Linux, Windows, Security, Programming, Network Tutorials
Router is a popular device that is used to connect different networks together. From an end-user point of view, a router is a device that is used to connect the internet. ADSL Modems ,Dialup Modems ,MetroEthernet Switch , 4G and 5G Modems also referred to as Router because of their routing function and the popularity … Read more
nslookup is a tool used to resolve DNS name into IP address or IP address to DNS name. nslookup provides a lot of different features during DNS resolution. nslookup command features also provided from different web sites and web applications. In this tutorial, we will talk about these different web sites and their features. centralops.net … Read more
Advanced Research Projects Agency (ARPA) is an agency based U.S. The ARPANET is a network created and developed by this agency. Perhaps ARPANET is the most popular military project known by millions. Creation Of ARPANET The main idea of the creation of the ARPANET is to communicate and share computer resources among scientific users between … Read more
Internet Protocol or IP is designed to create a worldwide network to connect every computer to each other. OSI reference model creates a model where different protocols and networks can be defined and IP is used for the Network layer. There are two main versions of the IP protocol named IPv4 and IPv6. We will … Read more
Network Address Translation a.k.a. NAT is a process or technique used to change IP address and TCP port numbers by an intermediate device like firewall, router, modem, etc. There are different use cases for NAT but the most popular one is to use a single WAN IP address for multiple servers and clients which is … Read more
Windows IP address configuration can be gathered with different ways. In this tutorial we will learn command line tool ipconfig and GUI to learn IP address of the operating system. Command Line with ipconfig Command ipconfig is a tool which provides detailed information about the system network configuration. This will list information like Physical Address , IPv4 Address , … Read more
Internet and most of the network infrastructures uses IP Protocol. IP protocol uses IP addresses in order to connect different hosts and networks over globe. Classless Inter Domain Routing or CIDR is hierarchical IP addressing scheme used to set IP addresses to the hosts and network. Here we will learn how to calculate IP address, … Read more
ethtool is useful utility used for Network Interface Card configuration. It provides simple and fast way to get and set configuration about IP address, interface speed, interface duplex or half duplex etc. List and Printer Interface Properties We will start with simply listing given network interface properties. We will see that there is a lot … Read more
Tcpdump is everyday tool used by system and network administrator. We generally look simple use cases like host, port and protocol filter for tcpdump . In this tutorial we will look how to filter host, port and protocol in tcpdump. But keep in mind that tcpdump will requires administrator or root privileges. We can use root account … Read more
In computer networks we need to give each host or system a unique number and/or name. This is the only way to make communication possible. In other ways there will be a lot of problems like collusion or miss interpretation. Most of the system uses IP addresses to communication over computer or IT networks. In … Read more