Category: CCNA

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How to Find Detailed Domain Information with whois Command?

whois  very popular and useful tool used to list and find domain information. We generally know that domain and sub domains are resolved to the IP address and our browser redirects to this IP address. But the actual story is not just this. Domain names have a lot of attributes...

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How To Get Linux Network IP Address In Different Ways ?

We can determine Linux system IP address in different ways. IP address is used to communicate over network and can be get and set in different ways. In this tutorial we will use Ubuntu distribution but given examples and commands will work for all of the different Linux distribution like...

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What Is Linux, Unix Socket?

Socket is a mechanism which provides connection between two process or system by using network stacks. In a more clear way we can use sockets communicate and transfer data between two system. As we know Unix and Linux systems works on file logic. Everything in operating system is file where network...

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What is Address Resolution Protocol (ARP) and How It Works?

Address Resolution Protocol (ARP) is auxiliary protocol used by Internet Protocol (IP). ARP is defined with RFC826 and gained main stream over computer networks. ARP is used to resolve IP address with MAC or hardware address of the network interface. As we know MAC address is used to identify nodes...

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Linux ethtool Tutorial with Usage Examples

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...

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TTL Expired In Transit Error and Solution

TTL is the short code for Time To Live. TTL is located in IP packets where it is used to hold the count of intermediate hops. TTL is value is set by source host. Windows operating system set it to 64 where Linux operating systems set to 128. Every router...

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How To Install and Use Linux Minicom Command Tutorial with Examples?

minicom  is little command line based tool used to connect serial lines. In a more pragmatic definition minicom can be used to connect modems, routers and switch console ports via serial port. Minicom is very similar features and user interface to the TELIX. Install For Debian, Ubuntu, Kali, Mint We...

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How To Monitor Network Traffic and Statistics with ntop Tool?

ntop is network traffic and statistic monitoring tool. ntopprovides similar philosophy to top command. There is also web based gui which makes it elegant to use. ntop packages are provided by popular distributions like Ubuntu, Debian, Mint, Fedora, CentOs, RHEL etc. Install ntop For Debian, Ubuntu, Kali, Mint We can...

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