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Implementing Single Point Security Administration

Implementing Single Point Security Administration
The following sections explain how to implement single point security administration for Tuxedo and WebLogic Server from the Tuxedo point of view:
Note:
What Single Point Security Administration Means
If you have both Tuxedo and WebLogic Server deployed in your environment, then you have to manage two sets of security information. Single point security administration allows you to leverage the WebLogic Server security to manage your security database by eliminating user and group information from Tuxedo. You can use WebLogic Server as your security database to authenticate Tuxedo users.
Note:
If you are specifying SECURITY=ACL or SECURITY=MANDATORY_ACL in the RESOURCES section of the UBBCONFIG file, then you must continue to maintain tpgrp and tpacl files in Tuxedo.
The single point security administration feature leverages the enhanced WebLogic Server 7.0 security and the LDAP to allow single point security administration. You can maintain user security information in WebLogic Server embedded LDAP server and use the WebLogic Server Console to administer the security information from a single system. You must modify the UBBCONFIG file to enable single point security.
Single Point Security Administration Tasks
To set up single point security, you must provide the Tuxedo security information to the WebLogic Server-embedded LDAP server. This includes migrating or setting up the Tuxedo user (UID) and group (GID) information in WebLogic Server LDAP server so that authentication can be successful. For Tuxedo UID and GID values to be available to WebLogic Server, you must use the tpmigldap utility, modify the tpusr file manually with a text editor, or enter the user information via the WebLogic Administration Console.
Note:
Single point security administration consists of the following tasks:
See Also
http://e-docs.bea.com/wls/docs81/security.html
Setting up LAUTHSVR as the Authentication Server
LAUTHSVR is a System /T provided server that offers the authentication service while the user security information is located in WebLogic Server. To enable the single security administration feature, you must configure LAUTHSVR as the authentication server. At runtime, the LAUTHSVR will retrieve the user information from the WebLogic Server-embedded LDAP and authenticate users. If the authentication is successful, an appkey is returned to the user, otherwise, authentication fails.
Note:
For more GAUTHSVR information, see Setting up GAUTHSVR as the Authentication Server on page 4‑16 and GAUTHSVR(5), in the Oracle Tuxedo File Formats, Data Descriptions, MIBs, and System Processes Reference.
To define LAUTHSVR as the authentication server, you must define the following parameters in the UBBCONFIG file:
SECURITY must be set to USER_AUTH, ACL, or MANDATORY_ACL in the RESOURCES section.
LAUTHSVR must be specified in the SERVERS section.
Note:
If LAUTHSVR cannot find a valid configuration file or the file does not exist, it will log an error message in USERLOG and fail to boot. The default LAUTHSVR configuration file is $TUXDIR/udataobj/tpldap and is provided with the product.
LAUTHSVR Command Line Interface
The LAUTHSVR is the LDAP-based authentication server for Tuxedo. It requires a configuration file, that by default is $TUXDIR/udataobj/tpldap. You can create your own LAUTHSVR configuration file or use the default tpldap file that is available with the product.
The command line interface syntax for LAUTHSVR is as follows:
-f full_pathname
Specifies the full pathname of the LAUTHSVR configuration file.
Note:
If -f option is omitted, the default LAUTHSVR configuration file tpldap is used.
The following example instructs LAUTHSVR to use the default configuration file, tpldap, in the $TUXDIR/udataobj directory.
LAUTHSVR SRVGRP=GROUP1 SRVID=2 CLOPT=”-A-”
In the following example, LAUTHSVR uses the myauthsvr.conf configuration file in the /home/tuxedo/bankapp directory.
LAUTHSVR SRVGRP=GROUP1 SRVID=2
CLOPT=”-A-- -f/home/tuxedo/bankapp/myauthsvr.conf”
Setting Up the LAUTHSVR Configuration File
LAUTHSVR supports an input configuration file that contains information such as bind DN and an unencrypted password for bind DN. This configuration file is a plain text file and can be edited using any text editor and must be protected by the system using file permissions. By default the configuration file, named tpldap, is located in $TUXDIR/udataobj directory. You can overwrite this file in the command line for LAUTHSVR. The LAUTHSVR configuration file contains keyword and value pairs as defined in Table 4‑1.
Syntax Requirements for LAUTHSVR Configuration File
Although the default values for the LAUTHSVR configuration file are usually sufficient, a system administrator may choose to configure it with different names. Therefore, you should be aware of the following requirements for the LAUTHSVR configuration file:
The LAUTHSVR configuration file is a plain text file.
Note:
LAUTHSVR Configuration File Keywords
Table 4‑1 defines the LAUTHSVR configuration file keywords.
Note:
The only required keyword in the LAUTHSVR configuration file is PASSWORD, which specifies the password for bind DN. All other keywords are optional.
 
LDAP search base. The default is “ou=people, ou=myrealm, dc=mydomain”, where myrealm is the name of the security realm and mydomain is the name of the WebLogic Server domain.
A comma separated list of WebLogic hostnames and ports. The syntax is [//]hostname[:port][,[//]hostname[:port]...]. The default value for port is 7001. If LDAP_ADDR is not specified, LAUTHSVR assumes localhost:7001 is the location to contact the LDAP server.
Valid values are LDAP or LOCAL, or both separated by a comma. If you specify LOCAL, the search order will use the tpusr file. The default is LDAP.
The full pathname of the tpusr file to be used if LOCAL search order is enabled. The default value is $APPDIR/tpusr.
Note:
If a directory path is specified other than the default $APPDIR/tpusr, the file must be generated using Tuxedo MIB or tpusradd command line utility. Failure to do this may cause authentication failure.
Example LAUTHSVR Configuration File
Listing 4‑1 shows an example of a LAUTHSVR configuration file.
Listing 4‑1 Example LAUTHSVR Configuration File
#
# Tuxedo LDAP Authentication Server configuration file.
#
# created: Thu May 26 15:36:59 2002
#
FILE_VERSION         1
LDAP_VERSION         3
BINDDN               cn=Admin
BASE                 ou=people,ou=myrealm,dc=mydomain
UID                  uid
PASSWORD             secret
LDAP_ADDR             //PLUTO:7001,//Saturn:7001
EXPIRE               0
SRCH_ORDER            LDAP
WLS_DOMAIN            mydomain
WLS_REALM             myrealm
ADM_GROUP             Administrators
OP_GROUP             Operators
TUX_UID_KW           TUXEDO_UID
TUX_GID_KW            TUXEDO_GID
# end of file
 
WARNING:
Because the PASSWORD for the LDAP administrator is in clear text, it is recommended that the system administrator guards this file with correct access permission.
Example UBBCONFIG Using LAUTHSVR
Listing 4‑2 shows an example UBBCONFIG file with SECURITY set to ACL and LAUTHSVR defined.
Listing 4‑2 Example UBBCONFIG File Using LAUTHSVR
*RESOURCES

IPCKEY        51002
MASTER        site1
MAXACCESSERS  50
MAXSERVERS    20
MAXSERVICES   20
MODEL        SHM
LDBAL        N
BLOCKTIME     10
SECURITY      ACL
AUTHSVC       "..AUTHSVC"

*MACHINES
DEFAULT:
       APPDIR="/home/tuxedo/application"
       TUXCONFIG="/home/tuxedo/application/TUXCONFIG"
       TUXDIR="/home/tuxedo/tux81"
Server1        LMID=site1
                     MAXWSCLIENTS=20

*GROUPS
GROUP1        LMID=site1 GRPNO=1
GROUP2        LMID=site1 GRPNO=2
GROUP3        LMID=site1 GRPNO=3
GROUP4        LMID=site1 GRPNO=4

*SERVERS
DEFAULT:
       CLOPT="-A" RESTART=N MAXGEN=5
LAUTHSVR       SRVGRP=GROUP1 SRVID=10
CLOPT="-A -- -F /home/tuxedo/application/lauthsvr.conf "
DMADM         SRVGRP=GROUP2 SRVID=20
GWADM         SRVGRP=GROUP3 SRVID=30
GWTDOMAIN      SRVGRP=GROUP3 SRVID=31
Simpserv       SRVGRP=GROUP4 SRVID=40
*SERVICES
TOUPPER
 
Using Multiple Network Addresses for High Availability
It is possible to configure more than one network address for a WebLogic Server domain. This may be a favorable configuration in order to provide high availability for user authentication. The user security information is replicated to all WebLogic Server-embedded LDAP servers in a WebLogic domain. LAUTHSVR can only connect to one server at a time; however, when a network error occurs, LAUTHSVR will try to connect to the next available address.
To configure multiple network addresses for LAUTHSVR, use the LDAP_ADDR keyword in the LAUTHSVR configuration file. The order in which the hostnames are specified is the order in which LAUTHSVR will try to connect. To use caching during authentication, specify the EXPIRE keyword. The value in this keyword will determine the number of seconds the cached entry is available in the local process memory.
Note:
It is not required to have WebLogic Server available when you boot Tuxedo using tmboot; however, without the availability of at least one WebLogic Server, LAUTHSVRs ability to authenticate users is limited.
Without the availability of WebLogic Server, you can boot Tuxedo and authenticate users using SRCH_ORDER LOCAL. In this case, the user authentication is verified against the tpusr file. For more information about search order, refer to Configuring the Database Search Order on page 4‑9.
Example LAUTHSVR Configuration of Multiple Network Addresses
The following example specifies multiple network addresses in the LDAP_ADDR keyword.
LDAP_ADDR //Pluto:8000,//Saturn,Jupiter
The previous example specifies three WebLogic Server hostnames. The first server runs on Pluto and uses address 8000. The second server runs on Saturn and uses the default address 7001. The third server runs on Jupiter and also uses the default address 7001.
Configuring the Database Search Order
By default the LAUTHSVR authentication server will search the user information in the WebLogic Server-embedded LDAP server. To enable the use of the tpusr file in the database search, you must specify LOCAL in the SRCH_ORDER keyword. The order that the comma separated values are defined in the SRCH_ORDER keyword will specify the order in which LAUTHSVR searches for user information. LAUTHSVR will search the LDAP server or the tpusr file or both (according to the order of the values specified).
If there are two or more SRCH_ORDER entries specified in the LAUTHSVR configuration file, only the last entry takes effect. In this case a warning message is logged in USERLOG as well. A warning message also results if you specify a value other than LDAP or LOCAL in the SRCH_ORDER keyword. In this case, the invalid entry is discarded and the default value or a previous valid SRCH_ORDER entry is used.
Example LAUTHSVR Configuration for Database Search Order
The following example specifies that LAUTHSVR should search the WebLogic Server-embedded LDAP server first for user information. If the user information is not found in the LDAP server, then LAUTHSVR should look in the tpusr file.
SRCH_ORDER LDAP,LOCAL
The following example specifies that LAUTHSVR should search the tpusr file first for user information. If the user information is not found in the tpusr file, then LAUTHSVR should look in the WebLogic Server-embedded LDAP server for the information.
SRCH_ORDER LOCAL,LDAP
The following example specifies that LAUTHSVR should search the tpusr file only for user information.
SRCH_ORDER LOCAL
See Also
“LAUTHSVR(5)” and “GAUTHSVR(5)” in the Oracle Tuxedo File Formats, Data Descriptions, MIBs, and System Processes Reference.
Using tpmigldap to Migrate User Information to WebLogic Server
You should use the tpmigldap command utility to migrate Tuxedo user and group information to WebLogic Server.
Assigning New Passwords for the tpusr File
Before migrating the user and group information, the administrator must assign new passwords for each user so the migration can be successful. This step is required because the passwords in the tpusr file are encrypted with one-way encryption; therefore, it is impossible to retrieve the original password from the file.
There are two ways to handle this password situation:
Modify the tpusr file.
You can modify the tpusr file using a text editor and change the user password for each user in the file. The password field is the second field in the tpusr file. The field delimiter is a colon (:). Each user takes up a line in the tpusr file.
The following example:
TuxedoUser1:ADdg0w8nfGMag:6001:601:TPCLTNM,*::
TuxedoUser2:0Yq2s6FjbvuU2:6002:601:TPCLTNM,*::
could be modified to:
TuxedoUser1:User1Password:6001:601:TPCLTNM,*::
TuxedoUser2:User2Password:6002:601:TPCLTNM,*::
Use the -f option with the tpmigldap utility to define a default password for all users.
If a -f option is used, then the argument that follows will be used as a substitute for the password field in the tpusr file for every user in the file.
The following example command:
tpmigldap -f userpassword -c
will cause “userpassword” to be assigned to every user in the tpusr file. After the migration, all users will have to use “userpassword” as their password in order to join the Tuxedo application.
tpmigldap Command Line Options
Table 4‑2 defines the command line options for the tpmigldap utility. The order of the command line options does not matter.
Note:
The tpmigldap command requires the use of -w or -c so the user or group can be added to the WebLogic Server-embedded LDAP database.
 
See Also
“tpmigldap(1)” in the Oracle Tuxedo Command Reference
Adding New Tuxedo User Information
There are two methods for adding new user and group information to the single security LDAP database:
Add new information to the tpusr text file and then specify the updated file when using the migration utility tpmigldap. Refer to Adding New User Information in tpusr or tpgrp on page 4‑13.
Note:
Adding New User Information in tpusr or tpgrp
To add new user information to the single point security LDAP database:
1.
Use your existing tpusr file and tpgrp file to add the new user and group information. Be sure to use the same format previously defined in the file. Be sure to use clear text passwords to add to the LDAP database.
2.
Run the tpmigldap utility using the -u option and specify the updated tpusr file and the -g option and specify the updated tpgrp file. For example:
tpmigldap -u $APPDIR/tpusr -g $APPDIR/tpgrp
Adding New User Information Using the WebLogic Administration Console
To add new user information to the single point security LDAP database using the WebLogic Administration Console:
1.
Access the WebLogic Administration Console and select Security Realms myrealm where myrealm represents the LDAP security realm.
2.
Enter the user information:
In the Name field specifies the user name.
In the Description field specify the Tuxedo UID and GID values as a string in the following syntax:
<TUXEDO UID KEYWORD>=<decimal value>
<TUXEDO GID KEYWORD>=<decimal value>
where by default, the TUXEDO UID KEYWORD is TUXEDO_UID and TUXEDO GID KEYWORD by default is TUXEDO_GID. For example:
TUXEDO_UID=2504 TUXEDO_GID=601.
In the Password field, specify the password for the user. Then confirm the password by entering the password again in the Confirm Password field.
3.
Setting up GAUTHSVR as the Authentication Server
GAUTHSVR is a System /T provided server usage is similar to LAUTHSVR, but with the following differences:
GAUTHSVR can access user security information located in a wide variety of LDAP servers (for example, WebLogic, OpenLDAP, Netscape/IPlanet, Microsoft Active Directory, z/OS LDAP, and so on), using LDAP (Lightweight Directory Access Protocol).
Note:
You can also configure WebLogic authentication using LAUTHSVR. GAUTHSVR can be used along with an existing LAUTHSVR or replace it.
For more LAUTHSVR information, see Setting up LAUTHSVR as the Authentication Server on page 4‑2 and “LAUTHSVR(5),” in the Oracle Tuxedo File Formats, Data Descriptions, MIBs, and System Processes Reference.
GAUTHSVR syntax does not support multiple network addresses for high availability. For more information, see Using Multiple Network Addresses for High Availability on page 4‑9.
GAUTHSVR does not support user security information stored in a local file. For more information, see Configuring the Database Search Order on page 4‑9.
To enable the single security administration feature, GAUTHSVR must be configured as the authentication server. GAUTHSVR authenticates user security information against LDAP server. It returns appkey if SECURITY is set to ACL or MANDATORY_ACL when authentication success.
To configure GAUTHSVR as the authentication server, you must define the following parameters in the UBBCONFIG file:
SECURITY must be set to USER_AUTH, ACL, or MANDATORY_ACL in the RESOURCES section.
GAUTHSVR must be specified in the SERVERS section.
Note:
If GAUTHSVR cannot find a valid configuration file or the file does not exist, it will log an error message in USERLOG and fail to boot. The default GAUTHSVR configuration file is $TUXDIR/udataobj/tpgauth and is provided with the product.
GAUTHSVR Command Line Interface
GAUTHSVR is an LDAP-based authentication server for Tuxedo. It requires a configuration file, that by default is $TUXDIR/udataobj/tpgauth.
The command line interface syntax for GAUTHSVR is as follows:
-f config
Specifies the full pathname of the GAUTHSVR configuration file.
-o gaconfig.xml
Specifies the full pathname of the GAUTHSVR internal configuration file generated from customer configuration file specified by -f option. The default value is $APPDIR/gaconfig.xml.
-k gakey.dat
Specifies the full pathname of the GAUTHSVR internal configuration file generated from the configuration file (specified in the -f option). The default value is $APPDIR/gakey.dat.
-v
Verbose mode. Logs more detailed messages to ULOG.
The following example instructs GAUTHSVR to use the default configuration file, tpgauth, in the $TUXDIR/udataobj/tpgauth directory.
GAUTHSVR SRVGRP=GROUP1 SRVID=2 CLOPT=”-A --”
In the following example, GAUTHSVR use the myauthsvr.conf configuration file in the /home/tuxedo/bankapp directory.
GAUTHSVR SRVGRP=GROUP1 SRVID=2
CLOPT=”-A -- -f/home/tuxedo/bankapp/myauthsvr.conf”
GAUTHSVR updates the generated XML file if tpgauth is newer than the generated XML and key files. Only changed or newly added tpgauth items are updated in the generated XML file.
Note:
If the XML and key file are not present when GAUTHSVR is booted, GAUTHSVR creates them automatically.
Setting Up the GAUTHSVR Configuration File
GAUTHSVR supports an input configuration file that contains information such as bind DN and an unencrypted password for bind DN. This configuration file is a plain text file and can be edited using any text editor and must be protected by the system using file permissions. By default the configuration file, named tpgauth, is located in $TUXDIR/udataobj/tpgauth directory. You can overwrite this file in the command line for GAUTHSVR. Table 4‑3 lists keywords and value pairs contained in the GAUTHSVR configuration file.
Syntax Requirements for GAUTHSVR Configuration File
Although the default values for the GAUTHSVR configuration file are usually sufficient, you can choose to configure it with different names. Therefore, you should be aware of the following requirements for the GAUTHSVR configuration file:
The GAUTHSVR configuration file is a plain text file.
Blank lines or lines starting with a # sign are treated as comments, and are ignored.
The Principal must have privileges to access the LDAP database (usually the LDAP administrator).
GAUTHSVR Configuration File Keywords
GAUTHSVR keywords are divided into three groups: basic, advanced, and LDAP schema. Table 4‑3, Table 4‑4, and Table 4‑5 define the GAUTHSVR configuration file keywords accordingly.
 
The default value is 0 (indicating no limit).
 
If set to false, a referral exception is sent when referrals are encountered during LDAP requests.
 
The default value is ou=people, o=example.com
The default value is (&(cn=%u)(objectclass=person))
The default value is ou=groups, o=example.com.
The default value is (&(cn=%g)(objectclass=groupofuniquenames)).
The default value is groupofuniquenames.
Example GAUTHSVR Configuration File
Listing 4‑3 shows a GAUTHSVR configuration file for WebLogic Server example. Please refer to this example when configuring other LDAP servers.
Listing 4‑3 Example WebLogic GAUTHSVR Configuration File
#
# Tuxedo LDAP Authentication Server configuration file.
#
# created: Thu May 26 15:36:59 2002
# end of file
# Tuxedo configuration
UserCacheExpire = 600
UserCacheSize = 16384
SYSADM = sysadm
SYSOP = sysop

# LDAP server configuration
Host = server.bea.com
Port = 7001
Principal = cn=Admin
Credential= weblogic

UserObjectClass = person
UserBaseDN = ou=people,ou=myrealm,dc=examples
UserFromNameFilter = (&(uid=%u)(objectclass=person))
UserUIDAttrName = description
UserGroupAttrNames=wlsMemberOf
RetrieveUIDAndGID = true
UIDAttrValueType = UIDAndGID
 
WARNING:
Because the PASSWORD for the LDAP administrator is in clear text, it is recommended that the system administrator guards this file with correct access permission.
Example UBBCONFIG Using GAUTHSVR
Listing 4‑4 shows an example UBBCONFIG file with SECURITY set to ACL and GAUTHSVR defined.
Listing 4‑4 Example UBBCONFIG File Using GAUTHSVR
# UBBCONFIG
*SERVER
GAUTHSVR SVRGRP="SYSGRP" SVRID=100
              CLOPT="-A -- -f ${APPDIR}/tpgauth"
              ENVFILE="${APPDIR}/tpgauth.env"
 
See Also
“GAUTHSVR(5)” and “LAUTHSVR(5)” in the Oracle Tuxedo File Formats, Data Descriptions, MIBs, and System Processes Reference
Using tpmigldif to Migrate User Information
You can use the tpmigldif command utility to migrate Tuxedo user and group information to LDAP servers in LDAP Interchange Format (LDIF). In order to use tpmigldif, you must create a migration template.
Using tpmigldif Command Line Options
Table 4‑6 lists the command line options for the tpmigldif utility. The order of the command line options does not matter.
 
tpusr and tpgrp File Format
Listing 4‑5 shows a tpusr file with five fields separated by a colon:
name:password(encrypted):user id:group id:client name::
Listing 4‑5 Example tpusr File
user1:EI4xxxjrCc:16668:601:TPCLTNM,client::
user2:EI4xxxjrCc:16669:602:TPCLTNM,client::
 
Listing 4‑6 shows a tpgrp file with three fields separated by a colon:
name::group id:
Listing 4‑6 Example tpgrp File
group1::601:
group2::602:
 
Assigning New Passwords for the tpusr File (Optional)
Before migrating the user and group information, the administrator could assign new passwords for each user so the generated LDIF output contains correct password for each user. This step is required because the passwords in the tpusr file are encrypted with one-way encryption; therefore, it is impossible to retrieve the original password from the file.
Using a text-editor, there are two methods you can use to modify tpusr file passwords:
Modify the tpusr file password field to change the user password for each user in the file. The password field is the second field in the tpusr file. Each user is entered on a separate line in the tpusr file. See listing Listing 4‑5, for original tpusr file example.
user1:pwd1:16668:601:TPCLTNM,client::
user2:pwd2:16669:602:TPCLTNM,client:
user1:EI4xxxjrCc:16668:601:TPCLTNM,client::pwd1:
user2:EI4xxxjrCc:16669:602:TPCLTNM,client::pwd2:
Creating a Migration Template
The migration template is a text file used by the tpmigldif command utility to translate the tpusr or tpgrp file into an LDIF output file.
Listing 4‑7 shows a tpusr-template migration file example. <%n> refers to a tpusr file field, where n starts at 1.
Note:
Use <%gn> for group field in tpgrp file for given user.
Listing 4‑7 tpusr-template
dn: CN=<%1>,CN=Users,DC=tuxdev,DC=bea,dc=com
objectclass: top
objectclass: person
objectclass: organizationalPerson
objectclass: user
cn: <%1>
description: Tuxedo User, TUXEDO_UID=<%3> TUXEDO_GID=<%4>
password: <%7>
 
Listing 4‑8 shows the LDIF output from the tpusr-template.
Listing 4‑8 LDIF Output
dn: CN=user1,CN=Users,DC=tuxdev,DC=bea,dc=com
objectclass: top
objectclass: person
objectclass: organizationalPerson
objectclass: user
cn: user1
description: Tuxedo User, TUXEDO_UID=16668 TUXEDO_GID=601
password: pwd1

dn: CN=user2,CN=Users,DC=tuxdev,DC=bea,dc=com
objectclass: top
objectclass: person
objectclass: organizationalPerson
objectclass: user
cn: user2
description: Tuxedo User, TUXEDO_UID=16669 TUXEDO_GID=602
password: pwd2
 
Supported LDAP Server Template Example
Tuxedo provides an example template for supported LDAP servers. The files are listed in Table 4‑7.
 
Table 4‑7 Supported LDAP Server Template Example1
Active Directory2
z/OS LDAP, with RACF backend3

1
All files are available under $TUXDIR/udataobj;

2
For Active Directory user’s password cannot be added on creation. For help on how to change or reset it, please refer to Microsoft support document, http://support.microsoft.com/kb/269190, http://support.microsoft.com/kb/263991, etc;

3
Two things need to be done to activate z/OS RACF account after migration: i) reset the password by z/OS administrator; and ii) logon with the account to change its password.

See Also
tpmigldif(1) in the Oracle Tuxedo Command Reference

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