IBM Tivoli Access Manager for e-business: WebSEAL Administration ...

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Configuring post password change processing WebSEAL can be configured to allow customized processing to occur after a successful password change operation. Password changes can occur voluntarily using the pkmspasswd command from the browser, or through mandated actions dictated by password security policies (such as password expiration). The post password change processing capability allows you, for example, to update one or more external user registries without additional authentication overhead. The post password change processing functionality relies on an additional authentication mechanism configured in the webseald.conf configuration file. If a password change is successful, WebSEAL checks for this additional mechanism. If the password change fails, WebSEAL does not check for the additional mechanism. The additional authentication mechanism is a custom authentication library, written using the external authentication C API. Refer to the IBM Tivoli Access Manager WebSEAL Developer’s Reference for complete reference information for this API. If the custom mechanism is configured and the password change is successful, the custom library receives the old password, the new password, and the user name. To configure post password change processing, use the post-pwd-change parameter in the [authentication-mechanisms] stanza of the webseald.conf configuration file to specify the full path to the custom library file: [authentication-mechanisms] post-pwdchg-process = For example (Solaris): [authentication-mechanisms] post-pwdchg-process = /opt/PolicyDirector/lib/reg2update.so Post password change processing conditions v WebSEAL calls a configured custom library only when a password change is successful v Errors are returned as success or failure. It is the responsibility of the developer to properly handle any errors locally. This success or failure is audited, but not acted on. v Failure of post password change processing does not cause a successful password change to fail 214 IBM Tivoli Access Manager for e-business: WebSEAL Administration Guide
Extended attributes for credentials This section contains the following topics: v “Mechanisms for adding registry attributes to a credential” v “Registry attribute entitlement service configuration” on page 216 v “Junction handling of extended credential attributes” on page 218 Mechanisms for adding registry attributes to a credential The WebSEAL authentication process accesses the Tivoli Access Manager user registry and builds a credential for the user. The credential contains user information that is needed to make access decisions. This includes information such as user name and list of groups to which the user belongs. WebSEAL supports several different mechanisms (services) that allow administrators and application developers to extend the authentication process. When WebSEAL conducts the authentication process, it checks to see if any external services have been implemented and configured. When they have, WebSEAL calls those services. The services can do their own processing to build a list of extended attributes about the user identity. These extended attributes are added to the user credential. The following types of services are supported: v Registry attribute entitlement service This entitlement service is built-in to Tivoli Access Manager by default. This service is an implementation of a class of Tivoli Access Manager entitlement services known as credential attribute entitlement services. This service is called a registry attribute entitlement service because it obtains specified user information from a user registry (such as an LDAP user registry) and inserts the data into an attribute list in the user credential. This built-in registry attribute entitlement service is a generic entitlement service that can be used by many resource managers. This service takes the place of a previous method that required administrators to add ″tag/value″ entries to the [ldap-ext-creds-tag] stanza in the pd.conf configuration file. In Version 5.1, you should use the built-in entitlement service to obtain LDAP user registry data. For configuration information, see “Registry attribute entitlement service configuration” on page 216. Note: Note that Tivoli Access Manager provides additional built-in entitlement services that can be used to add additional information. These additional services, however, obtain the additional information from sources other than user registry entries. For example, the extended attribute entitlement service obtains information from ACLs and POPs in the protected resource object space. For more information, see the description of entitlement services in the IBM Tivoli Access Manager for e-business Authorization C API Developer Reference. v Customized credential attribute entitlement service When the built-in credential attribute entitlement service cannot provide all of the information needed for your deployment, you can write your own credential attribute entitlement service. This can include your own version of a registry attribute entitlement service. Tivoli Access Manager supports this as part of the authorization API. For more information, see the IBM Tivoli Access Manager for e-business Authorization C API Developer Reference. v Credential extended attributes external authentication service (CDAS) Chapter 7. Advanced WebSEAL authentication 215
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IBM Tivoli Access Manager for e-bus
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Note Before using this information
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Silent configuration overview . . .
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Event capturing and logging . . . .
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Token authentication concepts . . .
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Configuring WebSEAL key database pa
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Preserving cookie names . . . . . .
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Logging . . . . . . . . . . . . . .
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xvi IBM Tivoli Access Manager for e
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This chapter introduces you to impo
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Web security information v IBM Tivo
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v Secure Sockets Layer Introduction
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The following documents associated
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Monospace Code examples, command li
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IBM Tivoli Access Manager WebSEAL:
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The access control list (ACL) An ac
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Note: Traditional applications bund
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v Authenticated clients access usin
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v A user makes a request for a reso
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A unified Web space simplifies the
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14 IBM Tivoli Access Manager for e-
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Server instance configuration This
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Table 1. WebSEAL instances sharing
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- When the Web document root is not
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-ssl_yn ssl_enable_yes_no -key_file
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Server instance configuration tasks
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Removing a server instance To remov
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Communication protocol configuratio
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Restricting connections from specif
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Cryptographic hardware for encrypti
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You can specify whether to enable F
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3. In the Open dialog window, selec
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Quality of protection levels You ca
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Configuring authorization database
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3. Change the settings for the data
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Multi-locale support with UTF-8 Thi
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WebSEAL generates logging and audit
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Configuring multi-locale support Co
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WebSEAL does not recognize UTF-8 en
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ackwards compatibility, the format
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Language System Directory English (
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Preventing vulnerability caused by
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Replicated front-end WebSEAL server
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The session cookie links to session
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Table 4. P3P default header values
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Table 6. Supported values for the c
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For each value specified for purpos
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example, when your compact policy s
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70 IBM Tivoli Access Manager for e-
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Server tasks Start a WebSEAL server
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Managing the Web space The followin
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You can configure the specific grap
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Parameter Description cache-type Sp
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HTTP data compression WebSEAL serve
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Compression policy in POPs You can
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HTTP error message pages When WebSE
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Filename Title Description HTTP Err
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Managing custom account management
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Macro Description %CERTAUTHN% Subst
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Backup and restore Tivoli Access Ma
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Problem determination tools for Web
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Logging WebSEAL serviceability mess
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Event capturing and logging You can
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In this example, none of the option
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Authentication event log output Aut
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Table 18. Authentication errors (co
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Log Files Location Parameter Enable
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Displaying referer.log The referer.
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WebSEAL-specific ACL policies The f
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Configuring three strikes login pol
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Configuring password strength polic
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Specific user and global settings T
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v token authentication v certificat
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The entry level = unauthenticated m
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Table 20. Example integer values fo
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pdadmin> pop modify test set ipauth
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Quality of protection POP policy Th
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128 IBM Tivoli Access Manager for e
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Overview of the authentication proc
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Managing session state A secure con
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This value corresponds to the numbe
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eauthenticating the user. WebSEAL u
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v Because the cookies are available
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Authentication configuration overvi
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Configuring multiple authentication
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3. When the client makes an additio
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You can configure the username and
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Configuration conditions If forms a
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If the security policy does require
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Setting Description accept-client-c
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Thus, the default value for cert-ca
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HTTP header authentication Tivoli A
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See also: v “Authentication metho
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Token authentication Tivoli Access
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2. WebSEAL returns an authenticatio
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Page 196 and 197: authenticates using forms authentic
Page 198 and 199: Administrators can configure WebSEA
Page 200 and 201: cookie. By using the cookie, the We
Page 202 and 203: Specify the protocol for failover c
Page 204 and 205: Backwards compatibility WebSEAL ser
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Page 216 and 217: Switch user authentication The WebS
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Page 220 and 221: supported mechanism, an additional
Page 222 and 223: The authentication method parameter
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Page 228 and 229: Server-side request caching This se
Page 230 and 231: v “Modifying request-body-max-rea
Page 232 and 233: Configuring reauthentication based
Page 234 and 235: Extending the session cache entry l
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Page 248 and 249: Credential refresh This section con
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Page 256 and 257: Managing client-side and server-sid
Page 258 and 259: At installation, WebSEAL uses the s
Page 260 and 261: Setting the maximum number of cache
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Page 266 and 267: Each WebSEAL instance must have a s
Page 268 and 269: highly secure password, such as a r
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Page 272 and 273: v When a problem occurs, consider e
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Page 288 and 289: 4. After successful login, the MAS
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owser is Microsoft Internet Explore
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1. Enabling and disabling e-communi
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[e-community-domain-keys] dA.com =
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For example: [e-community-sso] vf-u
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[server] pre-510-compatible-tokens
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[ecsso-incoming-attributes] my_spec
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WebSEAL junctions overview You can
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Managing junctions with Web Portal
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Configuring a basic WebSEAL junctio
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Mutually authenticated SSL junction
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v It is highly recommended that you
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WebSEAL-to-WebSEAL junctions over S
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v “Processing URLs in requests”
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Modifying absolute URLs with script
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To solve this problem: 1. Always wr
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You must create the jmt.conf mappin
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Part 2: -j junctions modify Set-Coo
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Supplying client identity in HTTP h
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[junction] max-webseal-header-size
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ack-end server UUID to each front-e
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v Back-end server 2 is called APP2
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lcp_uri URI encoded local code page
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v Do not mark any certificate in th
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1. Copy query_contents.sh into a fu
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Typical output looks like: 100 inde
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Configuring BA headers for single s
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Forwarding original client BA heade
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Using global sign-on (GSO) Tivoli A
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Configuring a GSO-enabled WebSEAL j
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Configuring single sign-on to IBM W
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Configuring single sign-on forms au
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WebSEAL parses the HTML page to ide
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[loginpage1] login-page = /cgi-bin/
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It is not necessary to specify hidd
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Supporting CGI programming To suppo
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Supporting back-end server-side app
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v Short name of the server v IP add
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pdadmin> objectspace create /Resour
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A single user that logs in multiple
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Note: If you use Web Portal Manager
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Object Space Entry URL Template /ow
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The following sample dynurl.conf fi
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The security policy To provide suit
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Overview of ADI retrieval The Tivol
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The resource-manager-provided-adi p
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Retrieving ADI from the user creden
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Dynamic ADI retrieval Rules can be
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Basic configuration Basic configura
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trace_verbose_get_entitlement If se
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Erandt_Securtities_Entitlements e
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http://ese.erant.com/attributes 1 U
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376 IBM v v /opt/pdwebars/protocol_
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Windows C:\Program Files\Tivoli\PDW
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including tracking CGI types, compi
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Stanza organization The remainder o
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Server configuration v [server] v [
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HTTP/1.1 connection timeout, in sec
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Location of the file that contains
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Enable or disable support for UTF-8
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Specifies how WebSEAL responds to r
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Host name of the LDAP server. The W
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cache-group-expire-time = number_of
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String that specifies the key label
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Active Directory [uraf-ad] stanza a
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ind-pwd = admin_password Encoded ad
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LDAP port number for the Lotus Domi
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Secure Socket Layer [ssl] stanza we
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Disables support for SSL Version 2.
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Port number for communication with
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Indicates whether automatic refresh
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Authentication methods [ba] stanza
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Specifies how to handle certificate
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Step-up authentication levels. WebS
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Fully qualified path for a library
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failover-certificate = fully_qualif
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Authentication failover v [failover
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List of attributes from the origina
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Cross-domain single sign-on v [cdss
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attribute_pattern = {preserve|refre
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Integer value specifying the port n
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File names for keys for any domains
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List of string values to specify th
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Integer value for lifetime, in seco
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Content This section contains the f
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Specifies how standard WebSEAL HTML
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Page containing a change password f
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Automatic redirect v [acnt-mgt] v [
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List containing system environment
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Relative path name to a graphics fi
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Content compression v [compress-mim
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Content encodings [content-encoding
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Junction management [junction] stan
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Positive integer value indicating t
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Document filtering [filter-url] sta
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Scheme filtering [filter-schemes] s
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Script filtering v [script-filterin
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Credential refresh [credential-refr
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Integer value that specifies the ti
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Integer value that specifies the ti
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Enables or disables the requests lo
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Auditing [aznapi-configuration] sta
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Specifies event logging for the spe
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The maximum size of the in-memory p
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Policy server v [policy-director] v
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Specifies the type of access the us
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v state Mechanisms for maintaining
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Specifies the purpose of the inform
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Specifies the recipients of the inf
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For example, if the configured name
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-p port TCP port of the back-end th
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IBM may use or distribute any of th
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asic authentication configuring 145
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F failover authentication configura
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key management (continued) managing
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eauthentication (continued) based o
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User Registry Adapter Framework (UR
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