.TH LDAP.CONF 5 "2008/07/16" "OpenLDAP 2.3.43" .\" $OpenLDAP: pkg/ldap/doc/man/man5/ldap.conf.5,v 1.28.2.5 2008/02/11 23:24:09 kurt Exp $ .\" Copyright 1998-2008 The OpenLDAP Foundation All Rights Reserved. .\" Copying restrictions apply. See COPYRIGHT/LICENSE. .UC 6 .SH NAME ldap.conf, .ldaprc \- ldap configuration file .SH SYNOPSIS /etc/openldap/ldap.conf, .ldaprc .SH DESCRIPTION If the environment variable \fBLDAPNOINIT\fP is defined, all defaulting is disabled. .LP The .I ldap.conf configuration file is used to set system-wide defaults to be applied when running .I ldap clients. .LP Users may create an optional configuration file, .I ldaprc or .IR .ldaprc , in their home directory which will be used to override the system-wide defaults file. The file .I ldaprc in the current working directory is also used. .LP .LP Additional configuration files can be specified using the \fBLDAPCONF\fP and \fBLDAPRC\fP environment variables. \fBLDAPCONF\fP may be set to the path of a configuration file. This path can be absolute or relative to the current working directory. The \fBLDAPRC\fP, if defined, should be the basename of a file in the current working directory or in the user's home directory. .LP Environmental variables may also be used to augment the file based defaults. The name of the variable is the option name with an added prefix of \fBLDAP\fP. For example, to define \fBBASE\fP via the environment, set the variable \fBLDAPBASE\fP to the desired value. .LP Some options are user\-only. Such options are ignored if present in the .I ldap.conf (or file specified by .BR LDAPCONF ). .SH OPTIONS The configuration options are case-insensitive; their value, on a case by case basis, may be case-sensitive. The different configuration options are: .TP .B URI Specifies the URI(s) of an LDAP server(s) to which the .I LDAP library should connect. The URI scheme may be either .B ldap or .B ldaps which refer to LDAP over TCP and LDAP over SSL (TLS) respectively. Each server's name can be specified as a domain-style name or an IP address literal. Optionally, the server's name can followed by a ':' and the port number the LDAP server is listening on. If no port number is provided, the default port for the scheme is used (389 for ldap://, 636 for ldaps://). A space separated list of URIs may be provided. .TP .B BASE Specifies the default base DN to use when performing ldap operations. The base must be specified as a Distinguished Name in LDAP format. .TP .B BINDDN Specifies the default bind DN to use when performing ldap operations. The bind DN must be specified as a Distinguished Name in LDAP format. This is a user\-only option. .TP .B HOST Specifies the name(s) of an LDAP server(s) to which the .I LDAP library should connect. Each server's name can be specified as a domain-style name or an IP address and optionally followed by a ':' and the port number the ldap server is listening on. A space separated list of hosts may be provided. .B HOST is deprecated in favor of .BR URI . .TP .B PORT Specifies the default port used when connecting to LDAP servers(s). The port may be specified as a number. .B PORT is deprecated in favor of .BR URI. .TP .B REFERRALS Specifies if the client should automatically follow referrals returned by LDAP servers. The default is on. Note that the command line tools .BR ldapsearch (1) &co always override this option. .TP .B SIZELIMIT Specifies a size limit to use when performing searches. The number should be a non-negative integer. \fISIZELIMIT\fP of zero (0) specifies unlimited search size. .TP .B TIMELIMIT Specifies a time limit to use when performing searches. The number should be a non-negative integer. \fITIMELIMIT\fP of zero (0) specifies unlimited search time to be used. .TP .B DEREF Specifies how alias dereferencing is done when performing a search. The .B can be specified as one of the following keywords: .RS .TP .B never Aliases are never dereferenced. This is the default. .TP .B searching Aliases are dereferenced in subordinates of the base object, but not in locating the base object of the search. .TP .B finding Aliases are only dereferenced when locating the base object of the search. .TP .B always Aliases are dereferenced both in searching and in locating the base object of the search. .RE .SH SASL OPTIONS If OpenLDAP is built with Simple Authentication and Security Layer support, there are more options you can specify. .TP .B SASL_MECH Specifies the SASL mechanism to use. This is a user\-only option. .TP .B SASL_REALM Specifies the SASL realm. This is a user\-only option. .TP .B SASL_AUTHCID Specifies the authentication identity. This is a user\-only option. .TP .B SASL_AUTHZID Specifies the proxy authorization identity. This is a user\-only option. .TP .B SASL_SECPROPS Specifies Cyrus SASL security properties. The .B can be specified as a comma-separated list of the following: .RS .TP .B none (without any other properties) causes the properties defaults ("noanonymous,noplain") to be cleared. .TP .B noplain disables mechanisms susceptible to simple passive attacks. .TP .B noactive disables mechanisms susceptible to active attacks. .TP .B nodict disables mechanisms susceptible to passive dictionary attacks. .TP .B noanonymous disables mechanisms which support anonymous login. .TP .B forwardsec requires forward secrecy between sessions. .TP .B passcred requires mechanisms which pass client credentials (and allows mechanisms which can pass credentials to do so). .TP .B minssf= specifies the minimum acceptable .I security strength factor as an integer approximating the effective key length used for encryption. 0 (zero) implies no protection, 1 implies integrity protection only, 56 allows DES or other weak ciphers, 112 allows triple DES and other strong ciphers, 128 allows RC4, Blowfish and other modern strong ciphers. The default is 0. .TP .B maxssf= specifies the maximum acceptable .I security strength factor as an integer (see .B minssf description). The default is .BR INT_MAX . .TP .B maxbufsize= specifies the maximum security layer receive buffer size allowed. 0 disables security layers. The default is 65536. .RE .SH TLS OPTIONS If OpenLDAP is built with Transport Layer Security support, there are more options you can specify. These options are used when an .B ldaps:// URI is selected (by default or otherwise) or when the application negotiates TLS by issuing the LDAP Start TLS operation. .TP .B TLS_CACERT Specifies the file that contains certificates for all of the Certificate Authorities the client will recognize. .TP .B TLS_CACERTDIR Specifies the path of a directory that contains Certificate Authority certificates in separate individual files. The .B TLS_CACERT is always used before .B TLS_CACERTDIR. .TP .B TLS_CERT Specifies the file that contains the client certificate. This is a user\-only option. .TP .B TLS_KEY Specifies the file that contains the private key that matches the certificate stored in the .B TLS_CERT file. Currently, the private key must not be protected with a password, so it is of critical importance that the key file is protected carefully. This is a user\-only option. .TP .B TLS_CIPHER_SUITE Specifies acceptable cipher suite and preference order. should be a cipher specification for OpenSSL, e.g., HIGH:MEDIUM:+SSLv2. .TP .B TLS_RANDFILE Specifies the file to obtain random bits from when /dev/[u]random is not available. Generally set to the name of the EGD/PRNGD socket. The environment variable RANDFILE can also be used to specify the filename. .TP .B TLS_REQCERT Specifies what checks to perform on server certificates in a TLS session, if any. The .B can be specified as one of the following keywords: .RS .TP .B never The client will not request or check any server certificate. .TP .B allow The server certificate is requested. If no certificate is provided, the session proceeds normally. If a bad certificate is provided, it will be ignored and the session proceeds normally. .TP .B try The server certificate is requested. If no certificate is provided, the session proceeds normally. If a bad certificate is provided, the session is immediately terminated. .TP .B demand | hard These keywords are equivalent. The server certificate is requested. If no certificate is provided, or a bad certificate is provided, the session is immediately terminated. This is the default setting. .RE .TP .B TLS_CRLCHECK Specifies if the Certificate Revocation List (CRL) of the CA should be used to verify if the server certificates have not been revoked. This requires .B TLS_CACERTDIR parameter to be set. .B can be specified as one of the following keywords: .RS .TP .B none No CRL checks are performed .TP .B peer Check the CRL of the peer certificate .TP .B all Check the CRL for a whole certificate chain .RE .SH "ENVIRONMENT VARIABLES" .TP LDAPNOINIT disable all defaulting .TP LDAPCONF path of a configuration file .TP LDAPRC basename of ldaprc file in $HOME or $CWD .TP LDAP Set as from ldap.conf .SH FILES .TP .I /etc/openldap/ldap.conf system-wide ldap configuration file .TP .I $HOME/ldaprc, $HOME/.ldaprc user ldap configuration file .TP .I $CWD/ldaprc local ldap configuration file .SH "SEE ALSO" .BR ldap (3), .BR openssl (1), .BR sasl (3) .SH AUTHOR Kurt Zeilenga, The OpenLDAP Project .SH ACKNOWLEDGEMENTS .B OpenLDAP is developed and maintained by The OpenLDAP Project (http://www.openldap.org/). .B OpenLDAP is derived from University of Michigan LDAP 3.3 Release.