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

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Configuring authorization database updates and polling The Tivoli Access Manager policy server (pdmgrd) manages the master authorization policy database and maintains location information about other Tivoli Access Manager servers in the secure domain. A Tivoli Access Manager administrator can make security policy changes to the secure domain at any time. The policy server makes the necessary adjustments to the master authorization database whenever security policy changes are implemented. When the policy server makes a change to the master authorization database, it can send out notification of this change to all replica databases in the secure domain that support individual policy enforcers (such as WebSEAL). The policy enforcers must then request an actual database update from the master authorization database. WebSEAL, as a resource manager and policy enforcer, has three options to obtain information about authorization database changes: v Listen for update notifications from the policy server (configurable and enabled by default). v Check (poll) the master authorization database at regular intervals (configurable and disabled by default). v Enable both listening and polling. The [aznapi-configuration] stanza of the WebSEAL configuration file contains parameters for configuring update notification listening and database polling. The path to WebSEAL’s local replica authorization policy database is defined by the db-file parameter: [aznapi-configuration] db-file = /var/pdweb/db/webseald.db Configuring update notification listening The listen-flags parameter, found in the [aznapi-configuration] stanza, enables and disables update notification listening by WebSEAL. By default, listening is disabled. To disable listening, enter ″enable″. [aznapi-configuration] listen-flags = enable The ssl-listening-port parameter, found in the [ssl] stanza, configures the SSL port for the listener: [ssl] ssl-listening-port = 7234 Configuring authorization database polling You can configure WebSEAL to regularly poll the master authorization database for update information. The cache-refresh-interval parameter can be set to ″default″, ″disable″, or a specific time interval in seconds. The ″default″ setting is equal to 600 seconds. By default, polling is disabled. [aznapi-configuration] cache-refresh-interval = disable 40 IBM Tivoli Access Manager for e-business: WebSEAL Administration Guide
Managing worker thread allocation v “Configuring WebSEAL worker threads” on page 41 v “Allocating worker threads for junctions (junction fairness)” on page 42 v “Configuration on AIX” Configuring WebSEAL worker threads The number of configured worker threads specifies the number of concurrent incoming requests that can be serviced by a server. Other connections that arrive when all worker threads are busy will be buffered until a worker thread is available. You can set the number of threads available to service incoming connections to WebSEAL. Configuring the number of worker threads should be done carefully due to possible performance impacts. This configuration parameter does not impose an upper boundary on the number of simultaneous connections. This parameter simply specifies the number of threads made available to service a potentially unlimited work queue. Choosing the optimal number of worker threads depends on understanding the quantity and type of traffic on your network. In all cases, you must only enter a value that is less than the worker threads limit imposed by the operating system. By increasing the number of threads, you are, in general, decreasing the average time it takes to finish the requests. However, increasing the number of threads impacts other factors that could have an adverse effect on server performance. WebSEAL maintains a single, generic worker list and worker threads pool for handling requests from clients using TCP or SSL. This enhanced mechanism enables WebSEAL to consume fewer system resources while handling significantly greater load. You can configure the worker thread pool size by setting the worker-threads parameter in the [server] stanza portion of the WebSEAL configuration file. [server] worker-threads = 50 Note: The value of this parameter must remain within the worker threads limits set by the operating system. Configuration on AIX On AIX systems only, when the WebSEAL worker threads limit in the [server] stanza of the WebSEAL configuration file is increased beyond the default of 50 to a value greater than 800 on an AIX system, WebSEAL can fail and produce a core dump. Workaround: Increase the AIX process size limits to unlimited as follows: 1. Locate the limits file in the /etc/security directory. 2. Search for the word default and find parameters for cpu, rss, and data. Default settings are as follows: data = 262144 rss = 65536 Chapter 2. WebSEAL server configuration 41
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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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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
Page 30 and 31: IBM Tivoli Access Manager WebSEAL:
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
Page 40 and 41: A unified Web space simplifies the
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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 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
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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
Page 88 and 89: The session cookie links to session
Page 90 and 91: Table 4. P3P default header values
Page 92 and 93: Table 6. Supported values for the c
Page 94 and 95: For each value specified for purpos
Page 96 and 97: example, when your compact policy s
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Page 100 and 101: Server tasks Start a WebSEAL server
Page 102 and 103: Managing the Web space The followin
Page 104 and 105: You can configure the specific grap
Page 106 and 107: Parameter Description cache-type Sp
Page 108 and 109: HTTP data compression WebSEAL serve
Page 110 and 111: Compression policy in POPs You can
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
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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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