Network security open source

Router and WiFi troubleshooting

In today's world, where we depend on the internet for almost everything, a problem in our router or WiFi can be frustrating. It can slow down our work, hinder our entertainment or cause miscommunication in our household. However, router and WiFi troubleshooting can be done on our own without the need for a technician, provided we know what to look for.


Router Troubleshooting:



  • Ensure that the router is turned on and plugged in properly to the power outlet.

  • Check for any loose or disconnected cables between the modem and the router.

  • Update the firmware of the router to get the latest feature updates and bug fixes.

  • Reset the router to its default settings if the issue still persists.


WiFi Troubleshooting:



  • Check if other devices are connected to the WiFi and if they are experiencing the same issue.

  • Verify if the WiFi is turned on and if the SSID and password are entered correctly on the device.

  • Move the device closer to the WiFi router to see if connectivity improves.

  • Reduce interference due to other electronic devices or household objects by changing the channel on the router.


One can also try turning the router and modem off for a few minutes and restarting them, which sometimes helps in solving minor issues. If the issue persists, we can always contact the customer service representative for further assistance or consider purchasing a new router or modem.


Router and WiFi troubleshooting may seem intimidating, but maintaining a smooth internet connection is essential for uninterrupted work, entertainment, and communication. A few quick fixes can save us from unnecessary headaches and improve our overall internet experience.


LAN IP Address Explained: Basics and Usage


A LAN IP address is a unique address assigned to each device connected to a local area network (LAN). It is used by devices on the same network to communicate and share data with one another. The LAN IP address serves as a unique identifier that enables devices to send and receive data with each other.


The LAN IP address is distinct from the public IP address, which is assigned by an internet service provider (ISP) to the router that connects to the internet. The public IP address is visible to other devices outside the LAN, while the LAN IP is only visible to devices within the network.


LAN IP addresses use the Internet Protocol (IP) addressing system. The two most common IP address systems are IPv4 and IPv6. IPv4 addresses consist of four sets of numbers separated by periods (e.g., 192.168.1.100) and are limited in number. IPv6 addresses, on the other hand, are longer and alphanumeric, and allow for more devices to be connected to the network.


Each device on a LAN is assigned a unique IP address, which can be static or dynamic. Static IP addresses are manually assigned to the device and remain unchanged unless manually modified. Dynamic IP addresses, on the other hand, are automatically assigned by a server using Dynamic Host Configuration Protocol (DHCP) and are subject to change based on network availability.


Understanding the LAN IP address is essential for configuring and troubleshooting the home network. It enables access to the device's settings, such as port forwarding, network sharing, and security measures. Additionally, understanding the LAN IP address helps identify and resolve network connectivity issues.


Wireless transmission overview

Wireless transmission is a type of communication technique that enables data to be transmitted from one device to another without the use of physical cables or wires. This means that you can transfer data, stream music or videos, and even browse the internet wirelessly without any restrictions. Wireless transmission has revolutionized the way we communicate and has made our lives significantly more convenient.
Wireless transmission operates via radio frequencies, which means that all wireless devices have a built-in radio transmitter and a receiver. These receivers are designed to receive radio signals at specific frequencies, depending on the type of communication taking place, and convert them into a usable format. The transmitter, on the other hand, is responsible for sending the data.
The most common wireless transmission technologies used today are Wi-Fi, Bluetooth, and NFC. Wi-Fi is used to connect to the internet and can be found in almost every home, workplace, and public space. It works by sending data through radio waves, allowing you to access the internet anywhere within range of a Wi-Fi hotspot. Bluetooth is used for short-range communication between devices, such as connecting wireless headphones to your phone. NFC is used for contactless payments and can be found in most credit and debit cards.
Wireless transmission has become an indispensable part of our daily lives, and its applications are endless. It has given rise to many new technologies, including smart homes and the Internet of Things (IoT). With wireless transmission, we are no longer bound by the limitations of cables and wires, and our devices can communicate with each other seamlessly. So, the next time you connect to a Wi-Fi hotspot or pair your Bluetooth headphones with your phone, remember the technology behind it and the convenience it brings.
Wireless transmission overview

Network virtualization hypervisor


If you've ever dealt with computer networking, you likely have heard of hypervisors. But have you ever heard of a network virtualization hypervisor? In this article, we'll take a closer look at what a network virtualization hypervisor is and why it's an essential technology for modern networking.
A network virtualization hypervisor is a software layer that enables different virtual networks to work on the same physical infrastructure. Essentially, it's a layer that sits between the physical network and the network virtualization layer, managing and allocating resources as needed. It's a crucial component of network virtualization because of its ability to abstract the physical infrastructure and provide a virtualized network environment where multiple virtual networks can operate in complete isolation.
One of the main benefits of a network virtualization hypervisor is its ability to create different network topologies and configurations without the need for physical hardware. It allows virtual networks to be set up quickly and easily, with the ability to create complex networks that mimic real-life scenarios. This makes it an essential tool for researchers, developers, and network engineers who want to test and experiment with different network configurations.
Another significant benefit of network virtualization hypervisors is its ability to optimize resource usage by efficiently allocating bandwidth, storage, and processing power. This is especially important in large organizations with multiple departments or tenants, as it enables them to work independently while sharing the same infrastructure.
In conclusion, a network virtualization hypervisor is an essential technology for modern networking. It allows virtual networks to be set up quickly and easily, provides complete isolation between different virtual networks, and optimizes resource usage. Whether you're a researcher, developer, or network engineer, a network virtualization hypervisor is an essential tool to have in your arsenal.

Network security consultant

If you are concerned about the security of your network, a network security consultant is the professional you need. Network security consultants help businesses protect their digital assets from cyberattacks by implementing security measures and conducting vulnerability assessments to identify possible breaches.


The role of a network security consultant can vary depending on the scope of the project. Some consultants may be hired for a short-term project, while others may work on a long-term basis to maintain the security of the network over time.


One of the main tasks of a network security consultant is to assess the current security measures in place and identify potential weaknesses or areas for improvement. This can include reviewing firewalls, antivirus software, and access control policies. They can help identify gaps in coverage and develop a strategy to address these issues.


Another important responsibility of a network security consultant is to stay up-to-date with the latest security threats and trends. Cybersecurity is an ever-evolving field, and staying ahead of the latest security threats is crucial for protecting your network.


By hiring a network security consultant, you can ensure that your business is protected from cyberattacks and potential data breaches. Whether you need assistance with a one-time project or ongoing security maintenance, a network security consultant can provide the expertise and support you need to keep your network secure.

Network security consultant

Network virtualization

Network Virtualization


Network virtualization is a technology that allows multiple virtualized network architectures to coexist on the same physical network. It is an essential component of cloud computing infrastructure and enables a flexible, agile, and scalable network infrastructure that can support the business needs of modern enterprises.


Network virtualization separates the network's physical infrastructure from the logical network, enabling multiple virtual networks to run on the same physical infrastructure. This separation allows greater flexibility in designing and managing the network and enables administrators to create and customize virtual networks to meet the specific needs of each application or service.


Network virtualization provides several benefits, including reduced hardware costs, improved security, increased network agility, and simplified management. It allows companies to reduce the amount of physical hardware required to operate their networks, enabling them to save money on hardware costs and reduce operational expenses.


Network virtualization also improves security by providing isolation between virtual networks. This isolation prevents malware from spreading between virtual networks, reducing the risk of security breaches and data loss.


Furthermore, network virtualization enables administrators to quickly and easily create, configure, and deploy virtual networks, improving the network's agility and scalability. It simplifies network management, making it easier to monitor and troubleshoot virtual networks.


In conclusion, network virtualization is a critical component of modern network infrastructure. It provides the flexibility, agility, scalability, and security required to meet the needs of cloud computing and other modern applications.

Ethernet over powerline

Ethernet over powerline (EoP) is a technology that enables users to connect various devices to each other and to the internet through ordinary electrical outlets. It is a flexible and convenient method of networking that avoids the need for additional wiring, avoiding the cost and complexity of running new network cables.


The concept behind EoP is simple- it uses existing electrical wiring in a building to transmit data between devices. Special adapters, which are plugged into the electrical outlets, act as both the receiver and transmitter of signals. By plugging in the Ethernet cable from the device to the adapter, data can be transferred over the electrical wiring instantly.


EoP technology can become an essential asset for homes and small businesses that need networking capabilities, but do not want the complex process of installing new wiring or steering through of Wi-Fi dead zones. The EoP provides a network with more exceptional speed than Wi-Fi networks, and the connection is relatively stable. Another aspect of Ethernet over powerline networking is that it is resistant to being interrupted by physical obstructions, such as walls, since the data is transmitted via wired electrical lines.


The technology is now so prevalent that it has become a significant aspect of home automation systems. The powerline network serves as a backbone to interconnect the various home automation and IoT devices. This interconnectivity ensures that devices with different communication protocols can communicate with each other.


Additionally, EoP can serve as a backup or alternative to wireless networking systems. Should something happen to your primary network, the EoP network would still be available to keep your devices online. This backup network can be priceless in cases of emergencies.



  1. Ethernet over powerline technology provides a network with exceptional speed.

  2. The connection is stable and resistant to physical obstructions, making it more efficeint than Wi-Fi networks

  3. EoP serves as a backbone for home automation and IoT devices and facilitates communication between devices functioning on different protocols.

  4. EoP is a solid backup to wireless networks to maintain internet connectivity in emergencies.