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

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v token authentication v certificate authentication Authentication strength is supported over both HTTP and HTTPS, with the exception of certificate authentication. Since certificates are valid only over an SSL connection, it is not possible to step up to certificates over HTTP. If an object that requires certificate authentication is requested over HTTP, an error page will be served, as specified by the certstepup entry in the [acnt-mgt] stanza of the WebSEAL configuration file. Administrators apply the authentication levels to a protected resource by declaring and attaching a Tivoli Access Manager protected object policy (POP) to the resource object. The POP is a standard Tivoli Access Manager POP. Authentication strength policy is set and stored in a POP attribute called an IP Endpoint Authentication Method. The attribute takes an integer value that represents the authentication level. The lowest level, unauthenticated, is always 0. Each level increases the integer index up to the total number of authentication methods that have been assigned a level. When clients first authenticate to WebSEAL, the authentication method used is stored as an extended attribute in the client’s credential. The Tivoli Access Manager authorization service compares the authentication method (level) in the credential against the authentication level for the requested resource, as specified in the POP. When the level in the POP exceeds the level in the credential, the user is prompted to increase the authentication strength level. The IP Endpoint Authentication Method attribute can also optionally be used to restrict access to a resource, based on the network address of the client that sent the access request. The access can be restricted based on an individual network (IP) address, or a range of network addresses. WebSEAL uses the following algorithm to process the conditions in a POP: 1. Check the IP endpoint authentication method policy on the POP. 2. Check ACL permissions. 3. Check time-of-day policy on the POP. 4. Check the audit level policy on the POP. 118 IBM Tivoli Access Manager for e-business: WebSEAL Administration Guide
Authentication strength configuration To configure authentication strength levels, complete the instructions in each of the following sections: 1. “Establish an authentication strength policy” 2. Stop the WebSEAL server. 3. “Specify authentication levels” 4. “Specify the authentication strength login form” on page 120 5. Restart the WebSEAL server. 6. “Create a protected object policy” on page 121 7. “Specify network-based access restrictions” on page 122 8. “Attach a protected object policy to a protected resource” on page 124 9. “Enforce user identity match across authentication levels” on page 125 Establish an authentication strength policy This section consists of planning steps to be taken before specifying authentication strength settings in the WebSEAL configuration file. Complete the following steps: 1. Compile a list of protected objects for which access will be limited only to users who have successfully authenticated through a specific authentication method. For each protected object, specify the authentication method that applies. 2. Compile a complete list of all authentication mechanisms that will be active (enabled) on the WebSEAL server system. 3. Determine a hierarchy (ranking) for the active authentication mechanisms. Order the mechanisms from weakest to strongest. 4. Determine if, during authentication strength level step-up, the user identity must be identical across the increased authentication level. 5. Determine if any protected resources require access restriction based on the network address of the requesting client. Specify authentication levels Complete the following steps: 1. Edit the [authentication-levels] stanza in the WebSEAL configuration file. For each authentication method to be used for authentication level step-up, add an entry to the stanza. The supported authentication methods are described in the following table: Table 19. Authentication methods supported for authentication strength Authentication method Configuration file entry (none) level = unauthenticated Basic authentication Forms authentication level = password Token authentication level = token Certificate authentication level = certificate The default entries are: [authentication-levels] level = unauthenticated level = password Chapter 5. WebSEAL security policy 119
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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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Page 112 and 113: HTTP error message pages When WebSE
Page 114 and 115: Filename Title Description HTTP Err
Page 116 and 117: Managing custom account management
Page 118 and 119: Macro Description %CERTAUTHN% Subst
Page 120 and 121: Backup and restore Tivoli Access Ma
Page 122 and 123: Problem determination tools for Web
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authenticates using forms authentic
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Administrators can configure WebSEA
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cookie. By using the cookie, the We
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Specify the protocol for failover c
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Backwards compatibility WebSEAL ser
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[failover-add-attributes] attribute
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v When this value is no, and the se
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SPNEGO protocol and Kerberos authen
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v The client cannot use an SSL sess
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186 IBM Tivoli Access Manager for e
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Switch user authentication The WebS
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9. The administrator ends the switc
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supported mechanism, an additional
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The authentication method parameter
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The default file name is switchuser
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xauthn_username xauthn_qop xauthn_i
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Server-side request caching This se
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v “Modifying request-body-max-rea
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Configuring reauthentication based
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Extending the session cache entry l
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Configuring reauthentication based
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Extending the session cache entry l
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Automatic redirection during user l
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Configuring post password change pr
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WebSEAL provides an external authen
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credattrs_email joeuser@bigco.com c
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Credential refresh This section con
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The default lifetime of data in the
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Credential refresh configuration To
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efresh can succeed. Likewise, when
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Managing client-side and server-sid
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At installation, WebSEAL uses the s
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Setting the maximum number of cache
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Windows desktop single sign-on This
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v Failover authentication The failo
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Each WebSEAL instance must have a s
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highly secure password, such as a r
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Note: The location of the kinit uti
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v When a problem occurs, consider e
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The link contains a special CDSSO m
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2. Edit /etc/nsswitch.conf so the h
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[authentication-mechanisms] sso-cre
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http://websealB/resource.html?PD-ID
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Each entry in the WebSEAL is assign
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e-community single sign-on E-commun
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A user who fails authentication wit
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4. After successful login, the MAS
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v The domain-specific cookie contai
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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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346 IBM automatically with no user
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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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