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Cisco ASA 5500 Series Configuration Guide using ASDM
Appendix B Configuring an External Server for Authorization and Authentication
Configuring an External TACACS+ Server
Configuring an External TACACS+ Server
The ASA provides support for TACACS+ attributes. TACACS+ separates the functions of
authentication, authorization, and accounting. The protocol supports two types of attributes: mandatory
and optional. Both the server and client must understand a mandatory attribute, and the mandatory
attribute must be applied to the user. An optional attribute may or may not be understood or used.
Note To use TACACS+ attributes, make sure that you have enabled AAA services on the NAS.
Table B-9 lists supported TACACS+ authorization response attributes for cut-through-proxy
connections. Table B-10 lists supported TACACS+ accounting attributes.
.
Table B-9 Supported TACACS+ Authorization Response Attributes
Attribute Description
acl Identifies a locally configured access list to be applied to the connection.
idletime Indicates the amount of inactivity in minutes that is allowed before the
authenticated user session is terminated.
timeout Specifies the absolute amount of time in minutes that authentication credentials
remain active before the authenticated user session is terminated.
Table B-10 Supported TACACS+ Accounting Attributes
Attribute Description
bytes_in Specifies the number of input bytes transferred during this connection (stop
records only).
bytes_out Specifies the number of output bytes transferred during this connection (stop
records only).
cmd Defines the command executed (command accounting only).
disc-cause Indicates the numeric code that identifies the reason for disconnecting (stop
records only).
elapsed_time Defines the elapsed time in seconds for the connection (stop records only).
foreign_ip Specifies the IP address of the client for tunnel connections. Defines the address
on the lowest security interface for cut-through-proxy connections.
local_ip Specifies the IP address that the client connected to for tunnel connections. Defines
the address on the highest security interface for cut-through-proxy connections.
NAS port Contains a session ID for the connection.
packs_in Specifies the number of input packets transferred during this connection.
packs_out Specifies the number of output packets transferred during this connection.
priv-level Set to the user privilege level for command accounting requests or to 1 otherwise.
rem_iddr Indicates the IP address of the client.
service Specifies the service used. Always set to “shell” for command accounting only.