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Removing a Command from EXEC Mode..............................................................................................................57
Moving a Command from EXEC Privilege Mode to EXEC Mode.................................................................... 57
Allowing Access to CONFIGURATION Mode Commands..................................................................................57
Allowing Access to Different Modes.......................................................................................................................57
Applying a Privilege Level to a Username............................................................................................................. 58
Applying a Privilege Level to a Terminal Line....................................................................................................... 58
Configuring Logging......................................................................................................................................................... 59
Audit and Security Logs.............................................................................................................................................59
Configuring Logging Format ..............................................................................................................................61
Setting Up a Secure Connection to a Syslog Server................................................................................. 61
Log Messages in the Internal Buffer............................................................................................................................ 62
Disabling System Logging............................................................................................................................................... 62
Sending System Messages to a Syslog Server.......................................................................................................... 63
Configuring a UNIX System as a Syslog Server...................................................................................................63
Track Login Activity..........................................................................................................................................................63
Restrictions for Tracking Login Activity................................................................................................................ 63
Configuring Login Activity Tracking........................................................................................................................63
Display Login Statistics.............................................................................................................................................. 64
Limit Concurrent Login Sessions...................................................................................................................................65
Restrictions for Limiting the Number of Concurrent Sessions........................................................................ 65
Configuring Concurrent Session Limit................................................................................................................... 66
Enabling the System to Clear Existing Sessions..................................................................................................66
Enabling Secured CLI Mode........................................................................................................................................... 66
Changing System Logging Settings..............................................................................................................................67
Display the Logging Buffer and the Logging Configuration....................................................................................68
Configuring a UNIX Logging Facility Level..................................................................................................................68
Synchronizing Log Messages......................................................................................................................................... 69
Enabling Timestamp on Syslog Messages...................................................................................................................69
File Transfer Services.......................................................................................................................................................72
Enabling the FTP Server............................................................................................................................................ 73
Configuring FTP Server Parameters.......................................................................................................................73
Configuring FTP Client Parameters........................................................................................................................ 73
Terminal Lines.....................................................................................................................................................................74
Denying and Permitting Access to a Terminal Line............................................................................................. 74
Configuring Login Authentication for Terminal Lines......................................................................................... 75
Setting Timeout for EXEC Privilege Mode..................................................................................................................76
Using Telnet to get to Another Network Device....................................................................................................... 76
Lock CONFIGURATION Mode........................................................................................................................................77
LPC Bus Quality Degradation......................................................................................................................................... 77
Reloading the system....................................................................................................................................................... 78
Restoring the Factory Default Settings....................................................................................................................... 79
Restoring Factory Default Environment Variables.............................................................................................. 79
Viewing the Reason for Last System Reboot............................................................................................................ 80
Disabling Syslog Messages for SNMP Authentication Failure Events................................................................. 80
Chapter 5: 802.1X........................................................................................................................ 81
Port-Authentication Process..........................................................................................................................................82
EAP over RADIUS........................................................................................................................................................83
Configuring 802.1X............................................................................................................................................................84
Important Points to Remember..................................................................................................................................... 84
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