Admin Guide

Chapter 11: Network Time Protocol.................................................................................... 133
NTP fundamentals............................................................................................................... 133
Overview...................................................................................................................... 133
NTP system implementation model................................................................................. 134
Time distribution within a subnet..................................................................................... 135
Synchronization............................................................................................................ 135
NTP modes of operation................................................................................................ 135
NTP authentication........................................................................................................ 136
NTP configuration using ACLI.............................................................................................. 137
Enabling NTP globally................................................................................................... 139
Adding an NTP server................................................................................................... 140
Configuring authentication keys...................................................................................... 141
NTP configuration using EDM.............................................................................................. 142
Enabling NTP globally................................................................................................... 144
Adding an NTP server................................................................................................... 144
Configuring authentication keys...................................................................................... 145
Chapter 12: Secure Shell...................................................................................................... 147
Secure Shell fundamentals................................................................................................... 147
SSH rekeying................................................................................................................ 158
Secure Shell configuration using ACLI.................................................................................. 158
Downloading the software.............................................................................................. 159
Enabling the SSHv2 server............................................................................................ 159
Changing the SSH server authentication mode................................................................ 160
Setting SSH configuration parameters............................................................................. 161
Verifying and displaying SSH configuration information.................................................... 166
Connecting to a remote host using the SSH client............................................................ 167
Generating user key files............................................................................................... 168
Managing an SSL certificate........................................................................................... 169
Disabling SFTP without disabling SSH............................................................................ 170
Enabling SSH rekey...................................................................................................... 170
Configuring SSH rekey data-limit.................................................................................... 171
Configuring SSH rekey time-interval................................................................................ 172
Displaying SSH rekey information................................................................................... 172
Downgrading or upgrading from releases that support different key sizes.......................... 173
Secure Shell configuration using Enterprise Device Manager.................................................. 174
Downloading the software.............................................................................................. 174
Changing Secure Shell parameters................................................................................. 175
Chapter 13: System access................................................................................................. 178
System access fundamentals............................................................................................... 178
Logging on to the system............................................................................................... 178
Managing the system using different VRF contexts.......................................................... 181
ACLI passwords............................................................................................................ 181
Access policies for services............................................................................................ 182
Contents
January 2017 Administering Avaya VSP 7200 Series and 8000 Series 7
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