Network

What is NTP?

An abbreviation for “ NTP Network Time Protocol”. NTP is a protocol used to synchronize the clocks of computers on packet-switched networks with variable latency. The protocol is specifically designed to be resistant to the effects of variable delay, thanks to the use of jitter buffers. NTP is one of the oldest Internet protocols still in use. NTP uses the User Datagram Protocol (UDP) over port 123. NTP settings are made from either the  /etc/ntp.conf or /etc/xntp.conf file, depending on which Linux distribution is used.

It is very important for us to leave out the ports and services that we do not use to create our network security with the Mikrotik router. In this article, we first connect to the Mikrotik Firewall Ip and Port Banning method with the winbox application to see how to do it.

From here;
From the Ip / Firewall menu, we go to the Filter Rules tab.

We add a new rule by pressing the + button.

Pfsense is a BSD-based software firewall. The product generally has many useful features such as msn or program banning, web content filtering, user restriction, and VPN. Now let’s look at the answer to the question of what is PfSense.

What is Pfsense?

Pfsense is an open-source firewall/router, FreeBSD software distribution. FreeBSD consists of the open-source codes of the Research Unix of AT&T, which is considered to be the ancestor of UNIX. It has a Web interface for configuration. You can easily install it on any computer or server.

GigaBeam LR with a high gain satellite antenna is a 60 GHz radio designed for low noise and high-efficiency connection in urban environments with high signal intensity in long-range applications. It includes a 5 GHz radio that also provides redundancy for outages. They are indispensable devices for high traffic transmissions for their 2 Km to 12 Km models.

2.4GHz Internal wireless configuration broadcast and UNMS Application
In addition, in difficult installation areas, you can use the 2.4 GHz wireless configuration broadcast, which offers a connection up to 20 meters from the device internally to facilitate your maintenance during or after installation, thanks to this broadcast you can use your device or your device at any point on the local network where your device is included. Or you can use this publication to interfere with your device with the UBNT UNMS quick configuration software, which is offered free of charge on Android and IOS platforms.

Li-Fi (Light Fidelity) is a wireless optical network technology that uses LED lights to wirelessly communicate and transmit data between devices. Li-Fi technology is a light-based communication technology that aims to utilize light waves instead of radio signals to present data. In order to fully understand Li-Fi technology, it is important to understand how Wi-Fi technology provides internet and data to our devices.

Generally, Wi-Fi uses radio frequency to transmit data and signals are spread over a specific area by a data point. Li-Fi is the “Visible Light Communication” system. In other words, Li-Fi uses light in bulbs, as we all know, instead of radio frequencies to transmit data. It should be known that Li-Fi technology is much stronger and faster than Wi-Fi technology because it is easier to focus the signals transmitted using light compared to radio frequencies to a single area.