HP 4100GL Manuel d'utilisateur Page 102
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- Table des matières
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
Configuring Secure Shell (SSH)
Configuring the Switch for SSH Operation
SSH does not protect the switch from unauthorized access via the web
interface, Telnet, SNMP, or the serial port. While web and Telnet access can
be restricted by the use of passwords local to the switch, if you are unsure of
the security this provides, you may want to disable web-based and/or Telnet
access (no web-management and no telnet). If you need to increase SNMP
security, you should use SNMP version 3 only. If you need to increase the
security of your web interface see the section on SSL. Another security
measure is to use the Authorized IP Managers feature described in the switch’s
Management and Configuration Guide. To protect against unauthorized
access to the serial port (and the Clear button, which removes local password
protection), keep physical access to the switch restricted to authorized per-
sonnel.
5. Configuring the Switch for SSH Authentication
Note that all methods in this section result in authentication of the switch’s
public key by an SSH client. However, only Option B, below results in the
switch also authenticating the client’s public key. Also, for a more detailed
discussion of the topics in this section, refer to
“Further Information on SSH
Client Public-Key Authentication” on page 4-22
Note Hewlett-Packard recommends that you always assign a Manager-Level
(enable) password to the switch. Without this level of protection, any user
with Telnet, web, or serial port access to the switch can change the switch’s
configuration. Also, if you configure only an Operator password, entering
the Operator password through telnet, web, ssh or serial port access enables
full manager privileges. See
“1. Assigning a Local Login (Operator) and
Enable (Manager) Password” on page 4-9.
Option A: Configuring SSH Access for Password-Only SSH
Authentication. When configured with this option, the switch uses its pub-
lic key to authenticate itself to a client, but uses only passwords for client
authentication.
Syntax: aaa authentication ssh login < local | tacacs | radius >[< local | none >]
Configures a password method for the primary and
secondary login (Operator) access. If you do not specify
an optional secondary method, it defaults to none.
aaa authentication ssh enable < local | tacacs | radius>[< local | none >]
4-18
- HP Procurve Series 4100GL 3
- Switches 3
- 2 TACACS+ Authentication 6
- Getting Started 13
- Introduction 14
- Command Syntax Conventions 16
- Simulating Display Output 16
- Related Publications 17
- Sources for More Information 20
- Need Only a Quick Start? 21
- Menu: Setting Passwords 26
- TACACS+ Authentication 29
- Software 31
- Release G.05. xx 31
- Terminology Used in TACACS 32
- Applications: 32
- General System Requirements 33
- Privilege Levels 35
- Before You Begin 37
- Configuration 38
- Caution Regarding 41
- Login Primary 41
- Note on 44
- Encryption Keys 44
- First-Choice TACACS+ Server 46
- How Authentication Operates 48
- Local Authentication Process 50
- Using the Encryption Key 51
- Access When Using TACACS+ 52
- Authentication 52
- Messages Related to TACACS+ 53
- Preparation: 59
- Want RADIUS To Protect 62
- The switch now 63
- SSH authentication 63
- Access When Using RADIUS 69
- IP address: 10.33.18.151 73
- Stop-Only: 75
- Start-Stop: 75
- Viewing RADIUS Statistics 77
- RADIUS Accounting Statistics 80
- Prerequisite for Using SSH 88
- Public Key Formats 89
- Host Public 96
- Key for the 96
- Bit size 97
- Exponent <e> 97
- Modulus <n> 97
- Client Contact Behavior 99
- Execute no ip ssh 100
- Public-Key Authentication 106
- Bit Size Exponent 107
- <e> 107
- Modulus 107
- <n> 107
- Comment 107
- Key Index 109
- Contents 113
- Overview 114
- Terminology 115
- Prerequisite for Using SSL 116
- Operation 119
- Password 120
- Security Tab 120
- Show host certificate 124
- Current SSL 127
- Host Certificate 127
- Browser Contact Behavior 129
- Enable SLL 132
- Common Errors in SSL setup 133
- (802.1x) 135
- Overview 136
- How 802.1x Operates 139
- as defined in the 142
- 802.1x standard 142
- Access Control (802.1x) 145
- Authenticators 148
- 802.1x Open VLAN Mode 154
- 802.1x Open VLAN Mode 155
- Unauthorized-Client VLANs 158
- 802.1x Devices 165
- Blocking a Non 166
- 802.1x Device 166
- Other Switches 167
- Statistics, and Counters 171
- The switch reboots 176
- After the 802.1x session 180
- Basic Operation 184
- • PC1 can access Switch A 186
- Planning Port Security 187
- Configuring Port Security 192
- Security Features 197
- Alert Flags 197
- Resetting Alert Flags 199
- Yes” for the port on which 201
- Options 209
- Access Levels 209
- Stations 210
- Managers 211
- Building IP Masks 215
- IP Entry 216
- Operating Notes 218
- Using Authorized IP Managers 219
- Index – 1 221
- 2 – Index 222
- Index – 3 223
- 4 – Index 224
- Index – 5 225
- 6 – Index 226
- 5990-3032 228
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