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Informations about the package snmp-packet

IMEdge\SnmpPacket

SNMP packet parser and renderer (encoder/decoder).

Coding Standards Unit Tests Static Analysis PHPStan Level 9 Minimum PHP Version: 8.1 License: MIT Version

Implemented Standards and vendor-specific extensions

There are quite some RFCs and Drafts involved, I'm trying to give some overview.

SNMPv1

While being very old, SNMPv1 is still relevant, and therefore supported.

A Simple Network Management Protocol (SNMP)

SNMPv1, the initial implementation of the SNMP protocol, has been defined in the 1980s. However, it is still relevant, and therefore supported:

SNMPv2c

TODO

SNMPv3

We implemented and tested all official and (well-known) vendor-specific authentication and privacy (encryption) methods.

Authentication Methods

The User-based Security Model (USM) hast been implemented according to RFC 3414 (User-based Security Model (USM) for version 3 of the Simple Network Management Protocol (SNMPv3)). All authentication mechanisms from that RFC and from RFC7860 (HMAC-SHA-2 Authentication Protocols in User-Based Security Model (USM) for SNMPv3) have been implemented.

Privacy / Encryption Methods

Crypto implementation

We're using system-provided MD5/SHA hashing methods, and encryption as provided by OpenSSL. Everything related to (pre-IV), Key generation and Salt exchange have been implemented from scratch.

SNMPv3 standardization history

January 1998 two sets of related RFCs have been published in parallel:

The reason for this have been two irreconcilable factions in the IETF by the end of 1997:

The "experimental" party eventually won, the official "Standard" suffered a silent death, has never been widely adopted, and has only historic relevance es of today. In 1999 the experimental RFCs have been updated (RFC 2571–2575), became a Draft Standard, and replaced all the former RFCs from both parties. Finally, in Dezember 2002, RFC 3410-3418 became an Internet Standard.

Other related RFCs

TODO

All versions of snmp-packet with dependencies

PHP Build Version
Package Version
Requires php Version >=8.1.0
ext-ctype Version *
ext-gmp Version *
ext-json Version *
ext-openssl Version *
ext-pcntl Version *
freedsx/asn1 Version ^0.4.8
imedge/json Version >=0.1
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