Cisco Systems ESW 500 Manual de usuario Pagina 202
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- Tabla de contenidos
- MARCADORES
Valorado. / 5. Basado en revisión del cliente
Configuring Device Security
Defining Dynamic ARP Inspection
ESW 500 Series Switches Administration Guide 202
-
VLAN
— Indicates that DHCP Snooping is not enabled on the VLAN.
-
Trusted Port
— Indicates the port is a trusted port.
-
Resource Problem
— Indicates that the TCAM is full.
STEP4 Define the relevant fields. Click Apply and the device is updated.
Defining Dynamic ARP Inspection
Dynamic Address Resolution Protocol
(ARP) is a TCP/IP protocol for translating IP
addresses into MAC addresses. Classic ARP does the following:
• Permits two hosts on the same network to communicates and send packets.
• Permits two hosts on different packets to communicate via a gateway.
• Permits routers to send packets via a host to a different router on the same
network.
• Permits routers to send packets to a destination host via a local host.
ARP Inspection intercepts, discards, and logs ARP packets that contain invalid IP-
to-MAC address bindings. This eliminates man-in-the-middle attacks, where false
ARP packets are inserted into the subnet. Packets are classified as:
• Trusted — Indicates that the interface IP and MAC address are recognized,
and recorded in the ARP Inspection List. Trusted packets are forward without
ARP Inspection.
• Untrusted — Indicates that the packet arrived from an interface that does not
have a recognized IP and MAC addresses. The packet is checked for:
-
Source MAC
— Compares the packet’s source MAC address in the
Ethernet header against the sender’s MAC address in the ARP request.
This check is performed on both ARP requests and responses.
-
Destination MAC
— Compares the packet’s destination MAC address in
the Ethernet header against the destination interface’s MAC address.
This check is performed for ARP responses.
-
IP Addresses
— Checks the ARP body for invalid and unexpected IP
addresses. Addresses include 0.0.0.0, 255.255.255.255, and all IP
Multicast addresses.
- Cisco Small Business Pro 1
- ESW 500 Series Switches 1
- ADMINISTRATION 1
- Chapter : Getting Started 12 3
- Contents 10
- Getting Started 12
- Typical Installation Methods 13
- Physical Connectivity 14
- # Port Description 15
- ESW-520-24/24P 16
- ESW-520-48/48P 16
- ESW-540-24/24P 16
- ESW-540-48 16
- Connecting to the Switch 17
- • Subnet mask — 255.255.255.0 18
- STEP 8 Click Apply. The 19
- IPv4 Interface 20
- Log In page 22
- STEP 3 Click Log In. The 23
- • Device Manager 26
- • Properties 26
- • Annotation 26
- 3 Getting Started 29
- Checking the Software Version 30
- CDP page 31
- Properties 32
- Smartport Roles 34
- Ports Wizard 35
- Access Point 36
- PoE Settings 38
- Saving the Configuration 40
- TFTP Server 42
- Source File 42
- After Reset 43
- Source File Name 44
- Destination File Name 44
- Resetting the Device 46
- Logging Off the Device 47
- Using The Switch Console Port 48
- Managing Device Information 52
- Health and Monitoring 59
- Defining System Information 60
- System Information Page 61
- Viewing Device Health 62
- CDP Page 65
- Bonjour Page 69
- TCAM Utilization 70
- TCAM Utilization Page 71
- Managing Smart Ports 72
- Smart Ports for Desktops Page 73
- System Dashboard Page 74
- Ports Setting Page 74
- Assign Profile 75
- Smart Ports 75
- Desktop Settings Page 75
- Dynamic Lock 76
- Discard 76
- VLAN ID 76
- IP Phones + Desktops 79
- Trunk Native VLAN ID 81
- STEP4 Select 83
- Edit Smart Port Router Page 86
- Smart Ports Setting Page 87
- Smart ports Wizard 87
- Smart ports Setting 88
- STEP 5 Click Next. The 92
- STEP 6 Select a VLAN in the 93
- STEP 8 Click OK. The 93
- VS Camera 96
- Smart Port Other Page 96
- Ports Setting 97
- Edit Smart Port Other Page 98
- VLAN ID 98
- Configuring System Time 99
- System Time Page 100
- Use Local Settings — 100
- Use SNTP Server — 100
- Greenwich Mean Time 100
- Defining System Time 101
- Defining SNTP Settings 103
- Defining SNTP Authentication 105
- SNTP Authentication Page 106
- Unchecked 106
- Add SNTP Authentication Page 106
- Configuring Device Security 108
- Authentication Page 109
- User Authentication Page 109
- Add Local User Page 109
- Edit Local User Page 110
- Defining Authentication 111
- Mapping Profiles Page 115
- Defining TACACS+ 117
- TACACS+ Page 118
- Connected 119
- Not Connected 119
- Add TACACS+ Server Page 119
- Modifying TACACS+ Settings 120
- Edit TACACS+ Server Page 121
- Defining RADIUS 122
- 802.1x — 123
- RADIUS Page 126
- Edit RADIUS Server Page 126
- Defining Access Methods 127
- Access Profiles Page 129
- Add Access Profile Page 129
- Secure Telnet (SSH) 130
- Profile Rules Page 132
- Add Profile Rule Page 134
- Modifying Profile Rules 135
- Edit Profile Rule Page 136
- Defining Traffic Control 137
- • Defining Storm Control 138
- • Defining Port Security 138
- Defining Storm Control 138
- Storm Control Page 139
- Modifying Storm Control 140
- • Forwarded 142
- • Discarded with no trap 142
- • Discarded with a trap 142
- Port Security Page 143
- Unlocked 143
- Modifying Port Security 145
- Defining 802.1x 146
- Defining Port Authentication 149
- 802.1X Port Authentication 150
- 802.1x Only 150
- MAC Only 150
- 802.1x & MAC 151
- Force-Authorized 151
- Force-Unauthorized 151
- Initialize 151
- Modifying 8021X Security 152
- Initialize — 154
- Shut Down 158
- Authenticated Hosts Page 158
- Authenticated Host Page 159
- Defining Access Control 160
- MAC Based ACL Page 161
- Shutdown 162
- Add MAC Based ACL Page 162
- • Source MAC Address 164
- • Source MAC Address: 166
- Defining IP Based ACL 168
- Add IP Based ACL Page 172
- IP Based ACL Page 172
- IP Address 173
- Wildcard Mask 173
- Modifying IP Based ACL 174
- ACL Page 175
- Adding an IP Based Rule 177
- Port Management 178
- Defining ACL Binding 179
- Modifying ACL Binding 180
- Defining DoS Prevention 181
- Martian Addresses 184
- Martian Addresses Page 184
- Add Martian Addresses Page 184
- Defining DHCP Snooping 185
- DHCP Snooping Properties Page 186
- DHCP Snooping Table 186
- DHCP Snooping Properties 187
- Checked 187
- Defining Trusted Interfaces 189
- Trusted Interface Table 190
- Edit Trusted Interface Page 191
- Binding Database Page 191
- Query By 192
- Query Results 193
- Dynamic 194
- IP Source Guard Properties 195
- IP Source 196
- Guard Properties Page 196
- IP Source Guard 197
- Properties Page 197
- STEP 2 Click Edit. The 198
- STEP 3 Define the fields 199
- TCAM Resources 200
- Retry Frequency 205
- ARP Inspection Trusted 206
- Interfaces Page 206
- Defining ARP Inspection List 207
- Static ARP Inspection Table 208
- Adding a Binding List entry 209
- Enabled VLAN Table 211
- Add ARP VLAN Settings Page 212
- ARP Inspection List Page 212
- Configuring Ports 213
- Port Settings 214
- Modifying Port Settings 215
- is disabled 216
- Configuring VLANs 219
- Defining VLAN Properties 220
- Disable 221
- Add VLAN Range Page 221
- Defining VLAN Membership 223
- Modifying VLAN Membership 224
- Edit Interface Status Page 225
- Untagged 225
- Forbidden 225
- VLAN To Port Page 226
- STEP 2 In the 228
- Defining Interface Settings 229
- Defining GVRP Settings 232
- Defining Protocol Groups 236
- Defining a Protocol Port 238
- Configuring IP Information 241
- IPv4 Interface Page 242
- Defining DHCP Relay 243
- Add DHCP Server Page 245
- DHCP Interfaces Page 246
- Add DHCP Interface Page 246
- Managing ARP 247
- Add ARP Page 249
- ARP Page 250
- Edit ARP Page 250
- Domain Name System 251
- Default Parameters 252
- DNS Server Details 253
- Add Host Name Page 255
- Host Name 255
- Defining Address Tables 256
- Defining Static Addresses 257
- Defining Dynamic Addresses 259
- Dynamic Page 260
- Query By Section 261
- IGMP Snooping 262
- IGMP Snooping Page 263
- Defining Multicast Group 266
- Multicast Group 268
- Edit Multicast Group Page 268
- Defining Multicast Forwarding 269
- Multicast Forward Page 270
- Excluded 270
- Unregistered Multicast Page 272
- Forwarding 273
- Filtering 273
- Unregistered Multicast 274
- Configuring Spanning Tree 275
- Defining STP Properties 276
- Interface Settings Page 278
- Disables 279
- Designated 281
- Alternate 281
- Disabled 281
- Edit Interface Settings Page 282
- Defining Rapid Spanning Tree 284
- RSTP Page 285
- Edit Rapid Spanning Tree Page 287
- Defining MSTP Properties 290
- Instance to VLAN Page 292
- Instance Settings Page 293
- MSTP Instance Settings Page 293
- MSTP Interface Table Page 297
- Managing QoS Statistics 302
- Policer Statistics 303
- Policer Statistics Page 303
- Add Policer Statistics 303
- Add Policer Statistics Page 304
- Aggregated 304
- Aggregate 305
- Policer Page 305
- Aggregate Policer Page 305
- Add Aggregate Policer 306
- Queues Statistics 307
- Statistics Page 308
- Adding Queues Statistics 309
- Defining General Settings 310
- CoS Page 311
- Advanced 311
- Edit Interface Priority Page 312
- Defining QoS Queue 313
- Queue Page 314
- Strict Priority 315
- Cos to Queue Page 316
- Mapping DSCP to Queue 318
- Bandwidth Page 319
- Edit Bandwidth Page 321
- Configuring VLAN Rate Limit 322
- Add VLAN Rate Limit Page 323
- Defining Advanced QoS Mode 324
- Advanced Mode 325
- DSCP Mapping Page 325
- DSCP Mapping 326
- Defining Class Mapping 327
- Defining Aggregate Policer 329
- Remark DSCP 332
- Policy Table Page 332
- Add QoS Policy Profile Page 333
- Edit QoS Policy Profile Page 336
- Policy Binding 338
- Policy Binding Page 338
- Add QoS Policy Binding Page 338
- Edit QoS Policy Binding Page 339
- Defining QoS Basic Mode 340
- Rewriting DSCP Values 341
- Configuring SNMP 343
- Configuring SNMP Security 344
- Defining SNMP Views 346
- Defining SNMP Users 348
- Modifying SNMP Users 350
- SNMP Communities Page 356
- Add SNMP Community Page 357
- Defining Trap Management 359
- • Trap Filtering 361
- Modifying SNMP Notifications 365
- No Authentication 367
- Authentication 367
- Filter Settings Page 368
- Included 368
- Cisco Discovery Protocol 370
- CDP Page 370
- CDP Status 371
- Voice VLAN 371
- STEP 2 Click Details. The 372
- Managing System Files 373
- Software Upgrade 374
- Save Configuration 375
- Configuration 376
- Copy Configuration 377
- Configuration File Page 378
- Copy Configuration File Page 378
- Active Image 379
- Active Image Page 380
- DHCP Auto Configuration 381
- Defining PoE Settings 382
- PoE Settings Page 383
- Managing System Logs 386
- Enabling System Logs 387
- Clearing Message Logs 389
- Viewing the System Flash Logs 390
- Remote Log Servers 391
- Add Syslog Server Page 393
- Emergency 393
- STEP4 Click Apply. The 394
- Viewing Statistics 397
- Viewing Ethernet Statistics 398
- No Refresh 399
- Ethernet Interface Page 399
- Etherlike Page 399
- GVRP Page 401
- EtherChannel 402
- EAP Page 403
- Managing RMON Statistics 405
- Viewing RMON Statistics 406
- • EtherChannel 406
- Configuring RMON History 408
- STEP 2 Select either 408
- RMON History Control Page 409
- Add RMON History Page 409
- Edit RMON History Page 411
- RMON History Table Page 411
- RMON History 412
- Control Page 412
- RMON Events Page 413
- Defining RMON Alarms 417
- RMON Alarms Page 418
- Add RMON Alarm Page 420
- EtherChannels 420
- Absolute 420
- Modifying RMON Alarm Settings 421
- Edit RMON Alarm Page 422
- Aggregating Ports 424
- • Configuring LACP 425
- Modifying LAG Membership 426
- Settings 427
- EtherChannel Settings Page 428
- Edit EtherChannel Page 429
- Configuring LACP 431
- LACP Page 432
- Edit LACP Page 433
- Managing Device Diagnostics 434
- Ethernet Ports 435
- No Cable 435
- Open Cable 435
- Short Cable 435
- Copper Cable Extended Feature 436
- GBIC Uplink Page 437
- GBIC Uplink Ports 437
- SPAN (Port 438
- Mirroring) 438
- Port Mirroring) 438
- Monitoring CPU Utilization 440
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