SNMPv3协议安全机制的研究

Research on Security Mechanism of Protocol with SNMPv3

随着计算机网络的高速发展,网络安全问题已成为目前研究的热点和业界瞩目的焦点。SNMP已成为应用最广泛的网络管理协议之一。自从SNMPv3规范提出后,SNMP的安全性得到了很好的提高,使得SNMP能够更有效地对网络进行控制和管理。首先,提出SNMP网络管理存在的安全隐患,介绍了SNMPv3的框架和消息格式,针对SNMP存在的不足介绍了SNMPv3的基于用户的安全模型和基于视图访问控制模型,并详尽讨论了SNMPv3的认证、时限、保密、访问控制等安全服务机制,最后提出SNMPv3存在的问题。

With the rapid development of the computer network,the safety of Internet has become the focus of the computer society and the researchers.SNMP is one of the Network Management Protocols which has been broadly applied.After the criterion of SNMPv3 is put forward,the safety of SNMP has highly improved.Now.SNMP can control and manage network more effectively.Firstly,puts forward the security threats to network management with SNMP,and introduces the frame and format of the message of SNMPv3.then introduces the User—based Security ModeI（USM）and View—based Access Control Model（VACM）for SNMPv3 on these drawbacks,discussing the security mechanism for SNMPv3,such as authentication,time limit,privacy and access controlled in details.Finally puts forward the problem of SNMPv3 in existence.