System.DirectoryServices.Protocols 9.0.6

Prefix Reserved
.NET 8.0 This package targets .NET 8.0. The package is compatible with this framework or higher. .NET Standard 2.0 This package targets .NET Standard 2.0. The package is compatible with this framework or higher. .NET Framework 4.6.2 This package targets .NET Framework 4.6.2. The package is compatible with this framework or higher.
There is a newer prerelease version of this package available.
See the version list below for details. 
dotnet add package System.DirectoryServices.Protocols --version 9.0.6
                    


                    

                
NuGet\Install-Package System.DirectoryServices.Protocols -Version 9.0.6
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="System.DirectoryServices.Protocols" Version="9.0.6" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="System.DirectoryServices.Protocols" Version="9.0.6" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="System.DirectoryServices.Protocols" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add System.DirectoryServices.Protocols --version 9.0.6
                    


                    

                
#r "nuget: System.DirectoryServices.Protocols, 9.0.6"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#addin nuget:?package=System.DirectoryServices.Protocols&version=9.0.6
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=System.DirectoryServices.Protocols&version=9.0.6
                    


                            Install as a Cake Tool

About

System.DirectoryServices.Protocols provides a managed implementation of Lightweight Directory Access Protocol (LDAP) version 3 and Directory Services Markup Language (DSML) version 2.0 (V2) standards.

It primarily uses the LdapConnection type for interacting with LDAP servers, using system native libraries to establish TCP/IP or UDP LDAP connections. Supports both Windows and Unix, but certain features, such as setting client or server certificate options, are not available on Unix.

Key Features

  • Managed implementation of LDAP v3 and DSML V2 standards.

How to Use

Using the LdapConnection type, you can establish connections to LDAP servers and issue requests.

Here is a simple example:

using System.DirectoryServices.Protocols;

// Create a new LdapConnection instance using the server URL.
using (LdapConnection connection = new LdapConnection("ldap.example.com")) {

    // Some credentials
    connection.Credential = new NetworkCredential(dn, password);

    // Connect to the server
    connection.Bind();

    // Perform LDAP operations
}

Main Types

The main types provided by this library are:

  • System.DirectoryServices.Protocols.LdapConnection
  • System.DirectoryServices.Protocols.DirectoryAttribute
  • System.DirectoryServices.Protocols.DirectoryOperation
  • System.DirectoryServices.Protocols.DirectoryRequest
  • System.DirectoryServices.Protocols.DirectoryResponse

Additional Documentation

Feedback & Contributing

System.DirectoryServices.Protocols is released as open source under the MIT license. Bug reports and contributions are welcome at the GitHub repository.

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 is compatible.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 is compatible.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 was computed.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net461 was computed.  net462 is compatible.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (154)

Showing the top 5 NuGet packages that depend on System.DirectoryServices.Protocols:

Package Downloads
System.DirectoryServices.AccountManagement

Provides uniform access and manipulation of user, computer, and group security principals across the multiple principal stores: Active Directory Domain Services (AD DS), Active Directory Lightweight Directory Services (AD LDS), and Machine SAM (MSAM).
Oracle.ManagedDataAccess.Core

Oracle Data Provider for .NET (ODP.NET) Core is a multi-platform ADO.NET driver that provides fast data access from Microsoft .NET (Core) clients to Oracle databases. ODP.NET Core consists of a single 100% managed code dynamic-link library.
Microsoft.Windows.Compatibility

This Windows Compatibility Pack provides access to APIs that were previously available only for .NET Framework. It can be used from both .NET as well as .NET Standard.
Microsoft.AspNetCore.Authentication.Negotiate

ASP.NET Core authentication handler used to authenticate requests using Negotiate, Kerberos, or NTLM. This package was built from the source code at https://github.com/dotnet/dotnet/tree/ddf39a1b4690fbe23aea79c78da67004a5c31094
CoreWCF.Primitives

CoreWCF is a port of the service side of Windows Communication Foundation (WCF) to .NET Core. The goal of this project is to enable existing WCF services to move to .NET Core.

GitHub repositories (15)

Showing the top 15 popular GitHub repositories that depend on System.DirectoryServices.Protocols:

Repository Stars
aspnetboilerplate/aspnetboilerplate
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dotnetcore/osharp
OSharp是一个基于.Net6.0的快速开发框架，框架对 AspNetCore 的配置、依赖注入、日志、缓存、实体框架、Mvc(WebApi)、身份认证、功能权限、数据权限等模块进行更高一级的自动化封装，并规范了一套业务实现的代码结构与操作流程，使 .Net 框架更易于应用到实际项目开发中。
Kevin-Robertson/Inveigh
.NET IPv4/IPv6 machine-in-the-middle tool for penetration testers
CoreWCF/CoreWCF
Main repository for the Core WCF project
ariacom/Seal-Report
Database Reporting Tool and Tasks (.Net)
simpleidserver/SimpleIdServer
OpenID, OAuth 2.0, SCIM2.0, UMA2.0, FAPI, CIBA & OPENBANKING Framework for ASP.NET Core
dotnet/dotnet
Home of .NET's Virtual Monolithic Repository which includes all the code needed to build the .NET SDK.
CICADA8-Research/RemoteKrbRelay
Remote Kerberos Relay made easy! Advanced Kerberos Relay Framework
microsoft/WindowsProtocolTestSuites
⭐⭐ Join us at the SNIA SDC SMB3 IO Lab (September 15-18, 2025)
DataDog/dd-trace-dotnet
.NET Client Library for Datadog APM
Syslifters/offsec-tools
Compiled tools for internal assessments
RapidScada/scada-v6
Contains Rapid SCADA 6 source code
lithnet/access-manager
Access Manager provides web-based access to local admin (LAPS) passwords, BitLocker recovery keys, and just-in-time administrative access to Windows computers in a modern, secure, and user-friendly way.
Version Downloads Last Updated
10.0.0-preview.5.25277.114 1,085 6/6/2025
10.0.0-preview.4.25258.110 3,246 5/12/2025
10.0.0-preview.3.25171.5 5,760 4/10/2025
10.0.0-preview.2.25163.2 3,465 3/18/2025
10.0.0-preview.1.25080.5 2,066 2/25/2025
9.0.6 88,824 6/10/2025
9.0.5 195,180 5/13/2025
9.0.4 460,291 4/8/2025
9.0.3 308,450 3/11/2025
9.0.2 362,566 2/11/2025
9.0.1 537,445 1/14/2025
9.0.0 1,004,119 11/12/2024
9.0.0-rc.2.24473.5 33,761 10/8/2024
9.0.0-rc.1.24431.7 9,811 9/10/2024
9.0.0-preview.7.24405.7 8,544 8/13/2024
9.0.0-preview.6.24327.7 17,348 7/9/2024
9.0.0-preview.5.24306.7 6,029 6/11/2024
9.0.0-preview.4.24266.19 4,355 5/21/2024
9.0.0-preview.3.24172.9 8,859 4/11/2024
9.0.0-preview.2.24128.5 2,491 3/12/2024
9.0.0-preview.1.24080.9 25,513 2/13/2024
8.0.2 20,391 6/10/2025
8.0.1 199,006 4/8/2025
8.0.0 22,312,598 11/14/2023
8.0.0-rc.2.23479.6 20,823 10/10/2023
8.0.0-rc.1.23419.4 19,031 9/12/2023
8.0.0-preview.7.23375.6 13,657 8/8/2023
8.0.0-preview.6.23329.7 22,351 7/11/2023
8.0.0-preview.5.23280.8 3,753 6/13/2023
8.0.0-preview.4.23259.5 10,913 5/16/2023
8.0.0-preview.3.23174.8 22,601 4/11/2023
8.0.0-preview.2.23128.3 7,561 3/14/2023
8.0.0-preview.1.23110.8 10,470 2/21/2023
7.0.1 4,518,200 6/13/2023
7.0.0 7,464,460 11/7/2022
7.0.0-rc.2.22472.3 14,802 10/11/2022
7.0.0-rc.1.22426.10 65,891 9/14/2022
7.0.0-preview.7.22375.6 14,142 8/9/2022
7.0.0-preview.6.22324.4 3,872 7/12/2022
7.0.0-preview.5.22301.12 3,280 6/14/2022
7.0.0-preview.4.22229.4 12,134 5/10/2022
7.0.0-preview.3.22175.4 3,340 4/13/2022
7.0.0-preview.2.22152.2 13,402 3/14/2022
7.0.0-preview.1.22076.8 3,785 2/17/2022
6.0.2 14,173,483 6/13/2023
6.0.1 12,341,605 2/8/2022
6.0.0 13,146,645 11/8/2021
6.0.0-rc.2.21480.5 21,734 10/12/2021
6.0.0-rc.1.21451.13 16,745 9/14/2021
6.0.0-preview.7.21377.19 8,364 8/10/2021
6.0.0-preview.6.21352.12 5,649 7/14/2021
6.0.0-preview.5.21301.5 7,791 6/15/2021
6.0.0-preview.4.21253.7 29,652 5/24/2021
6.0.0-preview.3.21201.4 9,332 4/8/2021
6.0.0-preview.2.21154.6 22,957 3/11/2021
6.0.0-preview.1.21102.12 14,730 2/12/2021
5.0.1 14,972,341 10/12/2021 5.0.1 is deprecated because it is no longer maintained.
5.0.0 30,848,680 11/9/2020 5.0.0 is deprecated because it is no longer maintained; 5.0.0 has at least one vulnerability with moderate severity.
5.0.0-rc.2.20475.5 13,402 10/13/2020 5.0.0-rc.2.20475.5 has at least one vulnerability with moderate severity.
5.0.0-rc.1.20451.14 15,636 9/14/2020 5.0.0-rc.1.20451.14 has at least one vulnerability with moderate severity.
5.0.0-preview.8.20407.11 13,579 8/25/2020 5.0.0-preview.8.20407.11 has at least one vulnerability with moderate severity.
5.0.0-preview.7.20364.11 29,548 7/21/2020 5.0.0-preview.7.20364.11 has at least one vulnerability with moderate severity.
5.0.0-preview.6.20305.6 7,994 6/25/2020 5.0.0-preview.6.20305.6 has at least one vulnerability with moderate severity.
5.0.0-preview.5.20278.1 6,262 6/10/2020 5.0.0-preview.5.20278.1 has at least one vulnerability with moderate severity.
5.0.0-preview.4.20251.6 11,648 5/18/2020 5.0.0-preview.4.20251.6 has at least one vulnerability with moderate severity.
5.0.0-preview.3.20214.6 37,225 4/23/2020 5.0.0-preview.3.20214.6 has at least one vulnerability with moderate severity.
5.0.0-preview.2.20160.6 32,249 4/2/2020 5.0.0-preview.2.20160.6 has at least one vulnerability with moderate severity.
5.0.0-preview.1.20120.5 2,886 3/16/2020 5.0.0-preview.1.20120.5 has at least one vulnerability with moderate severity.
4.7.0 17,727,587 12/3/2019 4.7.0 has at least one vulnerability with moderate severity.
4.7.0-preview3.19551.4 5,328 11/13/2019 4.7.0-preview3.19551.4 has at least one vulnerability with moderate severity.
4.7.0-preview2.19523.17 15,617 11/1/2019 4.7.0-preview2.19523.17 has at least one vulnerability with moderate severity.
4.7.0-preview1.19504.10 11,488 10/15/2019 4.7.0-preview1.19504.10 has at least one vulnerability with moderate severity.
4.6.0 2,535,449 9/23/2019 4.6.0 has at least one vulnerability with moderate severity.
4.6.0-rc1.19456.4 6,255 9/16/2019 4.6.0-rc1.19456.4 has at least one vulnerability with moderate severity.
4.6.0-preview9.19421.4 4,455 9/4/2019 4.6.0-preview9.19421.4 has at least one vulnerability with moderate severity.
4.6.0-preview9.19416.11 1,168 9/4/2019 4.6.0-preview9.19416.11 has at least one vulnerability with moderate severity.
4.6.0-preview8.19405.3 12,496 8/13/2019 4.6.0-preview8.19405.3 has at least one vulnerability with moderate severity.
4.6.0-preview7.19362.9 15,091 7/23/2019 4.6.0-preview7.19362.9 has at least one vulnerability with moderate severity.
4.6.0-preview6.19303.8 46,580 6/12/2019 4.6.0-preview6.19303.8 has at least one vulnerability with moderate severity.
4.6.0-preview6.19264.9 1,184 9/4/2019 4.6.0-preview6.19264.9 has at least one vulnerability with moderate severity.
4.6.0-preview5.19224.8 27,956 5/6/2019 4.6.0-preview5.19224.8 has at least one vulnerability with moderate severity.
4.6.0-preview4.19212.13 3,955 4/18/2019 4.6.0-preview4.19212.13 has at least one vulnerability with moderate severity.
4.6.0-preview3.19128.7 8,592 3/6/2019 4.6.0-preview3.19128.7 has at least one vulnerability with moderate severity.
4.6.0-preview.19073.11 39,470 1/29/2019 4.6.0-preview.19073.11 has at least one vulnerability with moderate severity.
4.6.0-preview.18571.3 15,971 12/3/2018 4.6.0-preview.18571.3 has at least one vulnerability with moderate severity.
4.5.0 14,102,315 5/29/2018 4.5.0 has at least one vulnerability with moderate severity.
4.5.0-rc1 103,016 5/6/2018 4.5.0-rc1 has at least one vulnerability with moderate severity.
4.5.0-preview2-26406-04 33,710 4/10/2018 4.5.0-preview2-26406-04 has at least one vulnerability with moderate severity.
4.5.0-preview1-26216-02 68,445 2/26/2018 4.5.0-preview1-26216-02 has at least one vulnerability with moderate severity.
4.5.0-preview1-25914-04 362,689 11/15/2017 4.5.0-preview1-25914-04 has at least one vulnerability with moderate severity.

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