Editing Simple Network Management Protocol (section)

=== Version 1 ===
SNMP version 1 (SNMPv1) is the initial implementation of the SNMP protocol. The design of SNMPv1 was done in the 1980s by a group of collaborators who viewed the officially sponsored OSI/IETF/NSF (National Science Foundation) effort (HEMS/CMIS/CMIP) as both unimplementable in the computing platforms of the time as well as potentially unworkable. SNMP was approved based on a belief that it was an interim protocol needed for taking steps towards large-scale deployment of the Internet and its commercialization.

The first [[Request for Comments]] (RFCs) for SNMP, now known as SNMPv1, appeared in 1988:
* {{IETF RFC|1065}}&nbsp;— Structure and identification of management information for TCP/IP-based internets
* {{IETF RFC|1066}}&nbsp;— Management information base for network management of TCP/IP-based internets
* {{IETF RFC|1067}}&nbsp;— A simple network management protocol

In 1990, these documents were superseded by:
* {{IETF RFC|1155}}&nbsp;— Structure and identification of management information for TCP/IP-based internets
* {{IETF RFC|1156}}&nbsp;— Management information base for network management of TCP/IP-based internets
* {{IETF RFC|1157}}&nbsp;— A simple network management protocol

In 1991, {{IETF RFC|1156}} (MIB-1) was replaced by the more often used:
* {{IETF RFC|1213}}&nbsp;— Version 2 of management information base (MIB-2) for network management of TCP/IP-based internets

SNMPv1 is widely used and is the [[De facto standard|de facto]] network management protocol in the Internet community.<ref>{{cite book |last1=Wiley |first1=John |title=Engineering Information Security: The Application of Systems Engineering Concepts to Achieve Information Assurance |date=2015-12-01 |page=366 |publisher=John Wiley & Sons |url=https://books.google.com/books?id=6i1cCwAAQBAJ&q=snmpv1+is+obsolete&pg=PA366 |access-date=2017-09-14|isbn=9781119104711 }}</ref>

SNMPv1 may be carried by [[transport layer]] protocols such as User Datagram Protocol (UDP), OSI [[Connectionless-mode Network Service]] (CLNS), AppleTalk [[Datagram Delivery Protocol]] (DDP), and Novell [[Internetwork Packet Exchange]] (IPX).

Version 1 has been criticized for its poor security.<ref name="aethis">{{cite web |title=Security in SNMPv3 versus SNMPv1 or v2c |url=http://www.aethis.com/solutions/snmp_research/snmpv3_vs_wp.pdf |archive-url=https://web.archive.org/web/20130429201847/http://www.aethis.com/solutions/snmp_research/snmpv3_vs_wp.pdf |archive-date=2013-04-29}}</ref> The specification does, in fact, allow room for custom authentication to be used, but widely used implementations "support only a trivial authentication service that identifies all SNMP messages as authentic SNMP messages."<ref>{{IETF RFC|1157}}</ref> The security of the messages, therefore, becomes dependent on the security of the channels over which the messages are sent. For example, an organization may consider their internal network to be sufficiently secure that no encryption is necessary for its SNMP messages. In such cases, the ''community name'', which is transmitted in [[cleartext]], tends to be viewed as a de facto password, in spite of the original specification.