4.3.6 TACACS+ Authentication
Terminal Access Controller Access-Control System Plus (TACACS+) is a protocol that
handles authentication, authorization, and accounting (AAA) services. SecureSync sup-
ports pam_tacplus, allowing users to validate their username/password when logging into
SecureSync via a TACACS+ server. Currently, http/https/ssh/telnet/ftp protocols are sup-
ported, i.e. you can login to a SecureSync unit using TACACS+ authentication via applic-
ations using any of these protocols.
Note: Your TACACS+ files will need to have either a pap or global user
attribute. SecureSync does not authenticate tacacs.conf files with the
default login user attribute.
Caution: In order to utilize TACACS+ authentication, the account user-
name on the TACACS+ server must NOT be used with a local user account.
E x a m p l e :
A user with the username user3 on the TACACS+ server will not be able to login to a
SecureSync unit, if on that unit a local user account with the username user3 exists. However,
once the user deleted the local user3 account, she will be able to login with the TACACS+
user3 account.
Sources of general reference information on TACACS+:
https://en.wikipedia.org/wiki/TACACS
http://www.cisco.com/c/en/us/support/docs/security-vpn/remote-
authentication-dial-user-service-radius/13838-10.html
https://github.com/jeroennijhof/pam_tacplus
See also "RADIUS Authentication" on page267
4.3.6.1 Enabling/Disabling TACACS+
To enable or disable the use of TACACS+ authentication on a SecureSync unit:
1.
In the Web UI, navigate to MANAGEMENT > OTHER: Authentication.
2.
In the Actions panel on the left, click TACACS+. The TACACS+ Setup window will
be displayed.
4.3 Managing Users and Security
CHAPTER 4 • SecureSync 2400 User Manual Rev. 2
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