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Managing Access Server Security 22-1
Chapter 22
Managing Access Server Security
Overview
Introduction
The DECserver Network Access Software (DNAS) supports the following
authentication services:
• RADIUS
• SecurID
• Local User Accounts
• Kerberos V4
In This Chapter
This chapter contains the following topics:
• Security Type Descriptions
• Common Terminology Across Security Realms
• Managing Kerberos
• Managing RADIUS
• Managing SecurID
• Managing Local Access Server Security
• Determining Security Configuration
• Managing Dial-Up Access Security with AUTOLINK and AUTOLINK
Authentication
• Specifying Other Security Features
- DIGITAL NetRider 1
- Network Access Server 1
- Management 1
- Contents 3
- 3 User Interface 4
- 4 Managing Load Hosts 5
- 8 Managing AppleTalk 9
- 14 Configuring LPD Printers 15
- (TN3270) 18
- 20 Managing IPX 20
- 21 Managing Dial Services 21
- 23 Accounting 24
- Glossary 25
- Conventions 28
- Associated Documents 29
- Correspondence 31
- Chapter 1 33
- DNAS Management 33
- Configuration Tasks 34
- System Management Tasks 35
- User Tasks 36
- Memory Types 37
- Power Loss 37
- Chapter 2 39
- Management Tools 39
- Access Server Commands 40
- User Groups 41
- Command Definitions 41
- Privileged Commands 42
- HELP TUTORIAL Command 43
- HELP Command 43
- Console Port 44
- Remote Console Port 45
- Network Control Program (NCP) 46
- Telnet Remote Console 49
- 2-12 Management Tools 50
- Access Server Manager 51
- Chapter 3 53
- User Interface 53
- Command Groups and Menus 54
- Using Command Groups 55
- Executing a Command Group 56
- Displaying a Command Group 56
- Purging a Command Group 56
- Using Menus 57
- Menu Windows 58
- Defining Menus 60
- Main Menu Display 61
- Defining Menu Choices 61
- Displaying a Selected Menu 62
- Exiting from a Menu 63
- Displaying a Menu Definition 63
- Chapter 4 65
- Managing Load Hosts 65
- Load Host Procedures 66
- DSV$CONFIGURE 67
- ADD Command 68
- MODIFY and SET Commands 69
- DELETE Command 69
- LIST and SHOW Commands 70
- CONNECT and USE Commands 70
- DSVCONFIG 73
- Using a BOOTP/TFTP Server 74
- Remote Connection Password 75
- Upline Dumping 76
- Terminal Server Manager (TSM) 77
- Chapter 5 79
- Using the INITIALIZE Command 82
- Updating Flash RAM 83
- Local> INITIALIZE DISABLE 84
- NCP Initialization Commands 85
- NCP Reference 85
- Booting from the Network 86
- Boot Command Options 88
- Chapter 6 91
- LAT Characteristics 92
- Command To Use 94
- ANNOUNCEMENTS Characteristic 95
- CIRCUIT TIMER Characteristic 96
- IDENTIFICATION Characteristic 97
- Keepalive Timer Example 98
- Introduction 100
- Default Access Server Name 100
- NODE LIMIT Characteristic 101
- Access SERVER NUMBER Values 102
- PASSCHECK Characteristic 103
- QUEUE LIMIT Characteristic 104
- RETRANSMIT LIMIT Values 105
- RESPONDER Characteristic 106
- Service Groups 108
- Chapter 7 109
- Setting the Internet Address 111
- Displaying the DNS Counters 117
- Field Description 118
- Changing the Time Limit 120
- Changing the Retry Limit 120
- 192.33.4.12 ROOT 121
- 99.99.99.99 LOCAL 122
- Configuring a Default Gateway 124
- 255.255.255.0 125
- Defining an ARP Entry 126
- What the Timer Does 127
- Setting the Timer 127
- Disabling the Timer 127
- Setting Timer Retries 127
- Using the SHOW Command 129
- BOOTP Server Configuration 133
- Learning Operation 133
- Local> LIST INTERNET 134
- Description 135
- BOOTP and DHCP Differences 135
- DHCP Client Operation 136
- DHCP Proxy Operation 137
- Enabling and Disabling DHCP 138
- Displaying the DHCP Setting 138
- Configuring Default Values 138
- What Does WINS Do? 139
- What Is WINS Autoconfigure? 139
- Operation 139
- Assigning WINS Addresses 140
- Chapter 8 143
- Managing AppleTalk 143
- Overview 143
- AppleTalk Address Format 144
- Enabling AppleTalk 144
- Disabling AppleTalk 145
- 8-4 Managing AppleTalk 146
- Commands 147
- Displaying AppleTalk Counters 148
- Managing AppleTalk 8-7 149
- 8-8 Managing AppleTalk 150
- AARP Values 151
- Displaying AppleTalk Status 152
- Managing AppleTalk 8-11 153
- Displaying AppleTalk Routes 154
- Managing AppleTalk 8-13 155
- Managing AppleTalk 8-15 157
- Chapter 9 159
- AUTOBAUD 164
- CHARACTER SIZE 165
- STOP BITS 166
- Flow Control Types 168
- XON/XOFF 168
- FLOW CONTROL Direction 170
- Specifying DSRLOGOUT 171
- Specifying LONGBREAK LOGOUT 171
- Specifying INACTIVITY LOGOUT 172
- Chapter 10 173
- Configuring Modem Signals 173
- DTE/DCE Device Configuration 174
- Modem Signals Description 177
- Computer Interface 179
- Local> LOGOUT PORT 5 180
- Local> LOGOUT PORT 11 180
- Specifying SIGNAL SELECT 181
- Specifying SIGNAL CHECK 182
- Specifying DTRWAIT 183
- Specifying RING 184
- Specifying ALTERNATE SPEED 185
- Specifying DIALUP 186
- Sample Modem Configurations 187
- MODEM CONTROL Sequences 190
- Disconnecting 191
- Chapter 11 195
- Managing Users 196
- Managing Sessions 196
- Sample Network Configuration 198
- Specifying AUTOCONNECT 199
- Specifying AUTOPROMPT 200
- Specifying Failover 201
- Configuring Port Queuing 201
- Reference 206
- How to Configure 207
- Logging In with Multisessions 209
- Disable Switch Character 210
- Buffer Size 211
- Profiles Types 212
- Profile Characteristics 212
- Characteristics 215
- Specifying CHARACTER SIZE 216
- Telnet Keymapping Functions 217
- Specifying AUTOFLUSH 218
- Specifying AUTOSYNCH 218
- Specifying FLOW CONTROL 219
- Service Permissions Access 224
- Access Command Variables 226
- Specifying the Port USERNAME 228
- Defining the Break Key 230
- Specifying BROADCAST 231
- Specifying LOSS NOTIFICATION 232
- Specifying Message Codes 233
- Specifying VERIFICATION 233
- Specifying Lock 233
- Specifying User Groups 235
- Local> SET PORT GROUPS 5 236
- Local> 239
- CHANGE PORT 5 SESSION LIMIT 6 239
- Displaying Session Status 242
- Terminating Sessions 245
- Chapter 12 247
- Configuration Parameters 248
- Assigning a Service Name 249
- Enabling Announcements 249
- Assigning a Port Name 250
- Services 252
- Verifying the LAT Service 261
- Displaying Services Status 264
- Displaying Services Summary 266
- Chapter 13 269
- Sample Device Configurations 270
- Sample Configuration 273
- Procedure 277
- Configuring a Telnet Listener 279
- Specifying Character Size 281
- Displaying Telnet Listeners 283
- Removing a Telnet Listener 284
- Reassigning a Port 285
- When To Use Raw TCP 287
- Configuring Raw TCP 287
- Example: Raw TCP Display 288
- Chapter 14 289
- Configuring LPD Printers 289
- LPD Operation 290
- Configuring LPD Printers 14-3 291
- Configuring LPD 293
- Setting Port Characteristics 294
- Printer Configuration Example 295
- Chapter 15 297
- Changing the MTU 303
- Fragmentation 303
- Terminal or SLIP Host 304
- Prerequisites 307
- Establishing a SLIP Session 308
- Compressed SLIP 309
- Displaying SLIP Counters 310
- Disabling SLIP 311
- Chapter 16 313
- Configuring for SNMP Access 313
- Supported SNMP Features 314
- Supported MIBs 315
- Supported MIB Variables 315
- Enabling and Disabling SNMP 317
- Default Community Name PUBLIC 317
- Sample SNMP Configuration 320
- Removing Community Names 320
- Configuring the NMS 322
- Chapter 17 323
- Managing the Access Server 323
- Reducing Memory Usage 325
- Specifying the Prompt 332
- Displaying Port Counters 347
- Displaying Port Status 349
- Displaying Port Summary 351
- Chapter 18 353
- Emulation (TN3270) 353
- Supported ASCII Terminals 354
- 3278 Keyboards 355
- Server-Specific Keyboard Maps 355
- Setting Up an ASCII Terminal 356
- Terminal Setup Parameters 357
- IBM Host Communications 358
- Status Line Indicator Display 360
- Limiting NVRAM Usage 370
- TN3270 Port Characteristics 372
- SHOW Commands 373
- Chapter 19 375
- Protocol (PPP) Ports 375
- Using the CONNECT PPP Command 378
- ATCP Characteristics 384
- Displaying PPP Status 386
- Displaying IPCP Status 388
- Displaying ATCP Status 390
- Displaying PPP Counters 392
- Displaying IPCP Counters 394
- Displaying ATCP Counters 396
- Chapter 20 399
- Managing IPX 399
- IPX Description 400
- Managing IPX 20-3 401
- Getting Started 402
- Software Requirements 403
- Hardware Requirements 403
- Setting Up Your PC 404
- Enabling IPX 405
- 20-10 Managing IPX 408
- Local> CHANGE PORT 408
- LCP AUTHENTICATION DISABLE 408
- Port PPP IPX Commands for LCP 409
- 20-12 Managing IPX 410
- Server IPX Commands 411
- 20-14 Managing IPX 412
- Modem Considerations 413
- 20-16 Managing IPX 414
- Novell Operation 415
- 20-18 Managing IPX 416
- Verifying Configuration 417
- Disabling IPX 418
- Frame Types 419
- Using the SHOW command 420
- IPX Characteristics Display 420
- Managing IPX 20-23 421
- Displaying IPX Status 422
- Displaying IPX Counters 423
- 20-26 Managing IPX 424
- Managing IPX 20-27 425
- Displaying IPX Routes 426
- Resetting Counters 427
- Chapter 21 429
- Managing Dial Services 429
- Dial Services Command Groups 430
- Server Configuration Display 431
- Defining a Dialer Script 432
- 21-6 Managing Dial Services 434
- Defining the Dialer Service 437
- Showing Dialer Service Status 438
- Displaying Dialer Counters 440
- Modifying the Dialer Service 440
- Managing Dial Services 21-13 441
- 21-14 Managing Dial Services 442
- Framed Dial Requests 444
- Managing Dial Services 21-17 445
- Chapter 22 447
- Security Type Descriptions 448
- SecurID 449
- User Accounts 449
- Security Server 451
- UDP Ports 451
- Managing Kerberos 452
- User Authentication Procedure 456
- User Authentication Counters 457
- Managing RADIUS 459
- Optional Setup for RADIUS 460
- RADIUS User Authorizations 461
- Setting User Permissions 462
- Additional RADIUS Attributes 463
- Managing SecurID 469
- Minimal Setup for SecurID 470
- Optional Setup for SecurID 470
- SecurID User Authorizations 471
- Defining the Realm 473
- Example: Showing SecurID 475
- CHARACTERISTICS command: 475
- Displaying Security Summary 476
- Showing Security Counters 477
- AUTOLINK Authentication 478
- Setting AUTOLINK Timers 480
- Timeouts 481
- Using a Login Script 481
- Specifying Passwords 483
- Specifying PASSWORD LIMIT 484
- Chapter 23 7 487
- Accounting 487
- Accounting Description 488
- What Events Are Logged? 489
- Event Field Descriptions 490
- Accounting 23-5 491
- 23-6 Accounting 492
- Accounting 23-7 493
- 23-8 Accounting 494
- When Events Are Logged 495
- Password Modified Events 496
- Managing Accounting 497
- 23-12 Accounting 498
- Accounting 23-13 499
- Accounting Characteristics: 499
- Displaying the Accounting Log 500
- Appendix A 503
- Glossary-2 506
- /etc/bootptab 506
- Glossary-8 512
- Glossary-18 522
- Index-1 523
- Index-3 525
- Index-5 527
- Index-7 529
- Index-9 531
- Index-10 532
- Index-11 533
- Index-12 534
- Index-13 535
- Index-14 536
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