In this article, we will see how to Configure Proxy for Yum Repository. If our servers are accessing the internet via a “Proxy Server“, we can see that even if we can access the internet when we run a command such as “yum install package-name“, we can’t access it. In such a case, the settings that we will talk about in our article should be made.
1. We open the “etc/yum.conf” file on our server and edit it as follows.
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.
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.
Many users use the top command to monitor the processes running on the Linux operating system from the command line and to see the amount of CPU and memory these processes use. In this article, we will learn the htop application, which has a similar task with the top command but provides easier use.
The first striking change in the htop application is that there is a text graph at the top of the screen showing the usage of all cores, memory, and swap space. This part is much more understandable and useful than the top command.