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Project Description

This project contains a complete managed .Net SPF validation, SenderID validation and a dns client and dns server implementation written in C#.

Donations

If you use this library, please send me your feedback and add a link to this page. In addition you can donate via Ko-fi, Paypal or send me a gift from my Amazon.de wishlist

Nuget Package

The library is avaible on Nuget, too: http://nuget.org/packages/ARSoft.Tools.Net

API Documentation

A API documentation can be found at https://docs.ar-soft.de/arsoft.tools.net

Features

Parsing and Validating of SPF/SenderID records:

  • RFC 4406 - Sender ID: Authenticating E-Mail
  • RFC 4408 - Sender Policy Framework (SPF)
  • RFC 7208 - Sender Policy Framework (SPF) for Authorizing Use of Domains in Email, Version 1

Encoding and Decoding:

  • RFC 4648 - The Base16, Base32, and Base64 Data Encodings

DNS related

  • DNS Client
  • Client for Link-Local Multicast Name Resolution
  • One-shot-client for Multicast DNS
  • (Multithreaded) DNS Server
  • Supports synchronous as well as asynchronous resolving
  • Discovery of local configured resolver dns servers on Windows and Linux
  • Different resolvers
    • Stub resolver
    • Recursive resolver
    • DNSSEC validating stub resolver
    • DNSSEC validating recursive resolver
  • UDP and TCP support
  • Full IPv6 support
  • DANE validation stream class
  • RFC 1034 - Domain Names - Concepts and Facilities
  • RFC 1035 - Domain Names – Implementation and Specification
  • RFC 1183 - New DNS RR Definitions
  • RFC 1348 - DNS NSAP RRs
  • RFC 1637 - DNS NSAP Resource Records
  • RFC 1706 - DNS NSAP Resource Records
  • RFC 1712 - DNS Encoding of Geographical Location
  • RFC 1876 - A Means for Expressing Location Information in the Domain Name System
  • RFC 1995 - Incremental Zone Transfer
  • RFC 1996 - A Mechanism for Prompt Notification of Zone Changes (DNS NOTIFY)
  • RFC 2136 - Dynamic Updates in the Domain Name System
  • RFC 2163 - Using the Internet DNS to Distribute MIXER Conformant Global Address Mapping (MCGAM)
  • RFC 2168 - Resolution of Uniform Resource Identifiers using the Domain Name System
  • RFC 2181 - Clarifications to the DNS Specification
  • RFC 2230 - Key Exchange Delegation Record for the DNS
  • RFC 2308 - Negative Caching of DNS Queries (DNS NCACHE)
  • RFC 2535 - Domain Name System Security Extensions
  • RFC 2536 - DSA KEYs and SIGs in the Domain Name System
  • RFC 2537 - RSA/MD5 KEYs and SIGs in the Domain Name System
  • RFC 2539 - Storage of Diffie-Hellman Keys in the Domain Name System
  • RFC 2671 - Extension Mechanisms for DNS (EDNS0)
  • RFC 2672 - Non-Terminal DNS Name Redirection
  • RFC 2673 - Binary Labels in the Domain Name System
  • RFC 2782 - A DNS RR for specifying the location of services (DNS SRV)
  • RFC 2845 - Secret Key Transaction Authentication for DNS (TSIG)
  • RFC 2915 - The Naming Authority Pointer (NAPTR) DNS Resource Record
  • RFC 2930 - Secret Key Establishment for DNS (TKEY RR)
  • RFC 2931 - DNS Request and Transaction Signatures (SIG(0)s) (Record parsing only)
  • RFC 3110 - RSA/SHA-1 SIGs and RSA KEYs in the Domain Name System
  • RFC 3123 - A DNS RR Type for Lists of Address Prefixes (APL RR)
  • RFC 3225 - Indicating Resolver Support of DNSSEC
  • RFC 3226 - DNSSEC and IPv6 A6 aware server/resolver message size requirements
  • RFC 3403 - Dynamic Delegation Discovery System (DDDS)
  • RFC 3425 - Obsoleting IQUERY
  • RFC 3596 - DNS Extensions to Support IP Version 6
  • RFC 3597 - Handling of Unknown DNS Resource Record (RR) Types
  • RFC 3658 - Delegation Signer (DS) Resource Record (RR)
  • RFC 3755 - Legacy Resolver Compatibility for Delegation Signer (DS)
  • RFC 3757 - Domain Name System KEY (DNSKEY) Resource Record (RR) Secure Entry Point (SEP) Flag
  • RFC 4025 - A Method for Storing IPsec Keying Material in DNS
  • RFC 4033 - DNS Security Introduction and Requirements
  • RFC 4034 - Resource Records for the DNS Security Extensions
  • RFC 4035 - Protocol Modifications for the DNS Security Extensions
  • RFC 4255 - Using DNS to Securely Publish Secure Shell (SSH) Key Fingerprints
  • RFC 4398 - Storing Certificates in the Domain Name System (DNS)
  • RFC 4431 - The DNSSEC Lookaside Validation (DLV) DNS Resource Record
  • RFC 4509 - Use of SHA-256 in DNSSEC Delegation Signer (DS) Resource Records (RRs)
  • RFC 4635 - HMAC SHA TSIG Algorithm Identifiers
  • RFC 4701 - A DNS Resource Record (RR) for Encoding Dynamic Host Configuration Protocol (DHCP) Information (DHCID RR)
  • RFC 4795 - Link-Local Multicast Name Resolution (LLMNR)
  • RFC 5001 - DNS Name Server Identifier (NSID) Option
  • RFC 5155 - DNS Security (DNSSEC) Hashed Authenticated Denial of Existence
  • RFC 5205 - Host Identity Protocol (HIP) Domain Name System (DNS) Extension
  • RFC 5452 - Measures for Making DNS More Resilient against Forged Answers
  • RFC 5702 - Use of SHA-2 Algorithms with RSA in DNSKEY and RRSIG Resource Records for DNSSEC
  • RFC 5864 - DNS SRV Resource Records for AFS
  • RFC 5933 - Use of GOST Signature Algorithms in DNSKEY and RRSIG Resource Records for DNSSEC
  • RFC 5936 - DNS Zone Transfer Protocol (AXFR)
  • RFC 5966 - DNS Transport over TCP - Implementation Requirements
  • RFC 6563 - Moving A6 to Historic Status
  • RFC 6594 - Use of the SHA-256 Algorithm with RSA, Digital Signature Algorithm (DSA), and Elliptic Curve DSA (ECDSA) in SSHFP Resource Records
  • RFC 6605 - Elliptic Curve Digital Signature Algorithm (DSA) for DNSSEC
  • RFC 6672 - DNAME Redirection in the DNS (Record parsing only)
  • RFC 6698 - The DNS-Based Authentication of Named Entities (DANE) Transport Layer Security (TLS) Protocol: TLSA
  • RFC 6742 - DNS Resource Records for the Identifier-Locator Network Protocol (ILNP)
  • RFC 6762 - Multicast DNS (One-shot queries only)
  • RFC 6840 - Clarifications and Implementation Notes for DNS Security (DNSSEC)
  • RFC 6844 - DNS Certification Authority Authorization (CAA) Resource Record
  • RFC 6891 - Extension Mechanisms for DNS (EDNS(0))
  • RFC 6975 - Signaling Cryptographic Algorithm Understanding in DNS Security Extensions (DNSSEC)
  • RFC 7043 - Resource Records for EUI-48 and EUI-64 Addresses in the DNS
  • RFC 7129 - Authenticated Denial of Existence in the DNS
  • RFC 7208 - Sender Policy Framework (SPF) for Authorizing Use of Domains in Email, Version 1
  • RFC 7218 - Adding Acronyms to Simplify Conversations about DNS-Based Authentication of Named Entities (DANE)
  • RFC 7314 - Extension Mechanisms for DNS (EDNS) EXPIRE Option
  • RFC 7344 - Automating DNSSEC Delegation Trust Maintenance
  • RFC 7477 - Child-to-Parent Synchronization in DNS
  • RFC 7479 - Using Ed25519 in SSHFP Resource Records
  • RFC 7553 - The Uniform Resource Identifier (URI) DNS Resource Record
  • RFC 7766 - DNS Transport over TCP - Implementation Requirements
  • RFC 7828 - The edns-tcp-keepalive EDNS0 Option (Option parsing only)
  • RFC 7830 - The EDNS(0) Padding Option
  • RFC 7858 - Specification for DNS over Transport Layer Security (TLS)
  • RFC 7871 - Client Subnet in DNS Queries (Option parsing only)
  • RFC 7873 - Domain Name System (DNS) Cookies (Option parsing only)
  • RFC 7929 - DNS-Based Authentication of Named Entities (DANE) Bindings for OpenPGP
  • RFC 8005 - Host Identity Protocol (HIP) Domain Name System (DNS) Extension
  • RFC 8080 - Edwards-Curve Digital Security Algorithm (EdDSA) for DNSSEC
  • RFC 8162 - Using Secure DNS to Associate Certificates with Domain Names for S/MIME
  • RFC 8427 - Representing DNS Messages in JSON
  • RFC 8484 - DNS Queries over HTTPS (DoH)
  • RFC 8749 - Moving DNSSEC Lookaside Validation (DLV) to Historic Status
  • RFC 8777 - DNS Reverse IP Automatic Multicast Tunneling (AMT) Discovery
  • RFC 8945 - Secret Key Transaction Authentication for DNS (TSIG)
  • RFC 8976 - Message Digest for DNS Zones
  • RFC 9210 - DNS Transport over TCP - Operational Requirements
  • RFC 9373 - EdDSA Value for IPSECKEY
  • draft-vixie-dnsext-dns0x20 - Use of Bit 0x20 in DNS Labels to Improve Transaction Identity
  • draft-sekar-dns-llq - DNS Long-Lived Queries
  • draft-sekar-dns-ul - Dynamic DNS Update Leases
  • draft-cheshire-edns0-owner-option - EDNS0 OWNER Option
  • draft-ietf-dnsop-svcb-https - Service binding and parameter specification via the DNS (DNS SVCB and HTTPS RRs) (Record parsing only)

License

The library is released under Apache License 2.0

Sponsors

  • JetBrains supports this project with a free license of ReSharper.