Topic 390: OpenLDAP

Configuration 390.1 OpenLDAP Replication

Description: Candidates should be familiar with the server replication available with OpenLDAP.

Weight: 3

Key Knowledge Areas:

• Replication concepts
• Configure OpenLDAP replication
• Analyze replication log files
• Understand replica hubs
• LDAP referrals
• LDAP sync replication

The following is a partial list of the used files, terms and utilities:

• master / slave server
• multi-master replication
• consumer
• replica hub
• one-shot mode
• referral
• syncrepl
• pull-based / push-based synchronization
• refreshOnly and refreshAndPersist
• replog

 

390.2 Securing the Directory

Description: Candidates should be able to configure encrypted access to the LDAP directory, and restrict access at the firewall level.
Weight: 3

Key Knowledge Areas:

• Securing the directory with SSL and TLS
• Firewall considerations
• Unauthenticated access methods
• User / password authentication methods
• Maintanence of SASL user DB
• Client / server certificates

Terms and Utilities:

• SSL / TLS
• Security Strength Factors (SSF)
• SASL
• proxy authorization
• StartTLS
• iptables

 

390.3 OpenLDAP Server Performance Tuning

Weight: 2

Description: Candidates should be capable of measuring the performance of an LDAP server, and tuning configuration directives.

Key Knowledge Areas:

• Measure OpenLDAP performance
• Tune software configuration to increase performance
• Understand indexes

Terms and Utilities:

• index
• DB_CONFIG

Topic 391: OpenLDAP as an Authentication Backend

391.1 LDAP Integration with PAM and NSS

Weight: 2

Description: Candidates should be able to configure PAM and NSS to retrieve information from an LDAP directory.

Key Knowledge Areas:

• Configure PAM to use LDAP for authentication
• Configure NSS to retrieve information from LDAP
• Configure PAM modules in various Unix environments

Terms and Utilities:

• PAM
• NSS
• /etc/pam.d/
• /etc/nsswitch.conf

 

391.2 Integrating LDAP with Active Directory and Kerberos

Weight: 2

Description: Candidates should be able to integrate LDAP with Active Directory Services.

Key Knowledge Areas:

• Kerberos integration with LDAP
• Cross platform authentication
• Single sign-on concepts
• Integration and compatibility limitations between OpenLDAP and Active Directory

Terms and Utilities:

• Kerberos
• Active Directory
• single sign-on
• DNS

Topic 392: Samba Basics style="text-align: left;">392.1 Samba Concepts and Architecture

Weight: 2

Description: Candidates should understand the essential concepts of Samba. As well, the major differences between Samba3 and Samba4 should be known.

Key Knowledge Areas:

• Understand the roles of the Samba daemons and components
• Understand key issues regarding heterogeneous networks
• Identify key TCP/UDP ports used with SMB/CIFS
• Knowledge of Samba3 and Samba4 differences

The following is a partial list of the used files, terms and utilities:

• /etc/services
• Samba daemons: smbd, nmbd, samba, winbindd

 

392.2 Configure Samba

Weight: 4

Description: Candidates should be able to configure the Samba daemons for a wide variety of purposes.

Key Knowledge Areas:

• Knowledge of Samba server configuration file structure
• Knowledge of Samba variables and configuration parameters
• Troubleshoot and debug configuration problems with Samba

Terms and Utilities:

• smb.conf
• smb.conf parameters
• smb.conf variables
• testparm
• secrets.tdb

 

392.3 Regular Samba Maintenance

Weight: 2

Description: Candidates should know about the various tools and utilities that are part of a Samba installation.

Key Knowledge Areas:

• Monitor and interact with running Samba daemons
• Perform regular backups of Samba configuration and state data

Terms and Utilities:

• smbcontrol
• smbstatus
• tdbbackup

 

392.4 Troubleshooting Samba

Weight: 2

Description: Candidates should understand the structure of trivial database files and know how troubleshoot problems.

Key Knowledge Areas:

• Configure Samba logging
• Backup TDB files
• Restore TDB files
• Identify TDB file corruption
• Edit / list TDB file content

Terms and Utilities:

• /var/log/samba/
• log level
• debuglevel
• smbpasswd
• pdbedit
• secrets.tdb
• tdbbackup
• tdbdump
• tdbrestore
• tdbtool

 

392.5 Internationalization

Weight: 1

Description: Candidates should be able to work with internationalization character codes and code pages.

Key Knowledge Areas:

• Understand internationalization character codes and code pages
• Understand the difference in the name space between Windows and Linux/Unix with respect to share, file and directory names in a non-English environment
• Understand the difference in the name space between Windows and Linux/Unix with respect to user and group naming in a non-English environment
• Understand the difference in the name space between Windows and Linux/Unix with respect to computer naming in a non-English environment

Terms and Utilities:

• internationalization
• character codes
• code pages
• smb.conf
• dos charset, display charset and unix charset

Topic 393: Samba Share Configuration

393.1 File Services

Weight: 4

Description: Candidates should be able to create and configure file shares in a mixed environment.

Key Knowledge Areas:

• Create and configure file sharing
• Plan file service migration
• Limit access to IPC$
• Create scripts for user and group handling of file shares
• Samba share access configuration parameters

Terms and Utilities:

• smb.conf
• [homes]
• smbcquotas
• smbsh
• browseable, writeable, valid users, write list, read list, read only and guest ok
• IPC$
• mount, smbmount

393.2 Linux File System and Share/Service Permissions

Weight: 3

Description: Candidates should understand file permissions on a Linux file system in a mixed environment.

Key Knowledge Areas:

• Knowledge of file / directory permission control
• Understand how Samba interacts with Linux file system permissions and ACLs
• Use Samba VFS to store Windows ACLs

Terms and Utilities:

• smb.conf
• chmod, chown
• create mask, directory mask, force create mode, force directory mode
• smbcacls
• getfacl, setfacl
• vfs_acl_xattr, vfs_acl_tdb and vfs objects

 

393.3 Print Services

Weight: 2

Description: Candidates should be able to create and manage print shares in a mixed environment.

Key Knowledge Areas:

• Create and configure printer sharing
• Configure integration between Samba and CUPS
• Manage Windows print drivers and configure downloading of print drivers
• Configure [print$]
• Understand security concerns with printer sharing
• Uploading printer drivers for Point’n’Print driver installation using ‘Add Print Driver Wizard’ in Windows

Terms and Utilities:

• smb.conf
• [print$]
• CUPS
• cupsd.conf
• /var/spool/samba/.
• smbspool
• rpcclient
• net

Topic 394: Samba User and Group Management

394.1 Managing User Accounts and Groups

Weight: 4

Description: Candidates should be able to manage user and group accounts in a mixed environment.

Key Knowledge Areas:

• Manager user and group accounts
• Understand user and group mapping
• Knowledge of user account management tools
• Use of the smbpasswd program
• Force ownership of file and directory objects

Terms and Utilities:

• pdbedit
• smb.conf
• samba-tool user (with subcommands)
• samba-tool group (with subcommands)
• smbpasswd
• /etc/passwd
• /etc/group
• force user, force group.
• idmap

 

394.2 Authentication, Authorization and Winbind

Weight: 5

Description: Candidates should understand the various authentication mechanisms and configure access control. Candidates should be able to install and configure the Winbind service.

Key Knowledge Areas:

• Setup a local password database
• Perform password synchronization
• Knowledge of different passdb backends
• Convert between Samba passdb backends
• Integrate Samba with LDAP
• Configure Winbind service
• Configure PAM and NSS

Terms and Utilities:

• smb.conf
• smbpasswd, tdbsam, ldapsam
• passdb backend
• libnss_winbind
• libpam_winbind
• libpam_smbpass
• wbinfo
• getent
• SID and foreign SID
• /etc/passwd
• /etc/group

Topic 395: Samba Domain Integration

395.1 Samba as a PDC and BDC

Weight: 3

Description: Candidates should be able to setup and maintain primary and backup domain controllers. Candidates should be able to manage Windows/Linux client access to the NT-Style domains.

Key Knowledge Areas:

• Understand and configure domain membership and trust relationships
• Create and maintain a primary domain controller with Samba3 and Samba4
• Create and maintain a backup domain controller with Samba3 and Samba4
• Add computers to an existing domain
• Configure logon scripts
• Configure roaming profiles
• Configure system policies

Terms and Utilities:

• smb.conf
• security mode
• server role
• domain logons
• domain master
• logon script
• logon path
• NTConfig.pol
• net
• profiles
• add machine script
• profile acls

 

395.2 Samba4 as an AD compatible Domain Controller

Weight: 3

Description: Candidates should be able to configure Samba 4 as an AD Domain Controller.

Key Knowledge Areas:

• Configure and test Samba 4 as an AD DC
• Using smbclient to confirm AD operation
• Understand how Samba integrates with AD services: DNS, Kerberos, NTP, LDAP

Terms and Utilities:

• smb.conf
• server role
• samba-tool domain (with subcommands)
• samba

 

395.3 Configure Samba as a Domain Member Server

Weight: 3

Description: Candidates should be able to integrate Linux servers into an environment where Active Directory is present.

Key Knowledge Areas:

• Joining Samba to an existing NT4 domain
• Joining Samba to an existing AD domain
• Ability to obtain a TGT from a KDC

Terms and Utilities:

• smb.conf
• server role
• server security
• net command
• kinit, TGT and REALM

Topic 396: Samba Name Services

396.1 NetBIOS and WINS

Weight: 3

Description: Candidates should be familiar with NetBIOS/WINS concepts and understand network browsing.

Key Knowledge Areas:

• Understand WINS concepts
• Understand NetBIOS concepts
• Understand the role of a local master browser
• Understand the role of a domain master browser
• Understand the role of Samba as a WINS server
• Understand name resolution
• Configure Samba as a WINS server
• Configure WINS replication
• Understand NetBIOS browsing and browser elections
• Understand NETBIOS name types

Terms and Utilities:

• smb.conf
• nmblookup
• smbclient
• name resolve order
• lmhosts
• wins support, wins server, wins proxy, dns proxy
• domain master, os level, preferred master

 

396.2 Active Directory Name Resolution

Weight: 2

Description: Candidates should be familiar with the internal DNS server with Samba4.

Key Knowledge Areas:

• Understand and manage DNS for Samba4 as an AD Domain Controller
• DNS forwarding with the internal DNS server of Samba4

Terms and Utilities:

• samba-tool dns (with subcommands)
• smb.conf
• dns forwarder
• /etc/resolv.conf
• dig, host

Topic 397: Working with Linux and Windows Clients

397.1 CIFS Integration

Weight: 3

Description: Candidates should be comfortable working with CIFS in a mixed environment.

Key Knowledge Areas:

• Understand SMB/CIFS concepts
• Access and mount remote CIFS shares from a Linux client
• Securely storing CIFS credentials
• Understand features and benefits of CIFS
• Understand permissions and file ownership of remote CIFS shares

Terms and Utilities:

• SMB/CIFS
• mount, mount.cifs
• smbclient
• smbget
• smbtar
• smbtree
• findsmb
• smb.conf
• smbcquotas
• /etc/fstab

 

397.2 Working with Windows Clients

Weight: 2

Description: Candidates should be able to interact with remote Windows clients, and configure Windows workstations to access file and print services from Linux servers.

Key Knowledge Areas:

• Knowledge of Windows clients
• Explore browse lists and SMB clients from Windows
• Share file / print resources from Windows
• Use of the smbclient program
• Use of the Windows net utility

Terms and Utilities:

• Windows net command
• smbclient
• control panel
• rdesktop
• workgroup