Introduction to LDAP Concepts and Applications

• Introduction - Features
  • Discuss LDAP history
  • Enumerate key features
  • Discuss typical LDAP applications
  • Compare and contrast LDAP namespace to DNS namespace
  • Discuss key offline|online administrative tools
  • Identify key systems to be used
•  
• LDAP Concepts
  • Explore target Directory Information Tree (DIT)
  • Discuss Distinguished Names (DNs)
  • Directory Information Tree (DIT)
  • Discuss Object Classes
  • Discuss Attributes
  • Discuss the importance of Schemas
  • Explain how LDAP interacts with PAM and NSS to authenticate users
•  
• Master Server Configuration
  • Explore PAM and NSS configuration
  • Install and explore OpenLDAP packages
  • Configure Master server to serve the default LDAP namespace
  • Initiate LDAP server
•  
• Define Directory Information Tree (DIT)
  • Search the default DIT using 'ldapsearch'
  • Update /etc/hosts files with participating LDAP servers
  • Use LDAP Browser GUI to explore LDAP DIT
  • Explain LDIF entries
  • Create the top-level LDAP DIT container object using 'ldapadd' with LDIF file
  • Create second-level Organizational Units (OUs) for functional groups
  • Create users within each second-level OU
  • Verify results
  • Attempt to create duplicate entries
•  
• Configure Replication
  • Discuss features and benefits
  • Explore network topology
  • Install required packages on LDAP replication partner (replica)
  • Enumerate and execute replication configuration steps
  • Evaluate results on master and replica LDAP servers
•  
• LDAP on Solaris Configuration
  • Discuss features and benefits
  • Download and install LDAP and required packages
  • Update /etc/hosts configuration on replica
  • Configure server as LDAP replica
  • Verify results
•  
• LDAP Add
  • Discuss features and benefits
  • Explain 'ldapadd' usage
  • Add users to remaining OUs
  • Verify results
  • Use 'ldapadd' with: STDIN and LDIF file
  • Use 'ldapadd' from replica
  • Evaluate results using 'ldapsearch' and LDAP Browser GUI
•  
• LDAP Delete
  • Discuss features and benefits
  • Explain 'ldapdelete' usage
  • Delete specific LDAP objects remotely
  • Evaluate results
  • Delete multiple LDAP objects using STDIN and LDIF
  • Evaluate results
  • Use 'ldapsearch' to derive applicable LDIF statements
  • Attempt to delete non-existing and existing items
  • Evaluate results using: 'ldapsearch' and LDAP Browser GUI
•  
• LDAP Modify
  • Discuss features and benefits
  • Confirm current state of DIT on master and replicas using 'ldapsearch'
  • Rebuild the DIT using 'ldapmodify'
  • Confirm results with LDAP Browser GUI
  • Modify attributes using 'ldapmodify' with LDIF
  • Delete objects using 'ldapmodify'
  • Evaluate results
•  
• LDAP Search
• Discuss features and benefits
• Discuss supported boolean operators
• Discuss filter operators
• Use wildcards in searches
• Peform string searches
• Search distinct OUs for all object types
• Search the DIT for OUs
• Search the DIT for specific attributes
• Search the DIT for specific user objects
• Perform boolean searches
• Evaluate results
•  
• Logging
  • Discuss features and applications
  • Explore master server logging and syslog configuration
  • Discuss debugging levels
  • Start LDAP server in desired debug level
  • Evaluate results
  • Vary logging verbosity
  • Configure logging on replica server
  • Evaluate results
•  
• LDIF
  • Discuss features and benfits
  • Use 'ldapsearch' to explore LDIF entries
  • Discuss LDIF structure
  • Discuss key object types
  • Create a new user object using LDIF
  • Delete using LDIF
  • Modify using LDIF
  • Evaluate results
•  
• LDAP Schemas
  • Discuss features and benefits
  • Explain applicability
  • Examine 'slapd.conf'
  • Explore default schema files on master and replica servers
  • Correlate schemas to LDIF entries
•  
• Migrate to LDAP Authentication
  • Discuss features and benefits
  • Migrate primary server to LDAP authentication
  • Confirm configuration
  • Migrate replica servers to LDAP authentication
  • Evaluate results
  • Migrate local users from master and replica servers to LDAP DIT
  • Confirm results using 'ldapsearch'
  • Confirm authentication of LDAP users on master and replica servers
  • Migrate other useful Linux|Unix tables
•  
• Syncrepl Replication
  • Discuss features and benefits
  • Migrate from 'slurpd' to 'syncrepl'
  • Evaluate results
•  
• LDAP Security
  • Discuss features and benefits
  • Explore Access Control Lists (ACLs)
  • Configure SSL/TLS encryption
  • Evaluate results
•  

Sums

• Various Tools
• Remote Confirmations
• File Metadata
• File Fragments
• Compress Content
• Archive Content
• DIR Hierarchy
• Password Sums
• Shared Secret
• Restrict History
• Downloaded Content
• Encrypt Content
• Site Credentials
• Site COOKIE
• Site COOKIE - Unique

CentOS9x Stream Administration

• Initial Environment
• ls, pwd, cd, cp, mv, rm, mkdir, rmdir, whoami
• alias, cat, file, chmod, chown, history
• STD(IN|OUT), Pipes, Redirection, Command Chaining
• ps, df, top, free
• Pagers, W-Commands
• Checksums
• Awk | Sed | Grep Usage
• BASH SHELL Environment
• Compression | Archival Tools
• SSH Equivalence
• SHELL Quoting
• Propagate Environment
• Secure Clients

• Identify Standard File Types
• Standard File Permissions
• Symbolic Links
• Transfer Permissions

• Identify SWAP environment
• Provision dedicated SWAP partitions
• Add | Remove SWAP from pool as needed
• Provision File System-based SWAP
• SWAP Share
• SWAP Persistence
• Identify default storage configuration
• Provision new storage as needed
• XFS - File System
• XFS - Grow File System
• Identify LVM defaults
• Add new partitions to LVM management
• Allocate storage to LVM Volume Groups
• Create Logical Volumes (LVs) as needed
• Overlay File System and mount where applicables
• LVM - Resize
• LVM - Mixed FS
• LVM - SWAP

• Features
• Install
• Defaults
• General Usage
• Update Accounts

• Defaults
• Shared PASS Gen
• Unique PASS Gen
• Encrypted PASS Gen
• Update Accounts
• Groups

• Discuss features | limitations
• Identify default system-wide schedule
• Peruse various default Cron Jobs
• Schedule simple job and monitor recurrence
• Evaluate results

• Peruse Default CONF
• Discuss Syslog Rules
• Explore Log Rotate defaults
• Ensure rotated logs are compressed
• Extend default retention scheme
• Force Log Rotation as needed

• Explore Default environment
• Install PKGs
• Dump important metadata from packages
• Apply Updates

• Default CONF
• Add | Confirm IPs as needed

• Install
• Copy Configuration
• SELinux - Confirm
• TLS | SSL Services
• cURL Client Tests
• Virtual Hosts
• ENC Sites Only

• SFTP Only USER
• SFTP Only USER - NOLOGIN
• SFTP Only Group - Control
• NMap Intro

SysLOG with rSysLogD

• Discuss Features
• Default Environment
• Kernel Firewall LOG
• Split LOGs by Priorities
• UDP | TCP Logging
• Dual L4 Logging
• Multiple Hosts
• Basic Queueing
• Reliable Event Logging Protocol (RELP)
• RELP - Remote Only
• RELP Only
• Traditional to RELP
• SysLOG Clear-Text - Confirm
• Property Filters
• Expression Filters
• Relay Chain

Netfilter Tables

• Features
• SSHGuard
• Ruleset Basics
• Persistence
• Sample Rules
• Inbound Filtering
• Dormant Table
• Manage Tables | Chains | Rules
• Counters
• Sets
• LOG Basics
• LOG with Sets
• Closed-Port LOGs
• LOG Options
• Re-Route LOGs
• Jump Targets
• Chain Jumping
• GoTo Chains
• Meta Selectors

Debian 12x Administration

• Features
• Download
• Graphical Install
• Text Install
• Post-Install Tweaks

• Explore usage of the following useful commands
• tty | /dev/pts | w | whoami | who
• set | env | export | unset
• cat | echo | touch | rm
• pwd | ls | cd | mkdir | alias | umask
• head | tail
• dd
• find
• history
• STDIN, STDOUT, STDERR, UNIX Pipes, Redirection, Command Chaining
• ps, df, free, top, dd
• stat, which, w, who
• tar | gzip | bzip2 | xz
• ZSH Setup

• Network Tools | IP Configuration
• Examine default IP configuration
• Extend IP configuration to facilitate additional addresses
• Static IP Config
• Dual: Dynamic | Static Config
• Multiple Interfaces
• Dual Network Services
• Confirm communications

PHP One-Liners

• General Usage
• Count Lines
• Word Count
• Count Chars
• Split Lines into ARRAY
• Count Instances of Fields
• Transform Delimiters
• Anonymize LOGs
• Extract Unique SRCs
• Lines by Error Code
• LOG By Code
• Summarize Error Codes
• Pre-Seed Error Codes
• Random Strings
• Varied Passwords
• Expose Undefined Passwords
• Outdated Passwords
• Hash | Un-Hash

Cloud Storage with GlusterFS

• Discuss Features:
• Default Volume Type
• Common Volume Types
• Transport Types
• File System Support
• Storage Model

• Features
• Provision Storage
• Allocate GlusterFS Brick
• Persistence
• Generate IO
• Multiple File Systems
• Various Sizes
• Stop | Remove Volume
• Reconstitute Volume
• Server Mount
• Evaluate

OpenPGP with GPG

• Discuss Features:
• Primary Tool
• Private | Public Keys
• Public Key Cryptography Standards (PKCS)
• Encryption | Decryption
• Signing | Verification

• Features
• General Usage
• Create Content
• Encrypt
• PassPhrase Protect
• Binary | Text Encryption
• Share
• Decrypt

SSL-TLS with OpenSSL

• Discuss Features:
• Primary Tool
• Private | Public Keys
• Certificate Signing Requests (CSRs)
• Self-Signed Certificates
• Public Key Cryptography Standards (PKCS)
• Encryption | Decryption
• Random String Generation
• Message Digests
• SSL-TLS Client

• Features
• General Usage
• Retrieve Site Certificates
• Determine OCSP Configuration
• Probe supported TLS Versions
• Extract Certificate for local usage
• Retrieve Certificate with NMap
• Retrieve Certificate Chain

• Discuss
• Generate Private Keys
• Generate Correlating CSRs
• Confirm Keys | CSRs
• Self-Signed Certificates

SSH Variables

• Discuss Features
• Bare VARs
• SSH Client
• Double Quotes
• Single Quotes
• SSH Environment

SHELL Variables

• Discuss Features
• Terminal (TTY)
• CLI Arguments
• Process ID
• Backgrounded
• SHELL Local
• Environment
• Persistence
• Aliases
• Command Substitution
• Increment | Decrement
• Dynamism