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

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A unified Web space simplifies the management of all resources for the system administrator. Additional administrative benefits include scalability, load balancing, and high availability. Most commercial Web servers do not have the ability to define a logical Web object space. Instead, their access control is connected to the physical file and directory structure. WebSEAL junctions can transparently define an object space that reflects organizational structure rather than the physical machine and directory structure commonly encountered on standard Web servers. WebSEAL junctions also allow you to create single sign-on solutions. A single sign-on configuration allows a user to access a resource, regardless of the resource’s location, using only one initial login. Any further login requirements from back-end servers are handled transparently to the user. WebSEAL junctions are an important tool for making your Web site scalable. Junctions allow you to respond to increasing demands on a Web site by attaching additional servers. WebSEAL junctions and Web site scalability WebSEAL junctions are used to create a scalable Web site. As the demands on the Web site grow, more servers can easily be added to expand the capabilities of the site. Additional servers can be added for the following reasons: / WebSEAL Web space Combined Web space: WebSEAL plus junctioned server / junction-point Figure 3. WebSEAL junction results in a unified Web space 12 IBM Tivoli Access Manager for e-business: WebSEAL Administration Guide
v To extend the site with additional content v To duplicate existing content for load balancing, failover capability, and high availability Replicated front-end WebSEAL servers Junction support for back-end servers starts with at least one front-end WebSEAL server. Replicated front-end WebSEAL servers provide the site with load balancing during periods of heavy demand. The load balancing mechanism is handled by a mechanism such as IBM Network Dispatcher or Cisco Local Director. Front-end replication also provides the site with fail-over capability—if a server fails for some reason, the remaining replica servers will continue to provide access to the site. Successful load balancing and failover capability results in high availability for users of the site. When you replicate front-end WebSEAL servers, each server must contain an exact copy of the Web space and the junction database. Account information for authentication resides in a user registry that is independent of the front-end servers. Supporting back-end servers Web site content can be served by the WebSEAL server itself, back-end servers, or a combination of both. WebSEAL junction support for back-end servers allows you to scale the Web site through additional content and resources. Each unique back-end server must be junctioned to a separate junction (mount) point. As the demand for additional content grows, more servers can be added through junctions. This scenario provides a solution for networks that have a large existing investment in third-party Web servers. Junctions provide a unified, logical object space. This Web space is transparent to the user and allows for centralized management. Replicated back-end servers To extend scalability features to a back-end server configuration, you can replicate the back-end servers. As is the case with replicated front-end servers, replicated back-end servers must contain Web spaces that are mirror images of each other. WebSEAL load balances across the replicated servers using a ″least-busy″ scheduling algorithm. This algorithm directs each new request to the server with the fewest connections already in progress. WebSEAL also correctly fails-over when a server is down and starts re-using that server after it has been restarted. If the back-end application requires its state to be maintained over several pages, stateful junctions can be used to ensure that each session returns to the same back-end server. Chapter 1. IBM Tivoli Access Manager WebSEAL overview 13
Page 1: IBM Tivoli Access Manager for e-bus
Page 4 and 5: Note Before using this information
Page 6 and 7: Silent configuration overview . . .
Page 8 and 9: Event capturing and logging . . . .
Page 10 and 11: Token authentication concepts . . .
Page 12 and 13: Configuring WebSEAL key database pa
Page 14 and 15: Preserving cookie names . . . . . .
Page 16 and 17: Logging . . . . . . . . . . . . . .
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Page 20 and 21: This chapter introduces you to impo
Page 22 and 23: Web security information v IBM Tivo
Page 24 and 25: v Secure Sockets Layer Introduction
Page 26 and 27: The following documents associated
Page 28 and 29: Monospace Code examples, command li
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Page 32 and 33: The access control list (ACL) An ac
Page 34 and 35: Note: Traditional applications bund
Page 36 and 37: v Authenticated clients access usin
Page 38 and 39: v A user makes a request for a reso
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Page 44 and 45: Server instance configuration This
Page 46 and 47: Table 1. WebSEAL instances sharing
Page 48 and 49: - When the Web document root is not
Page 50 and 51: -ssl_yn ssl_enable_yes_no -key_file
Page 52 and 53: Server instance configuration tasks
Page 54 and 55: Removing a server instance To remov
Page 56 and 57: Communication protocol configuratio
Page 58 and 59: Restricting connections from specif
Page 60 and 61: Cryptographic hardware for encrypti
Page 62 and 63: You can specify whether to enable F
Page 64 and 65: 3. In the Open dialog window, selec
Page 66 and 67: Quality of protection levels You ca
Page 68 and 69: Configuring authorization database
Page 70 and 71: 3. Change the settings for the data
Page 72 and 73: Multi-locale support with UTF-8 Thi
Page 74 and 75: WebSEAL generates logging and audit
Page 76 and 77: Configuring multi-locale support Co
Page 78 and 79: WebSEAL does not recognize UTF-8 en
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Page 82 and 83: Language System Directory English (
Page 84 and 85: Preventing vulnerability caused by
Page 86 and 87: Replicated front-end WebSEAL server
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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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4. Restart the WebSEAL server. See
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Failover authentication This sectio
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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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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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