LDAP Attribute Syntaxes

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What is an attribute syntax in LDAP?

An attribute syntax is the LDAP equivalent of a data type.

What constraints must values for attributes of a certain type abide by in LDAP?

They must abide by the constraints of the associated attribute syntax.

Why is it not as easy to extend the set of attribute syntaxes in a server compared to defining new attribute types or object classes?

Support for an attribute syntax requires server-side logic to define the constraints, making it less easily extendable than defining new attribute types or object classes.

What does the ldapSyntaxes attribute of the subschema subentry in an LDAP server provide information about?

It provides information about the syntaxes the server supports. Signup and view all the answers

What is the format of the values of the ldapSyntaxes attribute in an LDAP server?

The values must have the form of an open parenthesis followed by zero or more spaces, a numeric OID, and an optional descriptive name if present. Signup and view all the answers

Can third-party developers create a custom attribute syntax in some LDAP servers?

Yes, some servers may offer an API that allows third-party developers to create a custom attribute syntax. Signup and view all the answers

What characters must be escaped in the name when using UTF-8?

single quote and backslash Signup and view all the answers

What is the OID for the directory string syntax as defined in RFC 4517?

1.3.6.1.4.1.1466.115.121.1.15 Signup and view all the answers

What is the IA5 string syntax defined in RFC 4517?

collection of characters from the IA5 character set Signup and view all the answers

What are the allowed characters in the ASCII printable string?

Uppercase and lowercase letters, numeric digits, single quote, open and close parentheses, plus sign, comma, hyphen, period, equal sign, forward slash, colon, question mark, space Signup and view all the answers

What is the OID for the Boolean syntax as defined in RFC 4517?

1.3.6.1.4.1.1466.115.121.1.44 Signup and view all the answers

What values are technically legal for the Boolean syntax?

TRUE and FALSE Signup and view all the answers

What is the LDAP syntax description syntax defined in RFC 4517?

LDAP Syntax Description Signup and view all the answers

What is the purpose of the IA5 string syntax?

To represent a collection of characters from the IA5 character set Signup and view all the answers

What is the format of an attribute syntax definition defined by?

An attribute syntax Signup and view all the answers

What are some characters in the IA5 character set that may be localized differently in different regions?

Currency symbol Signup and view all the answers

What is the purpose of the LDAP bind operation?

To authenticate clients and establish an authorization identity Signup and view all the answers

What is the recommended approach for using simple authentication in LDAP bind requests?

Employing SSL/TLS or other encrypted connection Signup and view all the answers

What are the two parts of authentication mentioned in the text?

User identification and password policy checks Signup and view all the answers

In what form is the proof identity transmitted during simple authentication in LDAP?

In the form of a password Signup and view all the answers

What type of authentication does the LDAP bind request support?

Simple and SASL authentication Signup and view all the answers

What additional steps may be involved in the LDAP bind process in many servers?

Checking password policy state and other constraints Signup and view all the answers

What is the most recent LDAP protocol version that new applications should be written to use?

Version 3 Signup and view all the answers

What does an LDAP bind request include?

Protocol version, user's DN, and credentials Signup and view all the answers

What is the purpose of SASL authentication in LDAP?

To allow almost any kind of authentication to be plugged into LDAP Signup and view all the answers

When is the DN of the user to authenticate typically empty for SASL authentication?

For anonymous simple authentication Signup and view all the answers

What does the LDAPv3 specification state regarding providing empty strings as the bind DN and password?

Only the password must be empty Signup and view all the answers

What happens if an LDAP client issues some other kind of request without first performing a bind?

The client will be considered unauthenticated Signup and view all the answers

What may some SASL mechanisms require between the client and server to complete the authentication process?

Multiple bind requests and responses Signup and view all the answers

What is returned by the server when a simple bind operation completes?

Result code, matched DN, and diagnostic message Signup and view all the answers

Which mechanism makes it possible to plug almost any kind of authentication into LDAP?

SASL mechanism Signup and view all the answers

Which version of LDAP should be used by new applications?