3A certification, namely to AAA AAA: respectively Authentication, Authorization, Accounting Certification (Authentication): authenticate users and network services can be used; Authorization (Authorization): according to the results of the open network authentication services to users; accounting (Accounting) : records the amount of various network services, and provided to the billing system. Comments: First, the authentication section provides user authentication. Entire certification usually by a user to enter a user name and password for privilege audit. Certified principle is that each user has a unique privilege to obtain standard. By the AAA server with the user's standard database for each user and check if the standard. If so, then the user is authenticated. If you do not comply with 3A approval role, then declined to provide internet access. AAA is a provider of network security system developed by Cisco. AAA protocols are commonly used Radius 3A certification, see RFC 2865 3A certification training, RFC 2866. There is also the HWTACACS (Huawei Terminal Access Controller Access Control System) protocol. HWTACACS is Huawei TACACS extended HWTACACS protocol is carried out is an enhanced security protocol TACACS (RFC1492) basis. The agreement is similar to the RADIUS protocol, mainly through - Communication "client-server" mode and HWTACACS server to achieve a variety of user AAA functions. Different HWTACACS and RADIUS is that: l RADIUS protocol based on UDP 3A certified content, while HWTACACS is based on TCP protocol. l RADIUS authentication and authorization to bind together, while HWTACACS authentication and authorization is independent. l RADIUS only encrypts the user's password, HWTACACS can encrypt the entire message. 3A certification role, Jieyang 3A certification, enterprises of the road provided by enterprises in Huizhou City Road Enterprise Management Services Limited. Huizhou City, the rate of the Road Enterprise Management Services Ltd. (isoew.com) strong, credible, in other industries in Huizhou, Guangdong has accumulated a large number of loyal customers. The company better work attitude and continuous improvement of innovative ideas will lead enterprises into the brilliant road and you work for a better future!