Networks

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This document outlines key network protocols including ARP, SYN, FTP, ICMP, DNS, port scans, SYN floods, and the application layer. It discusses how these protocols work from the bit level up through data encapsulation using Ethernet, IP, and TCP. Specific topics covered include the three-way handshake, how ARP maps IP addresses to MAC addresses, SYN scans, the FTP protocol, ICMP, DNS name resolution, types of port scans, and SYN floods as a denial of service attack.

Education

Network
Forensics and
Protocols
“From bits to information”

Outline
• The Core Protocols.
• ARP.
• SYN.
• FTP.
• ICMP.
• DNS.
• Port Scans.
• SYN Floods.
• Application Layer.

The Core
Protocols
“From bits to information”

Application Layer
“From bits to information”

This document discusses measuring carbon dioxide (CO2) levels indoors. It provides information on why and how to measure CO2, including details on hardware and software implementations and results. Standards for indoor air quality based on CO2 parts per million (ppm) are referenced. Costs of various CO2 sensors are listed. Code examples are provided for reading sensor data from a serial port and writing to output streams. Next steps discussed include adding geo-location and improving the monitoring website and software.

Simplified Call Flow Signaling: Handovers

3G4G

The document discusses different types of handovers in wireless networks, including hard handovers, soft handovers, and inter-RAT (radio access technology) handovers. It explains that hard handovers involve breaking the connection in the old network or cell before making it in the new one, while soft handovers make the connection in the new network or cell first via techniques like softer handover between cells of the same NodeB or soft handover between different NodeBs. The document also notes that inter-frequency and inter-RAT handovers are always hard since they require changing the wireless technology. Diagrams and call flows are provided to illustrate the handover signaling processes.

How to Configure NetFlow v5 & v9 on Cisco Routers

SolarWinds

This document provides instructions for configuring NetFlow versions 5 and 9 on Cisco routers to monitor network traffic. It explains that NetFlow collects IP traffic data, what versions 5 and 9 are, and how to configure each version on a router by specifying the collector server, export port, and interfaces. It also describes how to verify the NetFlow export and how tools like SolarWinds NetFlow Traffic Analyzer analyze exported data to provide network usage insights.

3GPP SON Series: An Introduction to Self-Organizing Networks (SON)

3G4G

Self-organizing networks (SON) aim to simplify and speed up network deployment, optimize networks more easily, and make maintenance and issue identification more efficient. SON reduces costs and improves quality of experience for users. SON has three stages: self-configuration for faster rollout, self-optimization for ongoing performance improvements, and self-healing for autonomous failure mitigation and maintenance.

Network Security and Visibility through NetFlow

Lancope, Inc.

With the rise of disruptive forces such as cloud computing and mobile technology, the enterprise network has become larger and more complex than ever before. Meanwhile, sophisticated cyber-attackers are taking advantage of the expanded attack surface to gain access to internal networks and steal sensitive data. Perimeter security is no longer enough to keep threat actors out, and organizations need to be able to detect and mitigate threats operating inside the network. NetFlow, a context-rich and common source of network traffic metadata, can be utilized for heightened visibility to identify attackers and accelerate incident response. Join Richard Laval to discuss the security applications of NetFlow using StealthWatch. This session will cover: - An overview of NetFlow, what it is, how it works, and how it benefits security - Design, deployment, and operational best practices for NetFlow security monitoring - How to best utilize NetFlow and identity services for security telemetry - How to investigate and identify threats using statistical analysis of NetFlow telemetry

NetFlow Best Practices - Tips and Tricks to Get the Most Out of Your Network ...

SolarWinds

Network bandwidth usage is one of the biggest contributors to your network performance. By taking advantage of the flow technology that is built into most routers and switches, you can quickly identify bottlenecks and troubleshoot bandwidth related problems. Join our SolarWinds Head Geek, Don Jacob and Sales Engineer David Byrd as they discuss and share the tips and tricks to get the most out of your network bandwidth.

Firewall

ilashanawaz

This document discusses different types of firewalls. It begins by defining a firewall as hardware or software used to help secure a network. It then describes four main types of firewalls: packet filtering, application proxy, stateful inspection, and circuit-level proxy. Packet filtering firewalls apply rules to each IP packet to forward or discard it based on information like source/destination addresses and ports. Application proxy firewalls act as a relay for application-level traffic and can log/audit at this level, providing more security than packet filtering but with more overhead. The document provides brief descriptions and advantages/disadvantages of packet filtering and application proxy firewalls.

Data Acquisition

Sajjad Ali

This document summarizes a data acquisition (DAQ) system used for collecting real-time oil and gas well data. The DAQ system consists of hardware components like base radio loggers and wireless sensors, as well as configuration and display software. Common sensors described are for pressure, temperature, and flow measurement, and provide high accuracy over long battery life. The document outlines the setup and use of the configuration software to identify sensors, assign addresses, and acquire real-time data for calculating production rates and reporting.

Community tools can help fight DDoS attacks in three ways: 1. Bogon filtering blocks traffic from bogon address space not assigned to any network. Networks share bogon lists and filter incoming routes. 2. Flow Sonar provides visual network traffic analysis to detect anomalies indicating attacks. It incorporates DDoS alert feeds to identify compromised sources. 3. UTRS implements remote triggered blackhole filtering to divert suspected attack traffic to a null route. Cooperating networks distribute and apply attack filters to mitigate large infrastructure attacks.

BKNIX Peering Forum 2017: Community tools to fight DDoS

APNIC

Cisco Connect 2018 Thailand - Innovation towards sp transformation mr.sean wa...

NetworkCollaborators

The document discusses network transformation strategies for telecommunications providers, including automation, virtualization, and architecture changes. It notes the growing demands on networks from trends like digitization, mobile traffic increases, and more IoT devices. This puts pressure on providers' revenues despite network investments. The strategies proposed to address challenges include network automation for improved efficiency, virtualization for agility, and optimized architectures like distributed cloud designs for 5G and IoT. Case studies demonstrate how these approaches reduce costs and time to deploy new services while improving customer experience.

Sigfox Euratech Workshop

Aurelien Lequertier

The document summarizes a Sigfox workshop held at Euratechnologies in April 2018. It provides an overview of Sigfox, its global low power wide area network, and how it can be used for applications like parking management, asset tracking, home alarm systems, and stolen vehicle recovery. It also discusses Sigfox's ultra narrow band technology, random access protocol, and other technical aspects. Finally, it demonstrates how to get started with the Arduino MKRFOX1200 kit for prototyping Sigfox devices and transmitting messages over the network.

NRO Internet Number Resources Status Report

APNIC

Sigfox User Group Launch UK

Aurelien Lequertier

Sigfox provides a global low power wide area network (LPWAN) to connect low-cost IoT devices. It offers ultra-narrow band connectivity using small messages of 0-12 bytes to transmit sensor and device data up to 6 messages per hour with up to 140 messages per day. The network can handle over 1 million messages per base station daily. Sigfox's cloud platform stores and analyzes the data which can then be accessed by customers and partners for various IoT applications like asset tracking, parking management, home security, and more.

Remote asset tracking system in UCIL's Narwapahar Mine in India

PINAKI ROY

This document describes a remote asset tracking system installed 500 feet underground in a uranium mine in India. The system uses Wi-Fi technology to track the location of equipment and personnel in real-time. It also enables voice communication between workers using IP phones. Additionally, an RFID system counts the number of ore trips made by each mine truck and timestamps when they dump loads at the grizzly. The tracking data and voice communication help manage emergencies faster and minimize equipment downtimes for improved safety and productivity.

Intrusion Detection Systems

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Networks