TN-865: Wireshark Network Traffic and Security Analysis

Course Overview:

This course delivers the technical knowledge, insight, and hands-on training to receive in-depth knowledge on Wireshark® and TCP/IP communications analysis. You will learn to use Wireshark to identify the most common causes of performance problems in TCP/IP communications. You will learn about the underlying theory of TCP/IP and the most used application protocols, so that you can intelligently examine network traffic for performance issues or possible Indicators of Compromise (IoC).

Duration: 5 Days

Audience:

Anyone interested in learning to troubleshoot and optimize TCP/IP networks and analyze network traffic with Wireshark, especially network engineers, information technology specialists, and security analysts.

Course Prerequisites:

We recommend that attendees of this course have the following prerequisite:
• Network+

Dates/Locations:

No Events

Course Outline:

DAY ONE

Course Set Up and Analyzer Testing

Network Analysis Overview
Wireshark Functionality Overview
Capturing Wired and Wireless Traffic
Define Global and Personal Preferences for Faster Analysis
Defined Time Values and Interpret Summaries
Interpret Basic Trace File Statistics to Identify Trends
Create and Apply Display Filters for Efficient Analysis

DAY TWO

Follow Streams and Reassemble Data
Use Wireshark’s Expert System to Identify Anomalies
TCP/IP Analysis Overview
Analyze Common TCP/IP Traffic Patterns

DAY THREE

Graph I/O Rates and TCP Trends
802.11 (WLAN) Analysis Fundamentals
Voice over IP (VoIP) Analysis Fundamentals
Network Forensics Fundamentals

DAY FOUR

Detect Scanning and Discovery Processes
Analyze Suspect Traffic

DAY FIVE

Use Command‐Line Tools

N-325: Implementing Cisco IOS Network Security (IINS)

Course Overview:

Implementing Cisco IOS Network Security (IINS) is an instructor-led course. This five-day course focuses on the necessity of a comprehensive security policy and how it affects the posture of the network. TechNow students each get a Cisco Switch, Router, and an ASA. The in the classrom hardware hands-on component of this course is a priority. Using instructor-led discussions, extensive hands-on lab exercises, and supplemental materials, this course allows learners to understand common security concepts, and deploy basic security techniques utilizing a variety of popular security appliances within a “real-life” network infrastructure. TechNow is an Authorized VUE testing partner and this course concludes with the student taking the 210-260 IINS Cisco Certification Exam.

Duration: 5 days

Audience: Cisco Network Administrators. This course is an excellent precursor to Palo Alto Network Firewall Training

DoD 8140: Not Mandated

Course Prerequisites: CCNA

Course Objectives:

Describe common network security concepts
Secure routing and switching infrastructure
Deploy basic authentication, authorization and accounting services
Deploy basic firewalling services
Deploy basic site-to-site and remote access VPN services
Describe the use of more advanced security services such as intrusion protection, content security and identity management

Attendees to N-325: Implementing Cisco IOS Network Security will receive TechNow approved course materials and expert instruction.

Dates/Locations:

No Events

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TN-575: Open Source Network Security Monitoring

Course Overview:

TN-575: Open Source Network Security Monitoring teaches students how to deploy, build, and run an NSM operation using open source software and vendor-neutral tools. No network is bullet proof and when attackers access your network, this course will show you how to build a security net to detect, contain, and control the attacker. Sensitive data can be monitored and deep packet and deep attachment analysis can be achieved. As organizations stand up a Security Operations Center (SOC) the enterprise NSM is the key ingredient to that SOC. This course not only teaches how to implement an NSM technologically, but how to effectively monitor an enterprise operationally. You will learn how to architect an NSM solution: where to deploy your NSM platforms and how to size them, stand-alone or distributed, and integration into packet analysis, interpret evidence, and integrate threat intelligence from external sources to identify sophisticated attackers. A properly implemented NSM is integral to incident response and provides the responders timely information to react to the incident. TN-575: Open Source Network Security Monitoring is a lab intensive environment with a cyber range that gives each student in-depth knowledge and practical experience monitoring live systems to include: Cisco, Windows, Linux, IoT, and Firewalls.

Attendees to TN-575: Open Source Network Security Monitoring class will receive TechNow approved course materials and expert instruction.

This Course is taught utilizing Security Onion or RockNSM as specified by the customer.

Dates/Locations:

No Events

Duration: 5 Days

Course Objective:

The focus of this course is to present a suite of Open Source security products integrated into a highly functional and scalable Network Security Monitoring solution.

Prerequisites:

Students should have a basic understanding of networks, TCP/IP and standard protocols such as DNS, HTTP, etc. Some Linux knowledge/experience is recommended, but not required

Course Outline:

Network Security Monitoring (NSM) Methodology
High Bandwidth Packet Capture Challenges
Installation of Security Onion
- Use Cases (analysis, lab, stand-alone, distributed)
- Resource Requirements
Configuration
- Setup Phase I – Network Configuration
- Setup Phase 2 – Service Configuration
- Evaluation Mode vs. Configuration Mode
- Verifying Services
Security Onion Architecture
- Configuration Files and Folders
- Network Interfaces
- Docker Environment
- Security Onion Containers
Overview of Security Onion Analyst Tools
- Kibana
- CapME
- CyberChef
- Squert
- Sguil
- NetworkMiner
Quick Review of Wireshark and Packet Analysis
- Display and Capture Filters
- Analyze and Statistics Menu Options
- Analysis for Signatures
Analyzing Alerts
- Replaying Traffic
- 3 Primary Interfaces:
  - Squert
  - Sguil
  - Kibana
- Pivoting Between Interfaces
- Pivoting to Full Packet Capture
Snort and Surricata
- Rule Syntax and Construction
- Implementing Custom Rules
- Implementing Whitelists and Blacklists
Hunting
- Using Kibana to Slice and Dice Logs
- Hunting Workflow with Kibana
Bro
- Introduction and Overview
  - Architecture, Commands
- Understanding and Examining Bro Logs
  - Using AWK, sort, uniq, and bro-cut
- Working with traces/PCAPs
- Bro Scripts Overview
  - Loading and Using Scripts
- Bro Frameworks Overview
  - Bro File Analysis Framework FAF
- Using Bro scripts to carve out more than files
RockNSM ( * If Applicable)
- Kafka
  - Installation and Configuration
  - Kafka Messaging
  - Brokers
  - Integration with Bro and FSF
- File Scanning Framework FSF
  - Custom YARA Signatures
  - JSON Trees
  - Sub-Object Recursion
  - Bro and Suricata Integration
Elastic Stack
- Adding new data sources in Logstash
- Enriching data with Logstash
- Automating with Elastalert
- Building new Kibana dashboards
Production Deployment
- Advanced Setup
- Master vs Sensor
- Node Types – Master, Forward, Heavy, Storage
- Command Line Setup with sosetup.conf
- Architectural Recommendations
- Sensor Placement
- Hardening
- Administration
- Maintenance
Tuning
- Using PulledPork to Disable Rules
- BPF’s to Filter Traffic
- Spinning up Additional Snort / Suricata / Bro Workers to Handle Higher Traffic Loads

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TN-385: TCP/IP Analysis & Implementation

Course Overview:

This course, TN-385: TCP/IP Analysis & Implementation, provides students with a comprehensive technical introduction to TCP/IP & the interworkings of TCP/IP application to UNIX, Linux and Windows in a network environment. This course begins by providing a comprehensive protocol stack analysis. It continues with extensive hands-on exercises needed to configure TCP/IP on UNIX and Windows based networks.

Attendees to TN-385: TCP/IP Analysis & Implementation will receive TechNow approved course materials and expert instruction.

Dates/Locations:

No Events

Duration: 5 Days

Course Objectives:

A thorough comprehension of each level of the protocol stack
Configuring UNIX & Windows to access internetworks
Configuring & setting up a Cisco router
Properly implementing subnets to avoid ongoing maintenance headaches
Routing & routing protocols, RIP, OSPF, and IGRP
How to troubleshoot a wide range of routing problems
All major TCP/IP application services including: FTP, TELNET, SNMP, NFS, DNS, DHCP, & WINS
How to avoid common internetworking problems
How to troubleshoot TCP/IP networks using protocol analysis techniques – snoop on Sun Workstation & Network Monitor on Windows.
How to design, build, configure, & manage TCP/IP internetworks
Applying a structured methodology for troubleshooting TCP/IP internetworks
ACL's on Cisco routers

Prerequisites:

Students should have good end-user skills in TCP/IP (FTP, TELNET, RLOGON, & MAIL).

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Privacy Policy

Effective Date: August 1, 2026

TechNow, Inc. respects the privacy of our students and visitors to our website and is committed to protecting the information entrusted to us.

This Privacy Policy explains what information we collect, how we use it, how we protect it, and the circumstances under which it may be disclosed.

1. Information We Collect

We may collect information necessary to provide and administer our educational courses and related services.

This information may include:

Name
Mailing or billing address
Telephone or mobile phone number
Email address
Course enrollment information
Student account information
Course progress and quiz activity
Information necessary to process course registration and payment
Communications between the student and our organization concerning course administration

We collect only information that is reasonably necessary to operate our courses, administer student accounts, communicate with students, and provide related services.

2. How We Use Student Information

We use student information solely for legitimate business and educational purposes related to the delivery and administration of our courses.

This may include:

Registering students for courses
Creating and maintaining student accounts
Providing access to course materials and quizzes
Communicating course schedules and changes
Sending course reminders and administrative notifications
Communicating logistical information necessary for a course
Communicating urgent or emergency information related to the delivery of a course
Responding to student questions and requests
Administering payments and registrations
Maintaining records necessary to operate our business and educational programs
Providing technical support for our student platform
Protecting the security and integrity of our systems

3. No Sale or Marketing Use of Student Contact Information

We do not sell, rent, lease, or otherwise provide student telephone numbers, mobile phone numbers, email addresses, or other student contact information to third parties for their own marketing, advertising, lead generation, or sales purposes.

We do not use student contact information to conduct unrelated marketing campaigns.

We do not sell or exchange student contact information for leads, affiliate marketing, or other commercial marketing purposes.

Our communications with students are limited to information reasonably related to their enrollment, courses, student accounts, course logistics, and urgent or emergency matters associated with delivering a course.

4. SMS Text Messaging

Student SMS Notifications

We may use SMS text messaging to communicate with students who have student accounts associated with our courses.

We only take registrations over the phone and when asked for a preferred phone number you were asked: “Would you like to receive course-related text messages at this mobile number?” This is to initiate automated communications. Once logged into the TechNow Quiz Platform there is a button at the top of your dashboard “SMS: on“, with a mouse hover text tooltip of “You are currently enrolled to receive SMS notifications about your student account and courses. PRESS TO DISABLE SMS”. If you press the button it becomes “SMS: off“, with a mouse hover text tooltip of “You are currently NOT enrolled to receive SMS notifications about your student account and courses. PRESS TO ENABLE SMS”. Changes of “SMS: off” and “SMS:on” are logged as text messaging Opt-Out and Opt-in.

SMS messages are used for course-related and administrative communications, not marketing or promotional campaigns. Most TechNow communications is through email, SMS is used for time critical and emergency communications.

Examples of SMS communications may include:

Student account notifications
Course enrollment or welcome notifications
Course reminders
Class schedule information
Schedule changes
Class cancellations
Location or logistical information
Instructor or course-related administrative notifications
Urgent or emergency information related to the delivery of a course
Other communications reasonably necessary to administer a student’s participation in a course

We do not use student SMS messaging to send advertising, promotional offers, sales messages, or unrelated marketing communications.

SMS Consent

Students who elect to receive SMS messages authorize TechNow, Inc. to send course-related and administrative text messages to the mobile telephone number provided by the student.

SMS consent is not a condition of purchasing or enrolling in a course.

Message frequency varies depending on course enrollment, account activity, and circumstances requiring course-related communication. Message and data rates may apply.

Opting Out of SMS Messages

Students may disable SMS notifications through the SMS settings available within their student dashboard.

Students may also reply STOP to an SMS message to request that SMS messaging be discontinued.

After an SMS opt-out request is received, our platforms prevent additional SMS messages from being sent to that telephone number.

A student may request assistance regarding SMS messaging by replying HELP where supported or by contacting us using the contact information provided on our website.

Disabling SMS notifications does not prevent a student from accessing their student account or participating in a course. Students who disable SMS may still receive important information through other available communication methods when necessary.

SMS Information Is Not Sold or Shared for Marketing

We do not sell, rent, or share mobile telephone numbers or SMS consent information with third parties for their own marketing or advertising purposes.

SMS consent information is used solely for administering our student communication program and providing the course-related communications described in this Privacy Policy.

5. TechNow Does NOT Share Information With Service Providers

Unlike most companies, TechNow does not use third-party service providers to operate our business, we are a SELF HOSTED company.

For example, we internally self host:

Website
Student-platform
Email
Information technology and security
Database and infrastructure services

TechNow interacts with a Bank for Payment Processing and with a trusted SMS provider for SMS delivery. A student’s mobile telephone number and message information may be transmitted through our trusted SMS service provider solely to deliver the requested or authorized course-related communication.

6. Course Platform Information

Students may receive an account on our course and quiz platform.

Information associated with a student account may include:

Login credentials
Course enrollment
Quiz and assessment activity
Course progress
Account settings
Communication preferences
SMS preferences

This information is used to provide and administer the student’s courses and account.

7. Payment Information

When payment is required for a course, payment information may be processed through a third-party payment processor.

We do not retain payment-card information on our student quiz platform unless specifically stated otherwise.

Payment processors may collect and process payment information according to their own privacy policies and security practices.

8. Cookies and Technical Information

Our website and student platform may use cookies, session information, logs, and similar technical mechanisms necessary to:

Maintain authenticated sessions
Keep students logged into their accounts
Provide website and application functionality
Maintain security
Detect and prevent unauthorized access
Diagnose technical problems
Improve the reliability of our services

We do not use student contact information for third-party advertising or behavioral marketing.

9. Information Security

We take reasonable administrative, technical, and organizational measures to protect student information against unauthorized access, alteration, disclosure, or destruction.

No method of storing or transmitting information over the Internet can be guaranteed to be completely secure. We therefore cannot guarantee absolute security of information.

10. Retention of Information

We retain student information for as long as reasonably necessary to provide our services, administer courses and student accounts, maintain appropriate business records, comply with legal or regulatory obligations, resolve disputes, and protect our rights and systems.

When information is no longer reasonably necessary for these purposes, we may securely delete or otherwise dispose of it.

11. Children’s Privacy

Our courses and services are intended for the individuals described by our course enrollment requirements. We do not knowingly collect personal information from children in violation of applicable law.

If you believe that a child has provided personal information to us without appropriate authorization, please contact us.

12. Third-Party Websites

Our website may contain links to websites or services operated by third parties.

We are not responsible for the privacy practices, content, or security of third-party websites. We encourage users to review the privacy policies of those websites before providing personal information.

13. Changes to This Privacy Policy

We may update this Privacy Policy from time to time to reflect changes in our services, technology, business practices, or legal requirements.

When we make changes, we will update the Effective Date shown at the beginning of this Privacy Policy.

14. Contact Us

If you have questions about this Privacy Policy, your personal information, or our SMS messaging practices, please contact us:

TechNow Inc.
14117 Jones Maltsberger Rd
San Antonio, TX 53578
210 733-1093
technow-training@technow.com
technow.com

Effective Date: August 1, 2026