Red Hat Enterprise Linux (RHEL) / CentOS : Managing Network Services

Objectives : Learn Red Hat Enterprise Server Network Services Management.
Who can benefit: Linux technicians and administrators.
Prerequisites: A clear understanding of basic Linux administration.
Learning technique : Clear, theoretical course content divided into lessons and extensive LABS available on-line 24/24 7/7.
Duration : 35 hours.
Instructor : Certified LPI.
Student Progression : Student progression is monitored both in terms of effective course duration and in terms of student comprehension using self-assessment tests.
Resources : CentOS 7 Virtual Appliance.

• Starting and stopping network services under Systemd
  • Systemd
  • The systemctl command
  • Configuration files
  • The systemd-analyze command
  • Managing services under Systemd

• Managing the Network
  • TCP/IP
    • Messages, Datagrams and Segments
    • Establishing a TCP connection
    • The TCP header
    • The UDP header
    • Fragmentation and Re-encapsulation
    • TCPv4 Classes
    • Subnet Masks
      • Variable Length Subnet Masks - VLSM
    • Ports and sockets
  • Configuring a Network Client under Linux
    • /etc/services
    • Ethernet address resolution with arp
  • Configuring TCP/IP on RHEL 6
    • DHCP
      • /etc/sysconfig/network
      • /etc/sysconfig/network-scripts/ifcfg-ethX (où X=0,1 …)
    • Fixed IP Address
      • /etc/sysconfig/network
      • /etc/sysconfig/network-scripts/ifcfg-ethX (où X=0,1 …)
    • The hostname command
    • The ifconfig command
    • Manually bringing up and down a network interface
    • The /etc/networks file
    • IP address resolution
      • /etc/resolv.conf
      • /etc/nsswitch.conf
      • /etc/hosts
  • Configuring TCP/IP on RHEL 7
    • The nmcli command
    • Connections and Profiles
    • Adding a second IP address to an existing profile
    • The hostname command
    • The ip command
    • Manually bringing up and down a network interface
  • Network Services
    • xinetd
    • TCP Wrapper
  • Network Diagostic Commands
    • ping
    • ping6
    • netstat-i
    • traceroute
    • traceroute 6
    • tracepath6
  • Static Routing Tables on RHEL 6
    • The route Command
    • The netstat Command
    • Turning routing ON/OFF
  • Static Routing Tables on RHEL 7
    • The ip Command
    • Turning routing ON/OFF
  • Remote Administration
    • Telnet
    • ssh
    • wget
    • ftp
    • scp
  • Administrating an NFS server
    • Presentation
      • NFSv3 services and processes
      • NFSv3 services and processes
      • Basic commands
    • Server installation
    • Client installation
    • The rpcinfo command
    • The nfsstat command
  • Packet Sniffers
    • TCPdump
    • Wireshark
  • Port Scanners
    • nmap
    • netcat
  • The Netfilter Firewall
    • Introduction
    • Configuration using scripts on RHEL 6
    • Configuration using firewalld on RHEL 7
  • Cryptology
    • Public Key Infrastructures
      • X509 Certificates
    • SSH and SCP
    • SSH Tunneling

• Managing the DNS, NTP, FTP and DHCP servers
  • The DNS server
    • Pre-installation configuration
    • Installation
    • Configuration files
      • named.ca
      • named.conf
      • Zones
        • Type
        • File
        • db.fenestros.loc.hosts
        • db.2.0.10.hosts
    • rndc
      • The rndc key
      • Configuration files
    • LAB #1 - Install and configure bind9
  • The Time server
    • Introduction
    • Installation
    • The ntp.conf file
    • LAB #2 - Installing and configuring ntp
  • The vsftpd FTP server
    • Installation
    • Basic configuration
    • /etc/ftpusers
    • vsftpd Anonymous server
      • Configuration
    • Virtual users
      • Introduction
      • Configuration
    • LAB #3 - Installing and configuring vsftpd
  • The DHCP server
    • Introduction
    • Installation
    • Basic configuration
      • The dhcpd.conf file

• Managing the Samba server
  • Microsoft networking
    • Microsoft network types
    • Windows client types
  • Understanding Samba,
    • Samba Daemons
    • Samba commands
  • Installation
    • Basic configuration
    • Manually starting Samba,
    • SAmba configuration
    • Managing accounts and groups
    • Creating the smbpasswd file
    • Understanding the smb.conf file
      • Sécurité = share
      • Sécurité = user
    • Testing Samba.

• Managing the Postfix server.
  • Sendmail basic configuration
  • Installation & Configuration
    • Installation
    • Basic Configuration
    • Dovecot
  • Advanced configurations
    • Défining Aliases
    • SMTP AUTH
    • SSL

• Managing the Apache server
  • Presentation and Configuration
    • Testing Apache
      • with telnet
      • with a browser
    • Configuring the global environment and the main server
      • /etc/httpd/conf/httpd.conf
      • /etc/httpd/conf.d/autoindex.conf
      • /etc/httpd/conf.d/userdir.conf
      • /etc/httpd/conf.d/welcome.conf
      • /etc/httpd/conf.modules.d/00-*.conf
      • /etc/httpd/conf.d/local.conf
    • Virtual servers
      • Named virtual hosts
      • IP based virtual hosts
  • Additional modules
    • mod_userdir
    • mod_php
    • mod_auth_basic
    • mod_auth_mysql
    • mod_authnz_ldap
    • mod_ssl
    • mod_proxy
    • mod_dav
    • mod-rewrite
    • mod_header
    • mod_suexec

• Managing OpenLDAP
  • Presentation
    • What is LDAP?
      • The X.500 protocol
      • LDAP v3
    • How does LDAP work?
      • LDAP information model
      • DN versus RDN
    • LDAP structure
      • Attributes
        • User attributes
        • Operational attributes
        • Object classes
        • OID's
        • Schemas
  • Installing the LDAP server
  • Configuring the LDAP server
    • The local LDAP directory
    • Referrals
    • Replication
  • Configuration files
    • slapd.conf
      • include
      • allow
      • referral
      • pidfile
      • argsfile
      • modulepath
      • moduleload
      • TLSCACertificateFile, TLSCertificateFile & TLSCertificateKeyFile
      • security
      • access to
      • database config
      • backend
      • suffix DN
      • checkpoint
      • rootdn <DN>
      • rootpw <mot de passe>
      • directory
      • index
      • replogfile <filename>
      • replica host <hostname>[:<port>] [bindmethod={ simple | kerberos | sasl }]
      • loglevel
      • password-hash
      • schemacheck
      • idletimeout
      • sizelimit
      • timelimit
      • readonly <on | off>
      • lastmod <on | off>
    • /etc/openldap/ldap.conf
    • cn=config
    • Securing the directory
      • Creating an adlinistrative password
      • Implementing SSL
  • Creating and maintaining the databases
    • The LDIF format
    • Creating a database online
      • The ldapadd command
      • Using the luma graphical client
      • The Directory Information Tree
      • alias
      • attributes
      • classes
      • schemas
      • referrals
      • The ldapsearch command
      • The ldapmodify command
      • The ldapdelete command
    • Creating a database offline
      • The slapadd command
    • Maintaining an LDAP database
      • The slapcat command
      • The slapindex command
      • The slapdn command
      • The slaptest command
      • The slapauth command
  • LAB #1 - Replication
    • Preparation
    • Replication
      • Configuring the supply server
      • Configuring the consumer server
      • Tests