Routing – Page 3 – POFTUT

Category: Routing

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What is CCNA or Cisco Certified Network Associate?

Cisco is very popular vendor in the IT network field. Cisco provides a lot of different type of solutions from access switch to SDN firewall. Cisco is penetrated to the network device market over the years. This will made a lot of network guys play with Cisco devices. Cisco create CCNX series certification over years. Here X may mean Associate, Professional. There is also CCIE certification which is one of...

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What Is TCP/IP Model?

Internet started long days ago. But in the first years it was not popular as today. From technical perspective there are some difficulties which prevents the expansion of the internet. There was a lot of protocols those are incompatible each other and the TCP and IP protocols are standardized. TCP/IP Model fits very well with OSI Reference Model. OSI Model has been very influential the design of the TCP/IP Model....

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Linux Network Administration with ping and ip Commands

Linux network stack is very powerful. Network stack provides a lot of functionalities where most of the enterprise network products can not offer. Here we will look basic and everyday network administration commands. Check Network and Internet Connectivity Network connectivity can be checked easily with ping and telnet tools. One method to check internet connectivity is ping to Google.

ping sends icmp packets google.com is the destination of the icmp packets line...

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DHCP Reservation For Windows Server 2012, Windows Server 2008 and Benefits

DHCP is a protocol used to provide network related configuration to the network hosts. Mainly IP address information, network gateway, network mask and DNS server information are provided by DHCP protocol. DHCP have more features like providing boot file over network etc. In this tutorial we will look how DHCP reservation works for Windows Server 2012, Windows Server 2008, Cisco and benefits of using dhcp reservation. More information about DHCP...

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Router vs Modem What Is Different and What Is The Same?

In IT generally  well known names are used to identify devices. This may create some time problems about the issues. One of the most asked question in the network world and at the client side “What is the difference between Modem and Router?”. In this post we will look technical and functional details and compare router and modem. What is Router The router is generally used for devices that have...

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Popular Free DNS Services Around The World

DNS is important protocol for internet. Without DNS protocol we can not use internet effectively. DNS resolves domain and host names into IP addressees where computers and network devices can understand and operate. In recent years  DNS is used to block access to the some web sites and domain names. But internet is a free world which can provide solutions about this censorship. In this tutorial we will list publicly...

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Linux ping Command Tutorial With Examples

Ping is one of the most used tool for network diagnostics. When internet is not working, can not access file shares etc we will firstly ping command. Ping is one of the most known tool in the IT area. Ping actually uses ICMP packets to get information about network status. In this tutorial we will look practical use cases of Ping tool. Syntax Syntax of ping command for Linux is...

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Linux Traceroute Command Tutorial With Examples

The network is an important part of the system administration. Because without a network the server has nothing to do. While administrating Linux servers troubleshooting network is very important. When a network problem occurs in a Linux server first step is checking network services and the route information. Network services can be checked with systemctl or similar commands. Network routes can be checked with different tools but the most popular and...

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Linux Dig Command Tutorial With Examples

Dig stands for Domain Information Groper. Dig is used to interrogate DNS servers. It have a lot of features to interact and use DNS servers. In this tutorial we will look popular and useful dig command usages. Most of the system and network administrators uses dig to debug DNS related issues. Help Help information about dig command can be listed with the -h option.

Man Detailed help information can...

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Linux Netstat Command With Examples

Linux provides a lot of tools for network management and visibility. netstat is another popular and useful tool used by a lot of system and network administrators. In this tutorial we will look usage examples of netstat. Syntax We will use following syntax for the netstat command.

List All Connections A typical Linux system will have a lot of different connections. These connection types can be Unix Sockets, IPX Sockets,...

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