sonic-buildimage/files/image_config/hostcfgd/common-auth-sonic.j2

#THIS IS AN AUTO-GENERATED FILE
#
# /etc/pam.d/common-auth- authentication settings common to all services
# This file is included from other service-specific PAM config files,
# and should contain a list of the authentication modules that define
# the central authentication scheme for use on the system
# (e.g., /etc/shadow, LDAP, Kerberos, etc.). The default is to use the
# traditional Unix authentication mechanisms.
#
# here are the per-package modules (the "Primary" block)

{% if auth['login'] == 'local' %}
auth	[success=1 default=ignore]	pam_unix.so nullok try_first_pass

{% elif auth['login'] == 'local,tacacs+' %}
auth	[success=done new_authtok_reqd=done default=ignore{{ ' auth_err=die' if not auth['failthrough'] }}]	pam_unix.so nullok try_first_pass
{% for server in servers | sub(0, -1) %}
auth	[success=done new_authtok_reqd=done default=ignore{{ ' auth_err=die' if not auth['failthrough'] }}]	pam_tacplus.so server={{ server.ip }}:{{ server.tcp_port }} secret={{ server.passkey }} login={{ server.auth_type }} timeout={{ server.timeout }} {% if server.vrf %} vrf={{ server.vrf }} {% endif %} try_first_pass
{% endfor %}
{% if servers | count %}
{% set last_server = servers | last %}
auth	[success=1 default=ignore]	pam_tacplus.so server={{ last_server.ip }}:{{ last_server.tcp_port }} secret={{ last_server.passkey }} login={{ last_server.auth_type }} timeout={{ last_server.timeout }} {% if last_server.vrf %} vrf={{ last_server.vrf }} {% endif %} try_first_pass

{% endif %}
{% elif auth['login'] == 'tacacs+' or auth['login'] == 'tacacs+,local' %}
{% for server in servers %}
auth	[success=done new_authtok_reqd=done default=ignore{{ ' auth_err=die' if not auth['failthrough'] }}]	pam_tacplus.so server={{ server.ip }}:{{ server.tcp_port }} secret={{ server.passkey }} login={{ server.auth_type }} timeout={{ server.timeout }} {%if server.vrf %} vrf={{ server.vrf }} {% endif %} try_first_pass
{% endfor %}
auth	[success=1 default=ignore]	pam_unix.so nullok try_first_pass

{% else %}
auth	[success=1 default=ignore]	pam_unix.so nullok try_first_pass

{% endif %}
#
# here's the fallback if no module succeeds
auth    requisite                       pam_deny.so
# prime the stack with a positive return value if there isn't one already;
# this avoids us returning an error just because nothing sets a success code
# since the modules above will each just jump around
auth    required                        pam_permit.so
# and here are more per-package modules (the "Additional" block)