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<citerefentry><refentrytitle>pam_login_access</refentrytitle><manvolnum>8</manvolnum></citerefentry>
The <citerefentry><refentrytitle>pam_login_access</refentrytitle><manvolnum>8</manvolnum></citerefentry> module provides an implementation of the account management primitive which enforces the login restrictions specified in the <citerefentry><refentrytitle>login.access</refentrytitle><manvolnum>5</manvolnum></citerefentry> table.
<citerefentry><refentrytitle>pam_nologin</refentrytitle><manvolnum>8</manvolnum></citerefentry>
The <citerefentry><refentrytitle>pam_nologin</refentrytitle><manvolnum>8</manvolnum></citerefentry> module refuses non-root logins when <filename>/var/run/nologin</filename> exists. This file is normally created by <citerefentry><refentrytitle>shutdown</refentrytitle><manvolnum>8</manvolnum></citerefentry> when less than five minutes remain until the scheduled shutdown time.
<citerefentry><refentrytitle>pam_opie</refentrytitle><manvolnum>8</manvolnum></citerefentry>
The <citerefentry><refentrytitle>pam_opie</refentrytitle><manvolnum>8</manvolnum></citerefentry> module implements the <citerefentry><refentrytitle>opie</refentrytitle><manvolnum>4</manvolnum></citerefentry> authentication method. The <citerefentry><refentrytitle>opie</refentrytitle><manvolnum>4</manvolnum></citerefentry> system is a challenge-response mechanism where the response to each challenge is a direct function of the challenge and a passphrase, so the response can be easily computed <quote>just in time</quote> by anyone possessing the passphrase, eliminating the need for password lists. Moreover, since <citerefentry><refentrytitle>opie</refentrytitle><manvolnum>4</manvolnum></citerefentry> never reuses a challenge that has been correctly answered, it is not vulnerable to replay attacks.
<citerefentry><refentrytitle>pam_opieaccess</refentrytitle><manvolnum>8</manvolnum></citerefentry>
The <citerefentry><refentrytitle>pam_opieaccess</refentrytitle><manvolnum>8</manvolnum></citerefentry> module is a companion module to <citerefentry><refentrytitle>pam_opie</refentrytitle><manvolnum>8</manvolnum></citerefentry>. Its purpose is to enforce the restrictions codified in <citerefentry><refentrytitle>opieaccess</refentrytitle><manvolnum>5</manvolnum></citerefentry>, which regulate the conditions under which a user who would normally authenticate herself using <citerefentry><refentrytitle>opie</refentrytitle><manvolnum>4</manvolnum></citerefentry> is allowed to use alternate methods. This is most often used to prohibit the use of password authentication from untrusted hosts.
In order to be effective, the <citerefentry><refentrytitle>pam_opieaccess</refentrytitle><manvolnum>8</manvolnum></citerefentry> module must be listed as <literal>requisite</literal> immediately after a <literal>sufficient</literal> entry for <citerefentry><refentrytitle>pam_opie</refentrytitle><manvolnum>8</manvolnum></citerefentry>, and before any other modules, in the <literal>auth</literal> chain.
<citerefentry><refentrytitle>pam_passwdqc</refentrytitle><manvolnum>8</manvolnum></citerefentry>
The <citerefentry><refentrytitle>pam_passwdqc</refentrytitle><manvolnum>8</manvolnum></citerefentry> module
<citerefentry><refentrytitle>pam_permit</refentrytitle><manvolnum>8</manvolnum></citerefentry>
The <citerefentry><refentrytitle>pam_permit</refentrytitle><manvolnum>8</manvolnum></citerefentry> module is one of the simplest modules available; it responds to any request with <literal>PAM_SUCCESS</literal>. It is useful as a placeholder for services where one or more chains would otherwise be empty.
<citerefentry><refentrytitle>pam_radius</refentrytitle><manvolnum>8</manvolnum></citerefentry>
The <citerefentry><refentrytitle>pam_radius</refentrytitle><manvolnum>8</manvolnum></citerefentry> module
<citerefentry><refentrytitle>pam_rhosts</refentrytitle><manvolnum>8</manvolnum></citerefentry>
The <citerefentry><refentrytitle>pam_rhosts</refentrytitle><manvolnum>8</manvolnum></citerefentry> module
<citerefentry><refentrytitle>pam_rootok</refentrytitle><manvolnum>8</manvolnum></citerefentry>
The <citerefentry><refentrytitle>pam_rootok</refentrytitle><manvolnum>8</manvolnum></citerefentry> module reports success if and only if the real user id of the process calling it (which is assumed to be run by the applicant) is 0. This is useful for non-networked services such as <citerefentry><refentrytitle>su</refentrytitle><manvolnum>1</manvolnum></citerefentry> or <citerefentry><refentrytitle>passwd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, to which the <literal>root</literal> should have automatic access.
<citerefentry><refentrytitle>pam_securetty</refentrytitle><manvolnum>8</manvolnum></citerefentry>
The <citerefentry><refentrytitle>pam_securetty</refentrytitle><manvolnum>8</manvolnum></citerefentry> module
<citerefentry><refentrytitle>pam_self</refentrytitle><manvolnum>8</manvolnum></citerefentry>
The <citerefentry><refentrytitle>pam_self</refentrytitle><manvolnum>8</manvolnum></citerefentry> module reports success if and only if the names of the applicant matches that of the target account. It is most useful for non-networked services such as <citerefentry><refentrytitle>su</refentrytitle><manvolnum>1</manvolnum></citerefentry>, where the identity of the applicant can be easily verified.
<citerefentry><refentrytitle>pam_ssh</refentrytitle><manvolnum>8</manvolnum></citerefentry>
The <citerefentry><refentrytitle>pam_ssh</refentrytitle><manvolnum>8</manvolnum></citerefentry> module provides both authentication and session services. The authentication service allows users who have passphrase-protected SSH secret keys in their <filename>~/.ssh</filename> directory to authenticate themselves by typing their passphrase. The session service starts <citerefentry><refentrytitle>ssh-agent</refentrytitle><manvolnum>1</manvolnum></citerefentry> and preloads it with the keys that were decrypted in the authentication phase. This feature is particularly useful for local logins, whether in X (using <citerefentry vendor="xfree86"><refentrytitle>xdm</refentrytitle><manvolnum>1</manvolnum></citerefentry> or another PAM-aware X login manager) or at the console.
<citerefentry><refentrytitle>pam_tacplus</refentrytitle><manvolnum>8</manvolnum></citerefentry>
The <citerefentry><refentrytitle>pam_tacplus</refentrytitle><manvolnum>8</manvolnum></citerefentry> module
<citerefentry><refentrytitle>pam_unix</refentrytitle><manvolnum>8</manvolnum></citerefentry>
The <citerefentry><refentrytitle>pam_unix</refentrytitle><manvolnum>8</manvolnum></citerefentry> module implements traditional <trademark class="registered">UNIX</trademark> password authentication, using <citerefentry><refentrytitle>getpwnam</refentrytitle><manvolnum>3</manvolnum></citerefentry> to obtain the target account's password and compare it with the one provided by the applicant. It also provides account management services (enforcing account and password expiration times) and password-changing services. This is probably the single most useful module, as the great majority of admins will want to maintain historical behavior for at least some services.
PAM Application Programming
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Source string comment
(itstool) path: section/title (itstool) id: article.translate.xml#pam-modules-rhosts.title
Flags
read-only
Source string location
article.translate.xml:1141
String age
a year ago
Source string age
a year ago
Translation file
articles/pam.pot, string 206