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2-14
Cisco ASA 5500 Series Configuration Guide using the CLI
Chapter 2 Getting Started
Factory Default Configurations
Figure 2-2 ASA 5505 Transparent Mode
firewall transparent
interface Ethernet 0/0
switchport access vlan 2
no shutdown
interface Ethernet 0/1
switchport access vlan 1
no shutdown
interface Ethernet 0/2
switchport access vlan 1
no shutdown
interface Ethernet 0/3
switchport access vlan 1
no shutdown
interface Ethernet 0/4
switchport access vlan 1
no shutdown
interface Ethernet 0/5
switchport access vlan 1
no shutdown
interface Ethernet 0/6
switchport access vlan 1
no shutdown
interface Ethernet 0/7
switchport access vlan 1
no shutdown
interface bvi 1
ip address 192.168.1.1 255.255.255.0
interface vlan2
nameif outside
security-level 0
bridge-group 1
no shutdown
interface vlan1
nameif inside
security-level 100
bridge-group 1
no shutdown
http server enable
http 192.168.1.0 255.255.255.0 inside
dhcpd address 192.168.1.5-192.168.1.254 inside
192.168.1.3
BVI 1 IP
192.168.1.1
192.168.1.5
(from ASA DHCP)
inside VLAN 1 (Ethernet 0/1-0/7)
ASDM
outside VLAN 2 (Ethernet 0/0)
Internet
IP traffic
Internet Gateway Router
330619
- Guide using the CLI 1
- CONTENTS 3
- 2 Getting Started 2-1 4
- 3 Configuring Interfaces 8
- Contents 10
- 4 Configuring Basic Settings 11
- 11 Configuring DHCP 11-1 12
- 13 Configuring Objects 13-1 12
- 6 Configuring IP Routing 16
- 21 Routing Overview 21-1 16
- 23 Defining Route Maps 23-1 17
- 24 Configuring OSPF 24-1 17
- 25 Configuring RIP 25-1 18
- 27 Configuring EIGRP 27-1 19
- 29 Information About NAT 29-1 21
- 31 Configuring Twice NAT 31-1 22
- 9 Configuring Access Control 24
- 54 Configuring QoS 54-1 39
- 14 Configuring Modules 41
- 16 Configuring VPN 46
- 77 Configuring Logging 77-1 57
- 79 Configuring SNMP 79-1 58
- 18 System Administration 60
- 82 Troubleshooting 82-1 61
- 19 Reference 62
- About This Guide 65
- Conventions 66
- Getting Started with the ASA 69
- VPN Specifications 71
- New Features 71
- Released: February 28, 2012 72
- AAA Features 73
- Released: October 31, 2012 74
- • Secondary subnets 75
- Remote Access Features 75
- Monitoring Features 75
- Released: June 18, 2012 76
- New Features 78
- Released: January 9, 2012 79
- Troubleshooting Features 81
- Released: June 20, 2011 82
- Released: May 23, 2011 86
- Interface Features 88
- Routing Features 88
- Released: January 31, 2011 89
- Inspection Features 93
- Firewall Functional Overview 94
- Applying QoS Policies 96
- Enabling Threat Detection 96
- Firewall Mode Overview 97
- Stateful Inspection Overview 97
- VPN Functional Overview 98
- Security Context Overview 99
- Security Context Overview 100
- Getting Started 101
- Detailed Steps 103
- Examples 105
- Starting ASDM 106
- Starting ASDM 107
- Using ASDM in Demo Mode 109
- Limitations 111
- Saving Configuration Changes 116
- Viewing the Configuration 118
- Managing Feature Licenses 121
- ASA 5505 122
- ASA 5510 123
- ASA 5520 124
- ASA 5540 125
- ASA 5550 126
- ASA 5580 127
- ASA 5512-X 128
- ASA 5515-X 128
- ASA 5525-X 129
- ASA 5545-X 130
- ASA 5555-X 131
- ASA 5585-X with SSP-10 132
- ASA 5585-X with SSP-20 133
- General Licenses 134
- Firewall Licenses 134
- VPN Licenses 135
- License Notes 136
- Mobile Posture Support 137
- Preinstalled License 141
- Permanent License 141
- Time-Based Licenses 141
- Stacking Time-Based Licenses 143
- Time-Based License Expiration 143
- Failover and Shared Licenses 145
- How Failover Licenses Combine 148
- No Payload Encryption Models 150
- Licenses FAQ 150
- Configuring Licenses 152
- Obtaining an Activation Key 153
- Limitations and Restrictions 154
- Configuring a Shared License 155
- Monitoring Licenses 158
- Monitoring the Shared License 164
- Feature History for Licensing 166
- Configuring the Firewall Mode 173
- Transparent Firewall Network 174
- Bridge Groups 174
- Allowing Layer 3 Traffic 175
- Allowed MAC Addresses 175
- BPDU Handling 176
- MAC Address vs. Route Lookups 176
- Setting the Firewall Mode 180
- Configuring ARP Inspection 183
- Monitoring ARP Inspection 184
- Firewall 185
- Adding a Static MAC Address 187
- Firewall Mode Examples 189
- Figure 4-3 Inside to Outside 190
- Firewall Mode Examples 191
- Figure 4-6 Outside to Inside 193
- Figure 4-7 DMZ to Inside 194
- Figure 4-12 Outside to Inside 199
- Context Configuration Files 202
- Valid Classifier Criteria 203
- Classification Examples 204
- Cascading Security Contexts 206
- System Administrator Access 207
- Context Administrator Access 208
- Resource Limits 208
- Default Class 209
- Class Members 210
- Default MAC Address 211
- Failover MAC Addresses 212
- MAC Address Format 212
- Configuring Multiple Contexts 214
- Restoring Single Context Mode 216
- Managing Security Contexts 223
- Removing a Security Context 224
- Changing the Admin Context 224
- Reloading a Security Context 226
- Monitoring Security Contexts 227
- Table 5-2 show context Fields 228
- Viewing Resource Allocation 229
- Viewing Resource Usage 232
- (ASA 5510 and Higher) 243
- Auto-MDI/MDIX Feature 244
- Management Interface 244
- Redundant Interfaces 246
- EtherChannels 247
- Load Balancing 249
- EtherChannel MAC Address 249
- Failover Guidelines 252
- EtherChannel Guidelines 252
- Default Connector Type 254
- Default MAC Addresses 254
- Detailed Steps (Single Mode) 255
- CustomerA Context 261
- CustomerB Context 262
- Configuring an EtherChannel 269
- Customizing the EtherChannel 271
- Monitoring Interfaces 275
- VLAN MAC Addresses 282
- Power over Ethernet 282
- Monitoring Traffic Using SPAN 282
- Configuring VLAN Interfaces 284
- Trunk Port Example 290
- (Routed Mode) 293
- Dual IP Stack (IPv4 and IPv6) 294
- Information About the MTU 301
- Configuring IPv6 Addressing 303
- Information About IPv6 304
- Modified EUI-64 Interface IDs 305
- (Transparent Mode) 311
- Security Levels 312
- Configuring Bridge Groups 317
- Unsupported Commands 326
- Configuring Basic Settings 333
- Changing the Enable Password 336
- Setting the Hostname 336
- Setting the Date and Time 337
- Configuring the DNS Server 345
- Monitoring DNS Cache 346
- Feature History for DNS Cache 346
- Configuring DHCP 347
- Configuring a DHCP Server 348
- Enabling the DHCP Server 349
- Configuring DHCP Options 350
- DHCP Monitoring Commands 354
- Feature History for DHCP 354
- Configuring Dynamic DNS 355
- Configuring DDNS 356
- DDNS Monitoring Commands 360
- Feature History for DDNS 360
- Configuring Objects 363
- Information About Objects 364
- Configuring a Service Object 366
- Configuring Object Groups 368
- Adding a Network Object Group 369
- Adding a Service Object Group 370
- Nesting Object Groups 372
- Monitoring Objects and Groups 373
- Creating a Regular Expression 374
- Context Mode Guidelines 378
- Access List Types 383
- Access Control Entry Order 384
- Access Control Implicit Deny 385
- Where to Go Next 386
- Adding EtherType Access Lists 397
- Adding a Standard Access List 401
- Adding Standard Access Lists 403
- Monitoring Access Lists 404
- Adding a Webtype Access List 407
- Using Webtype Access Lists 408
- Adding an IPv6 Access List 417
- Configuring IPv6 Access Lists 420
- Adding IPv6 Access Lists 421
- Monitoring IPv6 Access Lists 423
- Managing Deny Flows 429
- Monitoring Deny Flows 431
- Managing Deny Flows 432
- Configuring IP Routing 433
- Routing Overview 435
- Switching 436
- Path Determination 436
- Supported Route Types 436
- Static Versus Dynamic 437
- Single-Path Versus Multipath 437
- Flat Versus Hierarchical 437
- Next Hop Selection Process 438
- Displaying the Routing Table 440
- Backup Routes 442
- Dynamic Routing and Failover 443
- Features That Support IPv6 443
- IPv6-Enabled Commands 444
- Disabling Proxy ARPs 445
- Disabling Proxy ARPs 446
- Configuring a Static Route 449
- Defining Route Maps 457
- Permit and Deny Clauses 458
- Match and Set Clause Values 458
- Defining a Route Map 460
- Customizing a Route Map 460
- Configuring OSPF 463
- Customizing OSPF 466
- Configuring OSPF NSSA 473
- Restarting the OSPF Process 476
- Monitoring OSPF 478
- Feature History for OSPF 479
- Feature History for OSPF 480
- Configuring RIP 481
- Routing Update Process 482
- RIP Routing Metric 482
- RIP Stability Features 482
- RIP Timers 482
- Customizing RIP 484
- Configuring the RIP Version 485
- Filtering Networks in RIP 488
- Enabling RIP Authentication 489
- Restarting the RIP Process 490
- Monitoring RIP 491
- Configuration Example for RIP 491
- Feature History for RIP 491
- Feature History for RIP 492
- Configuring Multicast Routing 493
- Stub Multicast Routing 494
- PIM Multicast Routing 494
- Multicast Group Concept 494
- Enabling Multicast Routing 495
- Customizing Multicast Routing 496
- Configuring IGMP Features 497
- Configuring PIM Features 501
- Filtering PIM Neighbors 504
- Configuring EIGRP 509
- Customizing EIGRP 512
- Defining an EIGRP Neighbor 518
- Filtering Networks in EIGRP 520
- Disabling EIGRP Split Horizon 524
- Monitoring EIGRP 525
- Feature History for EIGRP 527
- Feature History for EIGRP 528
- Neighbor Reachable Time 541
- Router Advertisement Messages 541
- Configuring DAD Settings 547
- Configuring the IPv6 Prefix 549
- Information About NAT 555
- NAT Terminology 556
- NAT Types 557
- NAT Types 558
- Dynamic NAT 562
- Information About Dynamic NAT 563
- Dynamic PAT 564
- Identity NAT 565
- 209.165.201.1 209.165.201.1 566
- Inside Outside 566
- 209.165.201.2 209.165.201.2 566
- NAT in Routed Mode 567
- NAT in Transparent Mode 567
- NAT for VPN 568
- NAT for VPN 569
- How NAT is Implemented 570
- Information About Twice NAT 571
- How NAT is Implemented 572
- NAT Rule Order 574
- NAT Interfaces 575
- Routing NAT Packets 575
- Mapped Addresses and Routing 576
- Too late 577
- DNS and NAT 578
- DNS and NAT 579
- Configuring Dynamic NAT 586
- Configuring Identity NAT 594
- Monitoring Network Object NAT 596
- (Static NAT) 598
- One-to-Many) 599
- Configuring Twice NAT 607
- Prerequisites for Twice NAT 608
- Configuring Twice NAT 619
- Monitoring Twice NAT 630
- Feature History for Twice NAT 634
- Modular Policy Framework 637
- Policy Framework 639
- Feature Directionality 640
- Default Class Maps 646
- port_num port_num} 651
- Configuring Access Control 669
- Configuring Access Rules 671
- Implicit Permits 672
- Implicit Deny 673
- Inbound and Outbound Rules 673
- Management Access Rules 675
- Allowing MPLS 676
- Monitoring Access Rules 678
- Information About AAA 681
- Information About AAA 682
- Information About Accounting 683
- Summary of Server Support 683
- RADIUS Server Support 684
- TACACS+ Server Support 685
- RSA/SDI Server Support 685
- NT Server Support 686
- Kerberos Server Support 686
- LDAP Server Support 686
- LDAP Server Types 687
- Using User Login Credentials 689
- Using Certificates 689
- Configuring AAA 690
- Task Flow for Configuring AAA 691
- Managing User Passwords 705
- Changing User Passwords 707
- Using Local Authentication 708
- Using RADIUS Authentication 709
- Using LDAP Authentication 709
- Monitoring AAA Servers 710
- Flexibility 715
- Deployment Scenarios 716
- Redundant 717
- Inside Enterprise 719
- AD Servers 719
- AD Agent 719
- WAN / LAN 719
- Prerequisite 722
- Task Flow in the ASA 722
- Configuring Identity Options 726
- Example 2 736
- • Monitoring Groups, page 26 737
- Monitoring AD Agents 738
- Monitoring Groups 738
- Configuring Management Access 741
- Configuring Telnet Access 743
- Using a Telnet Client 744
- Configuring SSH Access 744
- Using an SSH Client 745
- Configuring CLI Parameters 746
- Configuring a Login Banner 747
- Customizing a CLI Prompt 748
- Changing the Console Timeout 749
- Configuring ICMP Access 750
- Additional Guidelines 753
- Command) 759
- Recovering from a Lockout 771
- AAA Performance 775
- ASA Authentication Prompts 777
- Static PAT and HTTP 778
- Feature History for AAA Rules 795
- Configuring ActiveX Filtering 798
- Caching Server Addresses 807
- Filtering HTTP URLs 807
- Enabling HTTP Filtering 808
- Filtering HTTPS URLs 809
- Filtering FTP Requests 810
- Information About WCCP 815
- Enabling WCCP Redirection 817
- WCCP Monitoring Commands 818
- Feature History for WCCP 818
- Public Key Cryptography 820
- Certificate Scalability 820
- Key Pairs 820
- Trustpoints 821
- Revocation Checking 822
- The Local CA 824
- Configuring Key Pairs 827
- Removing Key Pairs 828
- Configuring Trustpoints 828
- Enabling the Local CA Server 840
- Debugging the Local CA Server 844
- Disabling the Local CA Server 844
- Deleting the Local CA Server 844
- Configuring the Issuer Name 846
- Configuring the CRL Lifetime 848
- Downloading CRLs 851
- Storing CRLs 852
- Adding and Enrolling Users 854
- Renewing Users 856
- Restoring Users 857
- Removing Users 857
- Revoking Certificates 858
- Table 42-2 Protocol Keywords 873
- Protocols 877
- How DNS Rewrite Works 878
- Configuring DNS Rewrite 879
- DNS Inspection 881
- FTP Inspection 887
- FTP Inspection 888
- HTTP Inspection 892
- ICMP Inspection 896
- ICMP Error Inspection 897
- Instant Messaging Inspection 897
- IP Options Inspection 900
- IPsec Pass Through Inspection 902
- IPv6 Inspection 903
- NetBIOS Inspection 904
- PPTP Inspection 906
- TFTP Inspection 910
- H.323 Inspection 913
- H.323 Inspection Overview 914
- How H.323 Works 914
- Monitoring H.225 Sessions 919
- Monitoring H.245 Sessions 920
- Monitoring H.323 RAS Sessions 920
- MGCP Inspection 921
- MGCP Inspection 922
- RTSP Inspection 925
- Using RealPlayer 926
- Restrictions and Limitations 926
- SIP Inspection 929
- SIP Inspection 930
- Skinny (SCCP) Inspection 935
- Supporting Cisco IP Phones 936
- Skinny (SCCP) Inspection 940
- Directory Protocols 941
- SQL*Net Inspection 942
- Sun RPC Inspection 943
- Managing Sun RPC Services 944
- Sun RPC Inspection 946
- Application Protocols 947
- GTP Inspection 949
- GTP Inspection 950
- RADIUS Accounting Inspection 955
- RSH Inspection 957
- SNMP Inspection 957
- XDMCP Inspection 958
- XDMCP Inspection 959
- Communications Proxy Features 975
- Phone Proxy Functionality 983
- Cisco Unified IP Phones 985
- DNS Lookup Prerequisites 989
- Access List Rules 989
- NAT and PAT Prerequisites 990
- End-User Phone Provisioning 994
- Configuring the Phone Proxy 996
- Configuring the Phone Proxy 999
- Creating the CTL File 1000
- Prerequisites 1001
- What to Do Next 1001
- Using an Existing CTL File 1002
- What To Do Next 1004
- Configuring Your Router 1009
- Note Using the show logging 1013
- IP Phone Registration Failure 1014
- SSL Handshake Failure 1021
- Certificate Validation Errors 1022
- Audio Problems with IP Phones 1023
- Saving SAST Keys 1023
- Publisher 1025
- Different Servers 1028
- Server on Different Servers 1030
- Example 6: VLAN Transversal 1033
- LS Proxy for Encrypted Voice 1037
- Inspection 1037
- Figure 49-1 TLS Proxy Flow 1038
- CTL Client Overview 1039
- Licensing for the TLS Proxy 1041
- Creating an Internal CA 1046
- Monitoring the TLS Proxy 1051
- OML HTTP etc 1056
- Mobile Data 1057
- Network (GPRS 1057
- Data Channel) 1057
- Advantage Proxy Only 1058
- Mobility Advantage 1065
- Proxy Only 1066
- Enterprise Y Firewall omitted 1071
- Director 1072
- XMPP Federation Deployments 1073
- Federation 1077
- Installing Certificates 1078
- Tickets and Passwords 1091
- UC-IME server passes 1092
- Call Fallback to the PSTN 1093
- Basic Deployment 1094
- Off Path Deployment 1095
- Only UC-IME calls pass 1096
- Guidelines and Limitations 1097
- Guidelines and Limitations 1098
- Guidelines 1105
- Procedure 1105
- Creating the TLS Proxy 1112
- 192.168.10.30 1118
- Outside Cisco UCM address 1118
- 209.165.200.228 1118
- ASA inside interface 1118
- 192.168.10.1 1118
- Compatibility 1130
- TCP Sequence Randomization 1131
- TCP Normalization 1131
- TCP State Bypass 1131
- Default Settings 1133
- Table 53-1 tcp-map Commands 1135
- Example: 1140
- Monitoring TCP State Bypass 1142
- Configuring QoS 1145
- Supported QoS Features 1146
- What is a Token Bucket? 1146
- Information About Policing 1147
- How QoS Features Interact 1148
- Restrictions 1151
- Configuring the Service Rule 1157
- Monitoring QoS 1159
- Feature History for QoS 1162
- Database Files 1167
- Database Traffic Types 1167
- Enabling DNS Snooping 1174
- Recommended Configuration 1177
- Other Configuration Examples 1184
- Where to Go Next 1185
- Configuring Threat Detection 1187
- Using Protection Tools 1207
- Configuring the Fragment Size 1208
- Blocking Unwanted Connections 1208
- Configuring IP Audit 1209
- IP Audit Signature List 1210
- that is 1212
- Configuring Modules 1219
- Operating Modes 1222
- Cisco ASA SSC-05 1228
- Monitoring the ASA IPS module 1240
- Resetting the Password 1243
- Shutting Down the Module 1244
- Configuring the ASA CX Module 1247
- Initial Configuration 1249
- Monitoring the ASA CX Module 1258
- Showing Module Statistics 1259
- Monitoring Module Connections 1260
- Capturing Module Traffic 1263
- General Recovery Procedures 1263
- Debugging the Module 1265
- Information About the CSC SSM 1269
- Prerequisites for the CSC SSM 1273
- Configuring the CSC SSM 1275
- Connecting to the CSC SSM 1276
- Configuring the CSC SSM 1277
- Monitoring the CSC SSM 1281
- Additional References 1286
- Configuring High Availability 1287
- Failover System Requirements 1290
- Failover Link 1291
- Stateful Failover Link 1292
- Scenario 1—Not Recommended 1294
- Scenario 2—Recommended 1294
- Scenario 3—Recommended 1295
- Scenario 4—Recommended 1295
- Stateless (Regular) Failover 1297
- Stateful Failover 1298
- Auto Update Process Overview 1300
- Failover Health Monitoring 1302
- Interface Monitoring 1303
- Failover Times 1304
- Failover Messages 1304
- Failover Messages 1305
- Command Replication 1309
- Failover Triggers 1310
- Failover Actions 1310
- Table 62-2 Failover Behavior 1311
- Firewall Mode Guidelines 1313
- IPv6 Guidelines 1313
- Model Guidelines 1313
- Configuring the Primary Unit 1314
- Configuring Failover Criteria 1320
- Controlling Failover 1322
- Disabling Failover 1323
- Restoring a Failed Unit 1323
- Figure 63-1 ASR Example 1343
- Remote Command Execution 1345
- Changing Command Modes 1346
- Configuring VPN 1351
- Configuring IPsec and ISAKMP 1353
- IPsec Overview 1354
- ISAKMP and IKE Overview 1354
- Remote Access IPsec VPNs 1355
- Configuring ISAKMP 1360
- Configuring ISAKMP 1362
- Enabling IPsec over NAT-T 1366
- Using NAT-T 1367
- Configuring IPsec 1371
- Defining Crypto Maps 1372
- Configuring IPsec 1373
- Crypto Map 1 1376
- Crypto Map 2 1376
- Using Interface Access Lists 1378
- Changing IPsec SA Lifetimes 1381
- Using Dynamic Crypto Maps 1383
- Configuring L2TP over IPsec 1391
- Tunnel mode 1392
- Transport mode 1392
- Understanding Load Balancing 1414
- Implementing Load Balancing 1415
- Eligible Platforms 1416
- Eligible Clients 1416
- VPN Load-Balancing Algorithm 1416
- Configuring Load Balancing 1419
- IP Address Pool Exhaustion 1422
- Unique IP Address Pools 1422
- Viewing Load Balancing 1423
- • Group Policies, page 67-36 1427
- Connection Profiles 1428
- Connection Profiles 1429
- Maximum Connection Profiles 1432
- Applying Customization 1450
- AnyConnect Client 1460
- Group Policies 1462
- Default Group Policy 1463
- Configuring Group Policies 1465
- Configuring DHCP Intercept 1478
- Configuring an Idle Timeout 1480
- Configuring IP Phone Bypass 1480
- Configuring LEAP Bypass 1481
- Configuring Address Pools 1488
- Configuring Firewall Policies 1489
- Cisco Integrated Firewall 1492
- Cisco Security Agent 1492
- No Firewall 1492
- Custom Firewall 1493
- Zone Labs Firewalls 1493
- Sygate Personal Firewalls 1493
- Specifying a “Deny” Message 1497
- Specifying the User Home Page 1499
- Configuring Auto-Signon 1499
- Applying a URL List 1500
- Specifying HTTP Compression 1502
- Specifying the SSO Server 1503
- Configuring User Attributes 1505
- Configuring Inheritance 1507
- Configuring Access Hours 1507
- Configuring the Idle Timeout 1508
- Applying an ACL Filter 1508
- Configuring AAA Addressing 1520
- Configuring DHCP Addressing 1521
- Configuring an Address Pool 1533
- Adding a User 1534
- Defining a Tunnel Group 1535
- Creating a Dynamic Crypto Map 1536
- Licensing Requirements 1542
- Licensing Requirements 1543
- Prerequisites for NAC 1544
- Configuring a NAC Policy 1548
- Specifying the Mode 1561
- Configuring IPsec Over TCP 1562
- Comparing Tunneling Options 1563
- Specifying the Tunnel Group 1565
- Specifying the Trustpoint 1565
- Configuring Split Tunneling 1566
- Configuring Remote Management 1567
- • Authentication Options 1568
- EasyVPN Hardware Client 1568
- Authentication Options 1570
- Configuring the PPPoE Client 1571
- Enabling PPPoE 1573
- Clearing the Configuration 1575
- Using Related Commands 1575
- Using Related Commands 1576
- Summary of the Configuration 1577
- Configuring Interfaces 1578
- Outside Interface 1579
- Creating an IKEv2 Proposal 1582
- Configuring an ACL 1583
- Step 2 Save your changes 1586
- Managing Passwords 1598
- Gathering HTTP Form Data 1610
- Configuring SSO for Plug-ins 1614
- Encoding 1615
- Encoding 1616
- Accessing Resources 1617
- Using an LDAP Server 1618
- Understanding How KCD Works 1628
- Authentication Flow with KCD 1629
- Before Configuring KCD 1630
- Configuring KCD 1631
- About Smart Tunnels 1635
- Why Smart Tunnels? 1635
- Assigning a Smart Tunnel List 1641
- Requirements 1648
- Logging Off Smart Tunnel 1649
- Configuring Port Forwarding 1650
- Automating Port Forwarding 1656
- Application Access User Notes 1657
- Understanding the hosts File 1658
- Configuring File Access 1660
- Configuring E-mail Proxies 1665
- Configuring Caching 1667
- Disabling Content Rewrite 1669
- Using Proxy Bypass 1669
- APCF Syntax 1671
- Viewing the Floating Toolbar 1675
- Modifying Your HTML File 1687
- Customizing Help 1692
- Communicating Security Tips 1695
- Features 1696
- Browsing the Web 1697
- Using Port Forwarding 1698
- Using E-mail Via Web Access 1700
- Using E-mail Via E-mail Proxy 1700
- Using Smart Tunnel 1700
- Creating Translation Tables 1702
- Capturing Data 1707
- Capturing Data 1710
- Configuring DTLS 1718
- Prompting Remote Users 1718
- Profile Editor in ASDM 1720
- Standalone Profile Editor 1720
- Enabling Start Before Logon 1721
- Enabling Rekey 1724
- Enabling Keepalive 1726
- Using Compression 1726
- Adjusting MTU Size 1727
- Configuring Session Timeouts 1727
- Enabling IPv6 VPN Access 1728
- Dependencies 1733
- Host Scan Packaging 1734
- Uninstalling Host Scan 1737
- Call Home 1741
- Configuring Logging 1743
- Analyzing Syslog Messages 1744
- Syslog Message Format 1745
- Severity Levels 1745
- Filtering Syslog Messages 1746
- Using Custom Message Lists 1746
- Prerequisites for Logging 1747
- Configuring Logging 1749
- Creating a Custom Event List 1755
- Configuring the Logging Queue 1757
- Enabling Secure Logging 1758
- Disabling a Syslog Message 1760
- Monitoring the Logs 1761
- Feature History for Logging 1762
- Feature History for Logging 1763
- Information About NSEL 1765
- Information About NSEL 1766
- Prerequisites for NSEL 1767
- Configuring NSEL 1768
- Configuring NSEL Collectors 1769
- Delaying Flow-Create Events 1773
- Monitoring NSEL 1774
- Feature History for NSEL 1778
- Feature History for NSEL 1779
- Configuring SNMP 1781
- Table 79-1 SNMP Terminology 1782
- SNMP Object Identifiers 1783
- Information About SNMP 1784
- Supported Tables in MIBs 1791
- Note Not supported on the 1793
- SNMP Version 3 1795
- Security Models 1796
- SNMP Groups 1796
- SNMP Users 1796
- SNMP Hosts 1796
- Prerequisites for SNMP 1797
- Configuring SNMP Traps 1800
- Using SNMP Version 1 or 2c 1802
- Using SNMP Version 3 1803
- Troubleshooting Tips 1804
- Interface Types and Examples 1805
- Monitoring SNMP 1806
- SNMP Syslog Messaging 1807
- SNMP Monitoring 1807
- Feature History for SNMP 1811
- Feature History for SNMP 1812
- Smart Call Home 1813
- What is Sent to Cisco? 1814
- DNS Requirement 1815
- Configuring Smart Call Home 1819
- Configuring DNS 1820
- Subscribing to Alert Groups 1821
- Configuring the Mail Server 1827
- Monitoring Smart Call Home 1831
- System Administration 1833
- Viewing Files in Flash Memory 1835
- Configuration 1842
- Running the Script 1844
- Sample Script 1845
- • asa5505: Cisco 5505 ASA 1852
- Downgrading Your Software 1853
- Performing the Downgrade 1854
- Downgrading Your Software 1855
- Troubleshooting 1857
- Pinging ASA Interfaces 1859
- Security 1860
- Appliance 1860
- Reloading the ASA 1864
- Performing Password Recovery 1864
- Disabling Password Recovery 1866
- Erasing the Flash File System 1868
- Other Troubleshooting Tools 1869
- Common Problems 1870
- Common Problems 1871
- Reference 1873
- APPENDIX 1875
- Command Modes and Prompts 1876
- Syntax Formatting 1877
- Abbreviating Commands 1877
- Command-Line Editing 1877
- Command Completion 1878
- Command Help 1878
- Filtering show Command Output 1878
- Command Output Paging 1879
- Adding Comments 1879
- Text Configuration Files 1879
- Automatic Text Entries 1881
- Line Order 1881
- Passwords 1881
- Supported Character Sets 1882
- Private Networks 1884
- Subnet Masks 1884
- Determining the Subnet Mask 1885
- Class B-Size Network Address 1886
- IPv6 Addresses 1887
- IPv6 Address Types 1888
- Global Address 1889
- Site-Local Address 1889
- Link-Local Address 1889
- Multicast Address 1890
- Anycast Address 1891
- IPv6 Address Prefixes 1892
- Protocols and Applications 1893
- TCP and UDP Ports 1893
- Table B-7 Port Literal Values 1894
- TCP and UDP Ports 1895
- Local Ports and Protocols 1896
- ICMP Types 1897
- ICMP Types 1898
- Attributes 1899
- Searching the LDAP Hierarchy 1901
- Cisco AV Pairs ACL Examples 1912
- Figure C-4 Banner Displayed 1916
- Step 1 Right-click the user 1916
- Step 2 Click the General tab 1923
- • group policy name 1927
- • OU=group policy name 1927
- • OU=group policy name; 1927
- Engineering, Sales 1933
- Attribute Description 1937
- Numerics 1939
- Glossary 1940
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