overwhelm your router. Making matters worse, each packet's destination IP address is spoofed to be your local broadcast address. You're probably already getting the picture. Once your router also gets into the act of broadcasting ICMP packets, it won't be long before your internal network is frozen. Business - All business/finance/loan/mortgage related link can be found here Computers - All computer hardware/software/peripheral related link can be found here Internet - All webhosting/webdesign/internet marketing related link can be found here Software - All software related link can be found here Web Design - All web design/development related link can be found here Web Hosting - All web hosting related link can be found here Web Promotion - All search engine optimization/internet marketing related link can be found here Web Resources - All other web related link can be found here Recreation - All travel/hotel/cruise related link can be found here Casino - All online gambling/poker/blackjack/roulette related link can be found here Health - All online pharmacy/hospital/health related link can be found here Shopping - All online shopping/gift related link can be found here Miscellaneous - All other links can be found here
A UDP flood works by someone spoofing a call from one of your system's UDP chargen programs. This test program generates semi-random characters for received packets with another of your network's UDP echo service. Once these characters start being reflected, your bandwidth quickly vaporizes.Fortunately, for these two anyway, you can usually block them. With Smurfing, just setting your router to ignore broadcast addressing and setting your firewall to ignore ICMP requests should be all you need. |
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