Owner manual
Table Of Contents
- Contents
- Figures
- Tables
- Preface
- Section I
- Basic Operations
- Chapter 1
- Overview
- Chapter 2
- Enhanced Stacking
- Chapter 3
- SNMPv1 and SNMPv2c
- Chapter 4
- MAC Address Table
- Chapter 5
- Static Port Trunks
- Chapter 6
- LACP Port Trunks
- Chapter 7
- Port Mirror
- Section II
- Advanced Operations
- Chapter 8
- File System
- Chapter 9
- Event Logs and the Syslog Client
- Chapter 10
- Classifiers
- Chapter 11
- Access Control Lists
- Chapter 12
- Class of Service
- Chapter 13
- Quality of Service
- Chapter 14
- Denial of Service Defenses
- Chapter 15
- Power Over Ethernet
- Section III
- Snooping Protocols
- Chapter 16
- IGMP Snooping
- Chapter 17
- MLD Snooping
- Chapter 18
- RRP Snooping
- Chapter 19
- Ethernet Protection Switching Ring Snooping
- Section IV
- SNMPv3
- Chapter 20
- SNMPv3
- Section V
- Spanning Tree Protocols
- Chapter 21
- Spanning Tree and Rapid Spanning Tree Protocols
- Chapter 22
- Multiple Spanning Tree Protocol
- Section VI
- Virtual LANs
- Chapter 23
- Port-based and Tagged VLANs
- Chapter 24
- GARP VLAN Registration Protocol
- Chapter 25
- Multiple VLAN Modes
- Chapter 26
- Protected Ports VLANs
- Chapter 27
- MAC Address-based VLANs
- Section VII
- Routing
- Chapter 28
- Internet Protocol Version 4 Packet Routing
- Supported Platforms
- Overview
- Routing Interfaces
- Interface Names
- Static Routes
- Routing Information Protocol (RIP)
- Default Routes
- Equal-cost Multi-path (ECMP) Routing
- Routing Table
- Address Resolution Protocol (ARP) Table
- Internet Control Message Protocol (ICMP)
- Routing Interfaces and Management Features
- Local Interface
- AT-9408LC/SP AT-9424T/GB, and AT-9424T/SP Switches
- Routing Command Example
- Non-routing Command Example
- Upgrading from AT-S63 Version 1.3.0 or Earlier
- Chapter 29
- BOOTP Relay Agent
- Chapter 30
- Virtual Router Redundancy Protocol
- Section VIII
- Port Security
- Chapter 31
- MAC Address-based Port Security
- Chapter 32
- 802.1x Port-based Network Access Control
- Section IX
- Management Security
- Chapter 33
- Web Server
- Chapter 34
- Encryption Keys
- Chapter 35
- PKI Certificates and SSL
- Chapter 36
- Secure Shell (SSH)
- Chapter 37
- TACACS+ and RADIUS Protocols
- Chapter 38
- Management Access Control List
- Appendix A
- AT-S63 Management Software Default Settings
- Address Resolution Protocol Cache
- Boot Configuration File
- BOOTP Relay Agent
- Class of Service
- Denial of Service Defenses
- 802.1x Port-Based Network Access Control
- Enhanced Stacking
- Ethernet Protection Switching Ring (EPSR) Snooping
- Event Logs
- GVRP
- IGMP Snooping
- Internet Protocol Version 4 Packet Routing
- MAC Address-based Port Security
- MAC Address Table
- Management Access Control List
- Manager and Operator Account
- Multicast Listener Discovery Snooping
- Public Key Infrastructure
- Port Settings
- RJ-45 Serial Terminal Port
- Router Redundancy Protocol Snooping
- Server-based Authentication (RADIUS and TACACS+)
- Simple Network Management Protocol
- Simple Network Time Protocol
- Spanning Tree Protocols (STP, RSTP, and MSTP)
- Secure Shell Server
- Secure Sockets Layer
- System Name, Administrator, and Comments Settings
- Telnet Server
- Virtual Router Redundancy Protocol
- VLANs
- Web Server
- Appendix B
- SNMPv3 Configuration Examples
- Appendix C
- Features and Standards
- 10/100/1000Base-T Twisted Pair Ports
- Denial of Service Defenses
- Ethernet Protection Switching Ring Snooping
- Fiber Optic Ports (AT-9408LC/SP Switch)
- File System
- DHCP and BOOTP Clients
- Internet Protocol Multicasting
- Internet Protocol Version 4 Routing
- MAC Address Table
- Management Access and Security
- Management Access Methods
- Management Interfaces
- Management MIBs
- Port Security
- Port Trunking and Mirroring
- Spanning Tree Protocols
- System Monitoring
- Traffic Control
- Virtual LANs
- Virtual Router Redundancy Protocol
- Appendix D
- MIB Objects
- Index
Chapter 20: SNMPv3
206 Section IV: SNMPv3
SNMPv3 Authentication Protocols
The SNMPv3 protocol supports two authentication protocols—HMAC-
MD5-96 (MD5) and HMAC-SHA-96 (SHA). Both MD5 and SHA use an
algorithm to generate a message digest. Each authentication protocol
authenticates a user by checking the message digest. In addition, both
protocols use keys to perform authentication. The keys for both protocols
are generated locally using the Engine ID, a unique identifier that is
assigned to the switch automatically, and the user password. You modify
a key only by modifying the user password.
In addition, you have the option of assigning no user authentication. In this
case, no authentication is performed for this user. You may want to make
this configuration for someone with super-user capabilities.
Note
The keys generated by the MD5 and SHA protocols are specific to
the SNMPv3 protocol. They have no relation to the SSL and SSH
keys for encryption.