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Cisco ASDM User Guide
OL-16647-01
Chapter 16 Configuring Management Access
Configuring AAA for System Administrators
Recovering from a Lockout
In some circumstances, when you turn on command authorization or CLI authentication, you can be
locked out of the security appliance CLI. You can usually recover access by restarting the security
appliance. However, if you already saved your configuration, you might be locked out. Table 16-2 lists
the common lockout conditions and how you might recover from them.
Table 16-2 CLI Authentication and Command Authorization Lockout Scenarios
Feature Lockout Condition Description Workaround: Single Mode Workaround: Multiple Mode
Local CLI
authentication
No users in the
local database
If you have no users in
the local database, you
cannot log in, and you
cannot add any users.
Log in and reset the
passwords and aaa
commands.
Session into the security
appliance from the switch.
From the system execution
space, you can change to the
context and add a user.
TACACS+
command
authorization
TACACS+ CLI
authentication
RADIUS CLI
authentication
Server down or
unreachable and
you do not have
the fallback
method
configured
If the server is
unreachable, then you
cannot log in or enter
any commands.
1. Log in and reset the
passwords and AAA
commands.
2. Configure the local
database as a fallback
method so you do not
get locked out when the
server is down.
1. If the server is
unreachable because the
network configuration
is incorrect on the
security appliance,
session into the security
appliance from the
switch. From the system
execution space, you
can change to the
context and reconfigure
your network settings.
2. Configure the local
database as a fallback
method so you do not
get locked out when the
server is down.
TACACS+
command
authorization
You are logged in
as a user without
enough privileges
or as a user that
does not exist
You enable command
authorization, but then
find that the user
cannot enter any more
commands.
Fix the TACACS+ server
user account.
If you do not have access to
the TACACS+ server and
you need to configure the
security appliance
immediately, then log into
the maintenance partition
and reset the passwords and
aaa commands.
Session into the security
appliance from the switch.
From the system execution
space, you can change to the
context and complete the
configuration changes. You
can also disable command
authorization until you fix
the TACACS+
configuration.
Local command
authorization
You are logged in
as a user without
enough privileges
You enable command
authorization, but then
find that the user
cannot enter any more
commands.
Log in and reset the
passwords and aaa
commands.
Session into the security
appliance from the switch.
From the system execution
space, you can change to the
context and change the user
level.