Linux Network Services Administration

I.     Course Prefix/Number: CIS 238

       Course Name: Linux Network Services Administration

       Credits: 3 (3 lecture; 1 lab)

II.    Prerequisite


III.   Course (Catalog) Description

Course covers LINUX network services and administration using the LINUX operating system. Content includes: network technology and terms; TCP/IP installation and configuration; network hardware installation; secure INETD “super daemon” installation and TCPD wrappers; configuration of network services - Domain Name Services (DNS); DHCP; Apache (Web server); SMTP/SENDMAIL; File Transfer Protocol (FTP) server, Network File Server (NFS); SAMBA (Windows Network Server); Secure Shell (SSH); Secure Socket Layer; firewalls and packet filters; and packet sniffers and intrusion detections systems. Credit cannot be received for both CIS 238 and CNS 238.  Recommended: CIS 228 or CNS 228 or comparable knowledge or consent of the instructor or program coordinator.

IV.   Learning Objectives

Upon completion of this course the student should be able to:

  1. Explain basic networking technology and terminology
  2. Install and configure LINUX network hardware
  3. Explain basic TCP/IP technology and terminology in a LAN/WAN network
  4. Install LINUX/LINUX INETD Internet services “super daemon”
  5. Install and configure basic Internet services: DNS, DHCP, HTTP (Apache/Web), FTP, SMTP/Sendmail, IMAP/POP3, TELNET, LINUX Printing Services (LPR/LPD)
  6. Install and configure LINUX LAN network services: SAMBA (Windows server), NWE (Netware), Network File System (NFS)
  7. Secure network services via configuration options
  8. Secure networks and servers using TCPD Wrappers, packer filters and firewalls
  9. Install network utilities for packet filters, intrusion detection systems, packet sniffers, port mappers
  10. Demonstrate the use of encryption services: VPN, IPSEC, Secure Shell (SSH), Secure Socket layer (SSL), Certificate Services
  11. Secure network and server installation practices and procedures

V.    Academic Integrity and Student Conduct

Students and employees at Oakton Community College are required to demonstrate academic integrity and follow Oakton's Code of Academic Conduct. This code prohibits:

• cheating,
• plagiarism (turning in work not written by you, or lacking proper citation),
• falsification and fabrication (lying or distorting the truth),
• helping others to cheat,
• unauthorized changes on official documents,
• pretending to be someone else or having someone else pretend to be you,
• making or accepting bribes, special favors, or threats, and
• any other behavior that violates academic integrity.

There are serious consequences to violations of the academic integrity policy. Oakton's policies and procedures provide students a fair hearing if a complaint is made against you. If you are found to have violated the policy, the minimum penalty is failure on the assignment and, a disciplinary record will be established and kept on file in the office of the Vice President for Student Affairs for a period of 3 years.

Please review the Code of Academic Conduct and the Code of Student Conduct, both located online at

VI.   Sequence of Topics

  1. Internet Protocols, Services, Concepts and Utilities
    1. TCP/IP concepts and implementation
    2. Internet tools: Route, finger, nslookup, netstat, traceroute
    3. Internet applications: Telnet, FTP, DNS, Routing, SMTP, HTTP, LPR/LPD
  2. LINUX Network Components
    1. Connecting to Networks: Network Interface Card installation, chkconfig
    2. XINETD Services, XINETD Daemon Installation, /etc/services
    3. Securing XINETD services, TCPD wrappers
  3. DHCP Overview
    1. Installing and configuring a DHCP server
  4. Basic connectivity services
    1. FTP Server (authenticated and anonymous)
    2. TELNET Server
    3. LINUX Printing: LPR, LPD
  5. Domain Name Service (DNS) Basics
    1. Client-side (resolver) DNS setup
    2. Server-side DNS setup, Berkeley Internet Name Daemon (BIND)
    3. Configuration DNS File Basics: CONF file, Zone Files, Main Record Types
    4. Delegating Subdomains, Caching-only Name Server
    5. BIND Utilities: NSLOOKUP, DIG
  6. Web server basics
    1. Web Browsers
    2. Apache installation and configuration
    3. Virtual Hosts, Apache Namespace Configuration
    4. CGI
  7. Internet E-Mail, SMTP
    1. E-Mail basics: MTA, MUA, SMTP, POP, IMAP
    2. M4 Macro process
    3. SENDMAIL installation and configuration
    4. SENDMAIL files and directories
  8. Windows Networking Basics (SAMBA)
    1. NETBIOS technology and terminology, SMB, Domains, WINS
    2. SAMBA Installation and configuration
    3. File and directory sharing
    4. Authentication methods
    5. SAMBA tools: smbclient, nmblookup, smbmount
  9. Network File System (NFS)
    1. NFS Client setup
    2. NFS Server installation and configuration
    3. NFS file and directory sharing
  10. Securing Networks
    1. "Promiscuous" mode adapters
    2. Packet Filtering – IPCHAINS
    3. Chain Operations: Rule targets, Matching
    4. Network Address Translation, Masquerading
    5. Firewalls: IPTABLES
    6. Intrusion Detection: SNORT, Port Mappers (NMAP), Packet “sniffers”
  11. Securing Data
    1. Encryption basics: Public/Private Key, Session Key
    2. Secure Shell (SSH): Client tools - SSH, SFTP
    3. Secure Shell (SSH) Server
    4. Secure Socket Layer (SSL), Certificates, WEB and FTP Servers

VII.  Methods of Instruction

Program demonstrations, hands-on usage, textbook reading, applicable web site references, lecture, class discussions, group work, and guest speakers may be used.
Course may be taught as face-to-face, hybrid or online course.

VIII. Course Practices Required

Read textbook and assigned journal articles prior to assigned date.  Attendance and participation in class lectures and labs is expected.  Completion of lab assignments, quizzes, and the final exams is required.

IX.   Instructional Materials

Note: Current textbook information for each course and section is available on Oakton's Schedule of Classes.

X.    Methods of Evaluating Student Progress

  1. Quizzes to be determined by instructor
  2. Exams to be determined by instructor
  3. Evaluation of lab exercises
  4. Evaluation of other homework assignments

XI.   Other Course Information

If you have a documented learning, psychological, or physical disability you may be entitled to reasonable academic accommodations or services. To request accommodations or services, contact the Access and Disability Resource Center at the Des Plaines or Skokie campus. All students are expected to fulfill essential course requirements. The College will not waive any essential skill or requirement of a course or degree program.

Oakton Community College is committed to maintaining a campus environment emphasizing the dignity and worth of all members of the community, and complies with all federal and state Title IX requirements.

Resources and support for
  • pregnancy-related and parenting accommodations; and
  • victims of sexual misconduct
can be found at

Resources and support for LGBTQ+ students can be found at

Electronic video and/or audio recording is not permitted during class unless the student obtains written permission from the instructor. In cases where recordings are allowed, such content is restricted to personal use only. Any distribution of such recordings is strictly prohibited. Personal use is defined as use by an individual student for the purpose of studying or completing course assignments.

For students who have been approved for audio and/or video recording of lectures and other classroom activities as a reasonable accommodation by Oakton’s Access Disabilities Resource Center (ADRC), applicable federal law requires instructors to permit those recordings. Such recordings are also limited to personal use. Any distribution of such recordings is strictly prohibited.

Violation of this policy will result in disciplinary action through the Code of Student Conduct.