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| + | == air jordans for cheap cheap jordans IP Insecurity Computerw == | ||
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| + | TCP IP ravaged the Arpanet. Of those that still exist today,<a href=" " target="_blank">cheap jordans free shipping< a>, the most common include: < p> | ||
| + | <p> 1. Smurf attacks: A denial-of-service attack named after the colorful cartoon characters, a smurf attack takes advantage of the ability in most servers to broadcast requests to many other machines at once. The attacker forges a legitimate IP address and then broadcasts requests for a reply to the address of the victim to all the servers on the network. Because the packets appear to be legitimate requests from a known address,air jordans for cheap, all systems in the amplifying network reply to that address, overwhelming the legitimate machine and causing denial of service. < p> | ||
| + | <p> 2. SYN Floods: denial-of-service attacks in which the attacker uses spoofed IP addresses to send multiple connection (SYN) requests to the target. The target system then sends acknowledgements and waits for replies. Because the forged IP addresses don't belong to any actual machine,<a href=" " target="_blank">wholesale cheap jordans< a>, there is no reply, leaving connections open and blocking legitimate traffic. < p> | ||
| + | <p> 3. Source route manipulation: a denial-of-service and data-hijacking attack in which an attacker manipulates routing table entries (usually at the border router) to redirect traffic intended for one site to a different one,<a href=" " target="_blank">air jordans for cheap< a>,cheap jordan shoes, where the information can be intercepted, or to nowhere. < p> | ||
| + | <p> <b>Blocking and Filtering< b> < p> | ||
| + | <p> Disabling "broadcast" at the border router can block Smurf attacks. Timing out incomplete SYN requests at intervals of three seconds or less usually wards off SYN floods. And IP route packet filtering can catch hijacking attempts. In fact,cheap jordans online,<a href=" " target="_blank">amass denver< a>, filtering is what TCP IP protections are all about, say IT professionals. < p> | ||
| + | <p> For example,amass denver, many victims of recent distributed denial-of-service attacks are now filtering traffic at<ul> | ||
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