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  <element name="CommonStockValueAuthorized" id="allt_CommonStockValueAuthorized" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit"/>
  <element name="ConcentrationRiskThresholdPercentage" id="allt_ConcentrationRiskThresholdPercentage" type="dtr-types:percentItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="ContingentConsiderationPaymentsCapBasedOnAchievementOfCertainThresholdsOfRevenues" id="allt_ContingentConsiderationPaymentsCapBasedOnAchievementOfCertainThresholdsOfRevenues" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit"/>
  <element name="ConversionGainsAndLossesOnRevaluationOfAssetsAndLiabilities" id="allt_ConversionGainsAndLossesOnRevaluationOfAssetsAndLiabilities" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit"/>
  <element name="ConversionPriceIncreaseDecreases" id="allt_ConversionPriceIncreaseDecreases" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="CostOfGoodsSoldDeferredRevenue" id="allt_CostOfGoodsSoldDeferredRevenue" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit"/>
  <element name="DebtConversionDescriptionChangeOfControl" id="allt_DebtConversionDescriptionChangeOfControl" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="DebtInstrumentAdditionalFaceAmount" id="allt_DebtInstrumentAdditionalFaceAmount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit"/>
  <element name="DecreaseIncreaseInRestrictedDepositsInvestingActivities" id="allt_DecreaseIncreaseInRestrictedDepositsInvestingActivities" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit"/>
  <element name="DeferredTaxAssetsTaxDeferredExpenseOperatingLeaseLiabilities" id="allt_DeferredTaxAssetsTaxDeferredExpenseOperatingLeaseLiabilities" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit"/>
  <element name="DeferredTaxAssetsTaxDeferredExpensePrepaidAndWithholdingTaxes" id="allt_DeferredTaxAssetsTaxDeferredExpensePrepaidAndWithholdingTaxes" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit"/>
  <element name="DeferredTaxAssetsWroteOffPrepaidAndWithholdingTaxes" id="allt_DeferredTaxAssetsWroteOffPrepaidAndWithholdingTaxes" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit"/>
  <element name="DerivativeInstrumentsScheduleOfFairValueOfOutstandingNonDesignatedForeignExchangeContracts" id="allt_DerivativeInstrumentsScheduleOfFairValueOfOutstandingNonDesignatedForeignExchangeContracts" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="DevelopmentZoneMember" id="allt_DevelopmentZoneMember" type="dtr-types:domainItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="DividendWithholdingTaxRate" id="allt_DividendWithholdingTaxRate" type="dtr-types:percentItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="DocumentAndEntityInformationAbstract" id="allt_DocumentAndEntityInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="EarnOutLiabilityAdjustmentsDueToExchangeRatesAdjustmentDueToChangeInForecastAndTimeValueOfEarnOutConsideration" id="allt_EarnOutLiabilityAdjustmentsDueToExchangeRatesAdjustmentDueToChangeInForecastAndTimeValueOfEarnOutConsideration" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit"/>
  <element name="EarnOutLiabilityKeepers" id="allt_EarnOutLiabilityKeepers" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit"/>
  <element name="EffectiveIncomeTaxRateReconciliationChangeInExpenseAssociatedWithTaxPositionsForCurrentYearForeignAmount" id="allt_EffectiveIncomeTaxRateReconciliationChangeInExpenseAssociatedWithTaxPositionsForCurrentYearForeignAmount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit"/>
  <element name="EffectiveIncomeTaxRateReconciliationChangeInExpenseAssociatedWithTaxPositionsForCurrentYearStateAndLocalAmount" id="allt_EffectiveIncomeTaxRateReconciliationChangeInExpenseAssociatedWithTaxPositionsForCurrentYearStateAndLocalAmount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit"/>
  <element name="EffectiveIncomeTaxRateReconciliationTaxesInRespectOfPreviousYearsForeignAmount" id="allt_EffectiveIncomeTaxRateReconciliationTaxesInRespectOfPreviousYearsForeignAmount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit"/>
  <element name="EffectiveIncomeTaxRateReconciliationTaxesInRespectOfPreviousYearsStateAndLocalAmount" id="allt_EffectiveIncomeTaxRateReconciliationTaxesInRespectOfPreviousYearsStateAndLocalAmount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit"/>
  <element name="EffectiveIncomeTaxRateReconciliationWriteOffOfPrepaidAndWithholdingTaxesForeignAmount" id="allt_EffectiveIncomeTaxRateReconciliationWriteOffOfPrepaidAndWithholdingTaxesForeignAmount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit"/>
  <element name="EffectiveIncomeTaxRateReconciliationWriteOffOfPrepaidAndWithholdingTaxesStateAndLocalAmount" id="allt_EffectiveIncomeTaxRateReconciliationWriteOffOfPrepaidAndWithholdingTaxesStateAndLocalAmount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit"/>
  <element name="EquipmentAtCustomerSiteMember" id="allt_EquipmentAtCustomerSiteMember" type="dtr-types:domainItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="EstimatedCreditLossAllowance" id="allt_EstimatedCreditLossAllowance" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit"/>
  <element name="ExerciseOfShareOptionsAndRestrictedShareUnitsShares" id="allt_ExerciseOfShareOptionsAndRestrictedShareUnitsShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="ExerciseOfShareOptionsAndRestrictedShareUnitsValue" id="allt_ExerciseOfShareOptionsAndRestrictedShareUnitsValue" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit"/>
  <element name="ExpenseDeductiblePeriod" id="allt_ExpenseDeductiblePeriod" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearTwo" id="allt_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearTwo" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit"/>
  <element name="FirstExtensionMember" id="allt_FirstExtensionMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="ForeignCounterpartyMember" id="allt_ForeignCounterpartyMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="GalilSoftwareMember" id="allt_GalilSoftwareMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="GovernmentAuthorities" id="allt_GovernmentAuthorities" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit"/>
  <element name="GrantsParticipationsExcludedFromResearchAndDevelopmentCosts" id="allt_GrantsParticipationsExcludedFromResearchAndDevelopmentCosts" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit"/>
  <element name="GuaranteesInFavorOfLease" id="allt_GuaranteesInFavorOfLease" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit"/>
  <element name="HoldbackAndContingentEarnout" id="allt_HoldbackAndContingentEarnout" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit"/>
  <element name="HoldbackExpensesCurrent" id="allt_HoldbackExpensesCurrent" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit"/>
  <element name="ImpairmentOfLongLivedAssetsAndIntangibleAssetsSubjectToAmortization" id="allt_ImpairmentOfLongLivedAssetsAndIntangibleAssetsSubjectToAmortization" type="dtr-types:textBlockItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="IncomeTaxAreaAxis" id="allt_IncomeTaxAreaAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" nillable="true"/>
  <element name="IncomeTaxAreaDomain" id="allt_IncomeTaxAreaDomain" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="IncomeTaxReconciliationChangeInDeferredTaxAssetsChangesInTaxRatesAndDifferentBasisOfMeasurement" id="allt_IncomeTaxReconciliationChangeInDeferredTaxAssetsChangesInTaxRatesAndDifferentBasisOfMeasurement" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit"/>
  <element name="IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowanceAsResultOfTaxRateChange" id="allt_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowanceAsResultOfTaxRateChange" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit"/>
  <element name="IncomeTaxReconciliationForeignTaxRatesDifferencesRelatedToSubsidiaries" id="allt_IncomeTaxReconciliationForeignTaxRatesDifferencesRelatedToSubsidiaries" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit"/>
  <element name="IncreaseDecreaseInAccruedInterestAndAmortizationOfPremiumOnMarketableSecurities" id="allt_IncreaseDecreaseInAccruedInterestAndAmortizationOfPremiumOnMarketableSecurities" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit"/>
  <element name="InitialBeneficialOwnershipLimitationPercentage" id="allt_InitialBeneficialOwnershipLimitationPercentage" type="dtr-types:percentItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="InitialDebtConversionRate" id="allt_InitialDebtConversionRate" type="dtr-types:perShareItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="IsraelInnovationAuthorityGrantMember" id="allt_IsraelInnovationAuthorityGrantMember" type="dtr-types:domainItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="KeepersChildSafetyLtdMember" id="allt_KeepersChildSafetyLtdMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="LeasePeriod" id="allt_LeasePeriod" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="LynrockLakeMasterFundLpMember" id="allt_LynrockLakeMasterFundLpMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="MajorCustomerOneMember" id="allt_MajorCustomerOneMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="MajorCustomerTwoMember" id="allt_MajorCustomerTwoMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="MiddleEastAndAfricaMember" id="allt_MiddleEastAndAfricaMember" type="dtr-types:domainItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="MonthlyRentalExpenses" id="allt_MonthlyRentalExpenses" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit"/>
  <element name="NetAssetsFairValueDisclosure" id="allt_NetAssetsFairValueDisclosure" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit"/>
  <element name="NetonomyLTDMember" id="allt_NetonomyLTDMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="NetonomyMember" id="allt_NetonomyMember" type="dtr-types:domainItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="NetOperatingLossesLimitPercentageOfTaxableIncome" id="allt_NetOperatingLossesLimitPercentageOfTaxableIncome" type="dtr-types:percentItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="NetOperatingLossesLimitPercentageOfTotalAccumulatedLosses" id="allt_NetOperatingLossesLimitPercentageOfTotalAccumulatedLosses" type="dtr-types:percentItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="NetworkIntelligenceSolutionsMember" id="allt_NetworkIntelligenceSolutionsMember" type="dtr-types:domainItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="NewAccountingStandardEffect" id="allt_NewAccountingStandardEffect" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit"/>
  <element name="OperatingLeasesRentExpensePercentageOfExpensesIncurredPlusManagementFees" id="allt_OperatingLeasesRentExpensePercentageOfExpensesIncurredPlusManagementFees" type="dtr-types:percentItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="OptenetMember" id="allt_OptenetMember" type="dtr-types:domainItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="OptionsPriceRangeFiveMember" id="allt_OptionsPriceRangeFiveMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="OptionsPriceRangeFourMember" id="allt_OptionsPriceRangeFourMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="OptionsPriceRangeOneMember" id="allt_OptionsPriceRangeOneMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="OptionsPriceRangeThreeMember" id="allt_OptionsPriceRangeThreeMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="OptionsPriceRangeTwoMember" id="allt_OptionsPriceRangeTwoMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="OtherAccountsReceivableAndPrepaidExpensesTableTextBlock" id="allt_OtherAccountsReceivableAndPrepaidExpensesTableTextBlock" type="dtr-types:textBlockItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="OtherCountriesMember" id="allt_OtherCountriesMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="OtherExpensesAndExchangeRateDifferences" id="allt_OtherExpensesAndExchangeRateDifferences" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit"/>
  <element name="OtherPayablesAndAccruedExpensesDetailsAbstract" id="allt_OtherPayablesAndAccruedExpensesDetailsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="OtherPayablesAndAccruedLiabilitiesCurrent" id="allt_OtherPayablesAndAccruedLiabilitiesCurrent" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit"/>
  <element name="OutsideDevelopmentZoneMember" id="allt_OutsideDevelopmentZoneMember" type="dtr-types:domainItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="PatentUseRightPeriod" id="allt_PatentUseRightPeriod" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="PercentageOfRepurchasePriceEqualToPrincipalAmountOfConvertibleNotes" id="allt_PercentageOfRepurchasePriceEqualToPrincipalAmountOfConvertibleNotes" type="dtr-types:percentItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="PreferredEnterpriseMember" id="allt_PreferredEnterpriseMember" type="dtr-types:domainItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="PrepaymentToOem" id="allt_PrepaymentToOem" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit"/>
  <element name="PriorPeriodOtherReceivablesAndPrepaidExpensesReclassifiedToNoncurrentAssets" id="allt_PriorPeriodOtherReceivablesAndPrepaidExpensesReclassifiedToNoncurrentAssets" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit"/>
  <element name="ProceedsFromPastDueReceivables" id="allt_ProceedsFromPastDueReceivables" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit"/>
  <element name="PropertyAndEquipmentPercentageOfDepreciationAtAnnualRateTableTextBlock" id="allt_PropertyAndEquipmentPercentageOfDepreciationAtAnnualRateTableTextBlock" type="dtr-types:textBlockItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="PropertyPlantAndEquipmentEstimatedUsefulLivesAnnualRate" id="allt_PropertyPlantAndEquipmentEstimatedUsefulLivesAnnualRate" type="dtr-types:percentItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="ProvisionForReturns" id="allt_ProvisionForReturns" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit"/>
  <element name="RemainingPerformanceObligations" id="allt_RemainingPerformanceObligations" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit"/>
  <element name="RemainingPerformanceObligationsShortTerm" id="allt_RemainingPerformanceObligationsShortTerm" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit"/>
  <element name="RestrictedHoldbackAmount" id="allt_RestrictedHoldbackAmount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit"/>
  <element name="RoyaltyBearingGrantsPolicyTextBlock" id="allt_RoyaltyBearingGrantsPolicyTextBlock" type="dtr-types:textBlockItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="RoyaltyExpensePercentageOfGrants" id="allt_RoyaltyExpensePercentageOfGrants" type="dtr-types:percentItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="RoyaltyExpensePercentageOfNetSales" id="allt_RoyaltyExpensePercentageOfNetSales" type="dtr-types:percentItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="ScheduleOfWeightedAverageRemainingLeaseTermAndDiscountRate" id="allt_ScheduleOfWeightedAverageRemainingLeaseTermAndDiscountRate" type="dtr-types:textBlockItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="SecondExtensionMember" id="allt_SecondExtensionMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="SecurityAsServiceMember" id="allt_SecurityAsServiceMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="SecuritySolutionsMember" id="allt_SecuritySolutionsMember" type="dtr-types:domainItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="SeverancePayFund" id="allt_SeverancePayFund" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit"/>
  <element name="SeverancePayPolicyTextBlock" id="allt_SeverancePayPolicyTextBlock" type="dtr-types:textBlockItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsSuboptimalExerciseMultiple" id="allt_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsSuboptimalExerciseMultiple" type="xbrli:decimalItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsSuboptimalExerciseMultipleMaximum" id="allt_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsSuboptimalExerciseMultipleMaximum" type="xbrli:decimalItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsSuboptimalExerciseMultipleMinimum" id="allt_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsSuboptimalExerciseMultipleMinimum" type="xbrli:decimalItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="ShortTermBankDepositsHedgingTransactions" id="allt_ShortTermBankDepositsHedgingTransactions" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit"/>
  <element name="ShortTermBankDepositsPolicyTextBlock" id="allt_ShortTermBankDepositsPolicyTextBlock" type="dtr-types:textBlockItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="SpainTaxAuthoritiesGrantMember" id="allt_SpainTaxAuthoritiesGrantMember" type="dtr-types:domainItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="SpecialTechnologicalPreferredEnterpriseMember" id="allt_SpecialTechnologicalPreferredEnterpriseMember" type="dtr-types:domainItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="TaxAssetsValuationAllowanceAsResultOfTaxRateOfPreviousYears" id="allt_TaxAssetsValuationAllowanceAsResultOfTaxRateOfPreviousYears" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit"/>
  <element name="TaxBenefitPeriod" id="allt_TaxBenefitPeriod" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="TaxBenefitsDescription" id="allt_TaxBenefitsDescription" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="TaxesOnIncomeLineItems" id="allt_TaxesOnIncomeLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="TaxesOnIncomeTable" id="allt_TaxesOnIncomeTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" nillable="true"/>
  <element name="TaxExemptPeriod" id="allt_TaxExemptPeriod" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="TechnologyTwoMember" id="allt_TechnologyTwoMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="TermOfDebtIssuanceCostsAmortization" id="allt_TermOfDebtIssuanceCostsAmortization" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="TotalIssuanceCosts" id="allt_TotalIssuanceCosts" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit"/>
  <element name="TreasuryStockPolicyTextBlock" id="allt_TreasuryStockPolicyTextBlock" type="dtr-types:textBlockItemType" abstract="false" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="TwoThousandSixStockOptionPlanMember" id="allt_TwoThousandSixStockOptionPlanMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
  <element name="TwoThousandSixteenPlanMember" id="allt_TwoThousandSixteenPlanMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" nillable="true"/>
</schema>
