HP Switch 6120 Manuale Utente Pagina 280
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8-7
Configuring Advanced Threat Protection
DHCP Snooping
Figure 8-2. Example of Show DHCP Snooping Statistics
Enabling DHCP Snooping on VLANS
DHCP snooping on VLANs is disabled by default. To enable DHCP snooping
on a VLAN or range of VLANs enter this command:
ProCurve(config)# dhcp-snooping vlan <vlan-id-range>
You can also use this command in the vlan context, in which case you cannot
enter a range of VLANs for snooping.
Below is an example of DHCP snooping enabled on VLAN 4.
Figure 8-3. Example of DCHP Snooping on a VLAN
ProCurve(config)# show dhcp-snooping stats
Packet type Action Reason Count
----------- ------- ---------------------------- ---------
server forward from trusted port 8
client forward to trusted port 8
server drop received on untrusted port 2
server drop unauthorized server 0
client drop destination on untrusted port 0
client drop untrusted option 82 field 0
client drop bad DHCP release request 0
client drop failed verify MAC check 0
ProCurve(config)# dhcp-snooping vlan 4
ProCurve(config)# show dhcp-snooping
DHCP Snooping Information
DHCP Snooping : Yes
Enabled Vlans : 4
Verify MAC : Yes
Option 82 untrusted policy : drop
Option 82 Insertion : Yes
Option 82 remote-id : mac
- Access Security Guide 1
- Hewlett-Packard Company 2
- 3 Web and MAC Authentication 6
- 4 TACACS+ Authentication 7
- 10 Configuring Port-Based and 12
- Product Documentation 18
- Software Feature Index 19
- Intelligent Edge Software 20
- Features 20
- Security Overview 23
- Introduction 24
- Access Security Features 25
- Network Security Features 29
- Physical Security 31
- SNMP Security Guidelines 37
- Dynamic Configuration Arbiter 39
- Network Immunity Manager 40
- (IDM) 43
- Menu: Setting Passwords 49
- Security tab 52
- [Device Passwords] 52
- [Apply Changes] 52
- Credentials 54
- Password Command Options 55
- SNMP Security Credentials 56
- Restrictions 64
- Front-Panel Security 66
- Front-Panel Button Functions 67
- Clear Button 68
- Reset Button 68
- ResetClear 69
- Password Recovery 75
- [Y] (for “Yes”) 76
- [N] (for “No”) 76
- Password Recovery Process 77
- MAC Authentication 81
- RADIUS-Based Authentication 83
- Wireless Clients 83
- Web-based Authentication 84
- MAC-based Authentication 86
- Operating Rules and Notes 89
- Setup Procedure for Web/MAC 91
- Web and MAC Authentication 100
- ProCurve Switch (config)# 103
- Files (Optional) 111
- Customizing HTML Templates 112
- Customizable HTML Templates 113
- Overview 127
- Client Status 137
- TACACS+ Authentication 138
- Terminology Used in TACACS 140
- Applications: 140
- General System Requirements 142
- Note on 144
- Privilege Levels 144
- Before You Begin 145
- Configuration 146
- Server Contact Configuration 147
- Authentication Parameters 149
- Caution Regarding 153
- Login Primary 153
- Encryption Keys 156
- First-Choice TACACS+ Server 158
- write mem) 160
- How Authentication Operates 161
- Local Authentication Process 163
- Using the Encryption Key 164
- Access When Using TACACS+ 165
- Authentication 165
- Messages Related to TACACS+ 166
- Operation 166
- Operating Notes 166
- Accounting 168
- Contents 169
- Accounting Services 171
- Configuration MIB 171
- Terminology 172
- You Want RADIUS To Protect 177
- (hpSwitchAuth) is disabled 190
- Commands Authorization 193
- Enabling Authorization 194
- Additional RADIUS Attributes 203
- Configuring RADIUS Accounting 204
- Interim Updating Options 211
- Viewing RADIUS Statistics 213
- RADIUS Accounting Statistics 216
- as both the primary 220
- Prerequisite for Using SSH 225
- Public Key Formats 225
- Enable (Manager) Password 230
- Host Public 232
- Key for the 232
- Configuring Key Lengths 233
- Client Contact Behavior 235
- ■ Execute no ip ssh 237
- Note on Port 239
- Public-Key Authentication 244
- Bit Size Exponent <e> 246
- Modulus <n> 246
- Note on Public 247
- Key Index Number 249
- Logging Messages 251
- Debug Logging 252
- Prerequisite for Using SSL 257
- Password Button 260
- Security Tab 260
- Generate New Key 263
- Enter certificate Arguments 263
- Generate New Certificate 263
- Show host certificate command 264
- [SSL] button 266
- Web browser interface 267
- Browser Contact Behavior 269
- Common Errors in SSL setup 273
- DHCP Snooping 277
- Enabling DHCP Snooping 278
- The DHCP Binding Database 285
- Enabling Debug Logging 286
- Operational Notes 286
- Log Messages 287
- Dynamic ARP Protection 289
- Configuring Trusted Ports 291
- Dynamic IP Lockdown 296
- Prerequisite: DHCP Snooping 297
- Enabling Dynamic IP Lockdown 299
- Database 301
- Adding a Static Binding 302
- Bindings 303
- Debugging Dynamic IP Lockdown 304
- Examples 309
- Filter Types and Operation 313
- Source-Port Filters 314
- Named Source-Port Filters 316
- [ index ] 318
- * ), indicating that the 327
- Editing a Source-Port Filter 328
- Filter Indexing 329
- Configuring Port-Based and 331
- User Authentication Methods 334
- as defined in the 337
- 802.1X standard 337
- VLAN Membership Priority 340
- Access Control 344
- Authenticators 348
- Based Authentication 350
- Wake-on-LAN Traffic 357
- 802.1X Open VLAN Mode 359
- VLAN Membership Priorities 360
- Unauthorized-Client VLANs 366
- Configure Port-Security 375
- Port-Security 376
- Other Switches 377
- Supplicant Port Configuration 379
- Statistics, and Counters 381
- ■ The switch reboots 394
- Affects VLAN Operation 395
- VLAN Assignment on a Port 396
- Based Authentication Session 398
- After the 802.1X session 401
- < port-number >: 403
- Port Security 407
- Eavesdrop Protection 408
- Blocking Unauthorized Traffic 408
- Trunk Group Exclusion 409
- Planning Port Security 410
- Port Security Display Options 411
- Configuring Port Security 415
- listing 418
- use this command syntax: 418
- Retention of Static Addresses 420
- MAC Lockdown 425
- MAC Lockdown Operating Notes 428
- MAC Lockout 429
- # VLANs # Lockout MACs 431
- < = 1024 16 431
- 1025-2048 8 431
- Port Security and MAC Lockout 432
- Security Features 433
- Alert Flags 433
- Send-Disable 435
- Resetting Alert Flags 436
- Yes” for the port on which 437
- Using Authorized IP Managers 443
- Access Levels 445
- Stations 446
- Managers 447
- Building IP Masks 452
- IP Entry 453
- Numerics 457
- 2 – Index 458
- Index – 3 459
- 4 – Index 460
- Index – 5 461
- 6 – Index 462
- Index – 7 463
- 8 – Index 464
- Index – 9 465
- 10 – Index 466
- Index – 11 467
- 12 – Index 468
- *5992-5525* 469
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