Connectivity Guide

Moving a Command from EXEC Privilege Mode to EXEC Mode.................................................................... 55
Allowing Access to CONFIGURATION Mode Commands................................................................................. 55
Allowing Access to Different Modes...................................................................................................................... 55
Applying a Privilege Level to a Username..............................................................................................................57
Applying a Privilege Level to a Terminal Line........................................................................................................57
Configuring Logging..........................................................................................................................................................57
Audit and Security Logs............................................................................................................................................. 57
Configuring Logging Format .............................................................................................................................59
Setting Up a Secure Connection to a Syslog Server................................................................................ 59
Log Messages in the Internal Buffer............................................................................................................................. 61
Disabling System Logging................................................................................................................................................ 61
Sending System Messages to a Syslog Server...........................................................................................................61
Configuring a UNIX System as a Syslog Server................................................................................................... 61
Track Login Activity..........................................................................................................................................................62
Restrictions for Tracking Login Activity................................................................................................................ 62
Configuring Login Activity Tracking........................................................................................................................62
Display Login Statistics.............................................................................................................................................. 62
Limit Concurrent Login Sessions...................................................................................................................................64
Restrictions for Limiting the Number of Concurrent Sessions........................................................................ 64
Configuring Concurrent Session Limit....................................................................................................................64
Enabling the System to Clear Existing Sessions.................................................................................................. 64
Enabling Secured CLI Mode........................................................................................................................................... 65
Changing System Logging Settings..............................................................................................................................65
Display the Logging Buffer and the Logging Configuration....................................................................................66
Configuring a UNIX Logging Facility Level..................................................................................................................67
Synchronizing Log Messages......................................................................................................................................... 67
Enabling Timestamp on Syslog Messages...................................................................................................................68
File Transfer Services.......................................................................................................................................................68
Enabling the FTP Server............................................................................................................................................69
Configuring FTP Server Parameters...................................................................................................................... 69
Configuring FTP Client Parameters........................................................................................................................ 69
Terminal Lines.................................................................................................................................................................... 70
Denying and Permitting Access to a Terminal Line............................................................................................. 70
Configuring Login Authentication for Terminal Lines.......................................................................................... 71
Setting Timeout for EXEC Privilege Mode..................................................................................................................72
Using Telnet to get to Another Network Device....................................................................................................... 72
Lock CONFIGURATION Mode........................................................................................................................................73
Recovering from a Forgotten Password on the S6000........................................................................................... 73
Recovering from a Forgotten Enable Password........................................................................................................ 74
Recovering from a Failed Start on the S6000........................................................................................................... 74
Restoring the Factory Default Settings.......................................................................................................................75
Restoring Factory Default Environment Variables.............................................................................................. 75
Viewing the Reason for Last System Reboot.............................................................................................................76
Disabling Syslog Messages for SNMP Authentication Failure Events..................................................................77
Chapter 5: 802.1X........................................................................................................................78
Port-Authentication Process.......................................................................................................................................... 79
EAP over RADIUS........................................................................................................................................................80
Configuring 802.1X............................................................................................................................................................ 81
Important Points to Remember...................................................................................................................................... 81
4
Contents