User manual

99
3‐7‐3DoS
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DenialofService(DoS)isacommonattackmeasure,bytransmittingagreatamountofdata
orrequesttoyourInternetIPaddressandserver,theInternetconnectionwillbecomevery
slow,andservermaystoprespondingbecauseitisnotcapabletohandletoomuchtraffics.
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Thisrouterhasabuilt‐inDoSattackpreventionmechanism;whenyouactivateit,the
routerwillstoptheDoSattackforyou:
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HerelistsfourkindsofDoSattacks,pleaseselectthetypeofDoSattackyouwishthis
broadbandroutertoprotect,andyoucanselectmultipletypesofattacks.
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ThedescriptionsofeveryDoSattackislistedbe low:
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ItemName Description
PingofDeath PingofDeathisaspecialpacket,anditwill
causecertaincomputertostopresponding.
Checkthisboxandtherouterwillfilterth is 
kindofpacketout.
DiscardPingFrom
WAN
Pingisacommonandusefultooltoknow
theconnectionstatusofaspecifiedremote
networkdevice,butsomemaliciousintruder
willtrytofillyournetworkbandwidthwitha
lotofPINGrequestdatapacket,tomakeyour
internetconnectionbecomeveryslow,even
unusable.
Checkthisboxandtherouterwill
ignoreallinboundPINGrequest,butwhenyou
activatethisfunction,youwillnotbeableto
pingyourownrouterfrominternet,too.
PortScan Somemaliciousintruderwilltrytousea‘port
scanner’toknowhowmanyportsofyour
InternetIPaddressareopen,andtheycan
collectalotofvaluableinfor mationbydoing