What Is Cable Internet?
A computer network connected using coaxial cables, twisted pairs, and fiber optics. Coaxial cable network is a common way of networking. It is more economical, more convenient to install, average transmission rate and anti-interference ability, and shorter transmission distance. Twisted pair network is currently the most common way of networking.
- Chinese name
- Wired network
- Foreign name
- Wired network
- Adopt
- Coaxial cable
- Nature
- Networking
- Features
- Long distance information transmission
- A computer network connected using coaxial cables, twisted pairs, and fiber optics. Coaxial cable network is a common way of networking. It is more economical, more convenient to install, average transmission rate and anti-interference ability, and shorter transmission distance. Twisted pair network is currently the most common way of networking.
Introduction to wired networks
- It is cheap and easy to install, but it is susceptible to interference, the transmission rate is low, and the transmission distance is shorter than the coaxial cable. Optical fiber, short for optical fiber, is a light transmission tool that uses the principle of total reflection of light in fibers made of glass or plastic. The tiny optical fiber is encapsulated in a plastic sheath, which allows it to bend without breaking. Generally, a transmitting device at one end of an optical fiber uses a light emitting diode (LED) or a laser beam to transmit light pulses to the optical fiber, and a receiving device at the other end of the optical fiber uses a photosensitive element to detect the pulse. In daily life, since the conduction loss of light in optical fiber is much lower than the loss of electricity in electric wire, optical fiber is used for long distance information transmission.
- Wireless network: mainly uses air as the transmission medium and relies on electromagnetic waves and infrared rays as carriers to transmit data. Although the networking is convenient and flexible, it is not very popular due to the high cost of wireless networking.
Wired network wired network security
- 1. Perform audit and mapping
- The infrastructure of the entire network, such as vendor / model, location, and basic configuration of firewalls, routers, switches, Ethernet cabling and endpoints, and wireless access points should always be clearly understood. You also need to know which servers, computers, printers, and any other devices are connected to the network, when they are connected, and their connection paths throughout the network.
- During the audit and mapping process, you may find specific security holes and ways to improve security, performance, and reliability. You may also find improperly configured firewalls or physical security threats.
- 2. Keep the network updated
- After completing a basic network audit and mapping, you should check for firmware or software updates for all network infrastructure components. Also, make sure that these components are not using default passwords, check for any insecure configurations, and investigate other security features or features you are not using.
- Next, look at all computers and devices connected to the network. Ensure basic security, such as OS and driver updates, personal firewalls are active, antivirus is running, and passwords are set.
- 3. Protect the network physically
- Although physical network security is often overlooked, it is just as important as an Internet-facing firewall. Just as you need to defend against hacking, botnets, and viruses, you need to defend against local threats. [1]