<?xml version="1.0"?><ownershipDocument><schemaVersion>X0201</schemaVersion>    <documentType>4</documentType><periodOfReport>2003-12-08</periodOfReport><notSubjectToSection16>0</notSubjectToSection16><issuer><issuerCik>0001088454</issuerCik><issuerName>NETSCREEN TECHNOLOGIES INC</issuerName>        <issuerTradingSymbol>NSCN</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId><rptOwnerCik>0001270521</rptOwnerCik><rptOwnerName>KOLLURI KRISHNA KITTU</rptOwnerName></reportingOwnerId><reportingOwnerAddress><rptOwnerStreet1>C/O NETSCREEN TECHNOLOGIES, INC.</rptOwnerStreet1><rptOwnerStreet2>805 11TH AVE. BUILDING 3</rptOwnerStreet2><rptOwnerCity>SUNNYVALE</rptOwnerCity><rptOwnerState>CA</rptOwnerState><rptOwnerZipCode>94089</rptOwnerZipCode><rptOwnerStateDescription></rptOwnerStateDescription></reportingOwnerAddress><reportingOwnerRelationship><isDirector>0</isDirector><isOfficer>1</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther><officerTitle>GM Secure Access Products</officerTitle></reportingOwnerRelationship></reportingOwner><nonDerivativeTable><nonDerivativeTransaction><securityTitle><value>Common Stock</value></securityTitle><transactionDate><value>2003-12-08</value></transactionDate><deemedExecutionDate></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>S</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>10000.0000</value></transactionShares><transactionPricePerShare><value>25.0375</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>295138.0000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></nonDerivativeTransaction><nonDerivativeTransaction><securityTitle><value>Common Stock</value></securityTitle><transactionDate><value>2003-12-09</value></transactionDate><deemedExecutionDate></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>S</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>60900.0000</value></transactionShares><transactionPricePerShare><value>23.9723</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>234238.0000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></nonDerivativeTransaction><nonDerivativeHolding><securityTitle><value>Common Stock</value></securityTitle><postTransactionAmounts><sharesOwnedFollowingTransaction><value>30250.0000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>I</value></directOrIndirectOwnership><natureOfOwnership><value>By Kolluri Living Trust</value></natureOfOwnership></ownershipNature></nonDerivativeHolding></nonDerivativeTable><footnotes></footnotes><remarks></remarks><ownerSignature><signatureName>/s/ Tom Tovar, Attorney-in-Fact for Krishna Kolluri</signatureName><signatureDate>2003-12-09</signatureDate></ownerSignature></ownershipDocument>

