Advanced Network Troubleshooting with Wireshark Training Course

Transport of baseband audio and video streams across IP networks using multicast signalling protocols is becoming increasingly used in broadcast networks.

This 3 day course/workshop covers the theory and practice of implementing these protocols within IP and Ethernet networks. The practical element of the course will use Cisco L3 switches and the multicast streamers and receivers will use the cross -platform VLC application. It is not necessary to have any expertise in the Cisco command line as the configuration of the devices can be instructor-led if required. However the course is intended to have at least 50% practical content and can be customised or even lengthened (to examine the protocols in more detail) if run as a single company event.

The purpose of the course is to provide the participant with basic knowledge of the Wireshark protocol analyzer. The course focuses on deep understanding of the tool, as the basics for using it for network troubleshooting. The course starts with packet capturing, capture and display filters, statistical features and the basics of the expert system. By the end of the course the participant will be able to perform basic troubleshooting in small to medium size networks. The course is based on theory, class exercise and labs.

This course is a continuation of the "Basic Network Troubleshooting Using Wireshark" course, and comes to provide the participants with advanced capabilities for network troubleshooting. The course provides an in-depth knowledge of network behaviour and problems, along with the capabilities to isolate and solve security and advanced applications problems. The course is based on theory, class exercise and labs.

Wireshark is a free open source packet analyzer used for troubleshooting network issues. Network packet analysis is a technique used to view, in real time, the raw data sent and received over a network interface. This is useful for troubleshooting network configuration and network application problems.

In this instructor-led, live training (onsite or remote), participants will learn advanced techniques for troubleshooting the functionality and performance of a network and its applications. This course is an extension of "Network Troubleshooting with Wireshark", which focuses primarily on common HTTP applications. In this training, we consider protocols and connection mediums such as Wi-Fi, HTTPS, SMTP, enterprise applications and more.

By the end of this training, participants will be able to:

• Isolate and solve network security issues using the Wireshark CLI
• Troubleshoot applications that use protocols beyond HTTP, including HTTPS, FTP, mail, DNS, etc.
• Troubleshoot network connection problems in enterprise applications such as databases, RPC, etc.
• Troubleshoot connection problems in media applications such as VoIP and streaming
• Use network forensics to trace and detect security issues

Audience

• Network engineers
• Network and computer technicians

Format of the Course

• Part lecture, part discussion, exercises and heavy hands-on practice

Network packet analysis is a technique used to view, in real time, the raw data sent and received over a network interface. This is useful for troubleshooting network configuration and network application problems. Wireshark is a free open source packet analyzer used for troubleshooting such network issues.

In this instructor-led, live training, participants will learn how to use Wireshark to troubleshoot the functionality of a network as well as the performance of differente networked applications. Participants will learn network troubleshooting principles and practice techniques for capturing and analyzing TCP/IP request and response traffic between different clients and the servers.

By the end of this training, participants will be able to:

• Analyze network functionality and performance in various environments under different conditions
• Determine whether instances of different server applications are performing acceptably
• Identify the primary sources of network performance problems
• Identify and troubleshoot the most common causes of performance problems in TCP/IP communications

Audience

• Network engineers
• Network and computer technicians

Format of the Course

• Part lecture, part discussion, exercises and heavy hands-on practice

Note

• To request a customized training for this course, please contact us to arrange.

This 4 day course involves a mixture of expository based (utilising protocol analyser traces where appropriate) and practical experiments to test and verify the operation of TCP/IP networks. The major aspects of the TCP/IP protocol stack are covered, including subnetting, supernetting and running dynamic routing protocols. TCP and UDP will be compared and contrasted, covering the end-to-end reliability and congestion avoidance capabilities of the TCP/IP stack. Some application layer protocols (HTTP, TLS, DNS, DHCP etc) will be investigated during the course. Network security in the form of TLS will be covered both from a theoretical and practical standpoint. The practical exercises are designed to augment the theory and enhance both the understanding of the underlying protocols and also the problem solving abilities of the delegates.

Audience:

Suitable for anyone looking for an understanding of TCP/IP.

Course is approximately 50% practical.

A 2 day theoretical course (with some practical demonstrations) covering the fundamentals of Internet Protocol v6 – including addressing, protocol formats, ICMP v6, discovery processes and IP v6 routing.

Audience:

Network Planners, Designers, and Engineers requiring an understanding of IP v6. Those requiring a comprehensive overview of IP v6 and the migration process from an IP v4 environment.

This 2 day course investigates the theory and technology associated with IPSec VPN’s.VPN’s are setup using Cisco IOS Routers and ASA Firewalls using the web interface. The workings of the protocols are examined using debug commands and protocol analyser traces of relevant negotiations.

Audience:

Suitable for network planners, engineers or anyone interested in IPSec VPNs

Course is approximately 40% practical

A 5 day practical networking course designed to familiarise students with Cisco IOS (version 12). The course details the key commands used to configure and secure Cisco routers and switches, and covers the CCNA syllabus - including wired and wireless LAN access.

Students will inter-connect networks by implementing static routes, distance-vector and link-state based dynamic routing protocols.

The devices will be configured to route traffic across LAN/VLAN//WAN boundaries, by encapsulating datagrams across serial data links using various WAN protocols, such as HDLC, Frame Relay, ISDN and PPP (with CHAP authentication). VLAN encapsulation/tagging will be via IEEE802.1Q/P.

Standard and Extended Access Control Lists will be configured and applied to router interfaces to filter traffic based on IP address and/or traffic type.

Students will configure static and dynamic NAT to route between private and public networks and cover the theory of Virtual Private Networks (VPN's)

Students will copy router configurations and IOS images to/from a TFTP Server. Privileged commands will be used to debug TCP/IP protocols to ensure proper operation of the routers. Students will also perform password recovery operations.

The course is primarily aimed at IP v4 but does give an overview of IP v6 addressing and covers migration from an IP v4 to an IP v6 network. Other protocols and technologies (VPN's / Wireless) may be demonstrated if time permits.

Course can be customised to precise requirements of customer.

Audience:

This course is suitable for anyone looking for a basic understanding of internetworking with Cisco devices and covers the CCNA syllabus.

Course is approximately 50% practical

A 4 day instructor-led practical course designed to familiarise delegates with the Cisco ASA Firewall CLI and ASDM. The course details the key commands used to configure and secure networks using the ASA Firewall with v8 of the operating system and version 6 of the ASDM.

Delegates will configure the ASA using the console port, TFTP server, telnet and SSH using local and RADIUS authentication. The device will be configured to utilise Syslog and SNMP.

ASA Firewalls will also be configured to use Access-Lists, Network Address Translation and VPN's utilising IPSec protocols. The course will cover the theory of Public/Private Keys, shared secret keys and their use in forming Site to site VPN's between ASA Firewalls using IKE and IPSec. Students will configure the units to create site to site VPN's, remote access VPN's using the Cisco Secure VPN Client and Web VPN's. The course will cover the theory of failover and delegates will configure Active/Standby failover on the ASA.

Privileged commands and protocol analyser traces will be used, where necessary, to debug protocols and ensure proper operation of the ASA Firewall. Students will also perform password recovery operations.

This course will involve interfacing the ASA with other network equipment, such as routers and switches, as would be expected in a network environment.

Audience:

Course is suitable for anyone involved in ASA firewall configuration and network security

Course is approximately 50% practical

In this instructor-led, live training in Uruguay, participants will learn the critical features of DNS while carrying out exercises in the setup and configuration of a BIND DNS server on Linux. The course starts with a refresher on key networking principles, then digs into hands-on practice with setup and configuration. Steadily, the discussion and practices move towards more complex topics such as security, availability, debugging and troubleshooting.

Shadowsocks is an open-source, secure socks5 proxy.

In this instructor-led, live training, participants will learn how to secure an internet connection through a Shadowsocks proxy.

By the end of this training, participants will be able to:

• Install and configure Shadowsocks on any of a number of supported platforms, including Windows, Linux, Mac, Android, iOS, and OpenWrt.
• Deploy Shadosocks with package manager systems, such as pip, aur, freshports and others.
• Run Shadowsocks on mobile devices and wireless networks.
• Understand how Shadowsocks encrypts messages and ensures integrity and authenticity.
• Optimize a Shadowsocks server

Audience

• Network engineers
• System Administrators
• Computer technicians

Format of the course

• Part lecture, part discussion, exercises and heavy hands-on practice

This 4 day coursework is intended for Telecom management and technology professionals who
have to maintain MetroEthernet services across the globe. The course introduces all the
prevailing standards, Troubleshooting guides, vendor options and evolving technologies in
Metro Ethernet domain.

VoIP (Voice over Internet Protocol) is a technology that makes it possible for users to make voice calls over an Internet connection instead of through a regular phone line.

In this instructor-led, live training, participants will learn how to set up a VoIP system using Cisco CallManager Express.

By the end of this training, participants will be able to:

• Understand fundamental VoIP concepts
• Learn how to use VoIP equipment
• Configure CISCO routers for VoIP
• Implement VoIP and CallManager Express into their network
• Configure CME features for SIP, SCCP, and soft phones
• Work with advanced configuration settings and features of CME

Audience

• Managers
• System administrators
• Software and support system developers
• Technicians
• Network engineers

Format of the course

• Part lecture, part discussion, exercises and heavy hands-on practice

Tinc VPN is an open source peer-to-peer virtual private network (VPN) daemon that is compatible with most operating systems. Tinc VPN makes use of tunneling and encryption to build a secure private network between hosts.

In this instructor-led, live training, participants will learn the fundamentals of working with Tinc VPN.

By the end of this training, participants will be able to:

• Install, configure, run, test, and troubleshoot Tinc VPN on any operating system
• Deploy a Tinc Mesh VPN
• Use Tinc VPN for Centralized Cloud Interconnection

Audience

• Developers
• Network engineers

Format of the course

• Part lecture, part discussion, exercises and heavy hands-on practice

Note

• To request a customized training for this course, please contact us to arrange.