CCNP – Page 2 – POFTUT

Category: CCNP

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What Is MD5 Hash Checksum? How To Create and Validate MD5?

MD5 is a checksum or hash calculation method for files. MD5 checksum consists of 128-bit value which is generally expressed as the hexadecimal format with which consist of 32 characters. MD5 Attributes MD5 is a cryptography algorithm which provides some attributes which make it useful for different cases like security, operation etc. Here is the list of MD5 attributes. MD5 checksums are 128-bit values MD5 checksums can be expressed in different...

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What Is DNS Server Or Protocol Port Number?

Domain Name System aka DNS is used to match domain names to the IP addresses. DNS is provided over intranet and internet servers with different port numbers. TCP or UDP DNS can use both transmission protocols TCP and UDP. But general usage is over UDP protocol because of its simplicity and speed. TCP Port 53 One of the used DNS port is TCP Port 53. TCP provides stability over DNS...

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How To Use Google Public DNS Servers?

Google is a huge company which provides paid and free services. It mainly operates in IT and internet area. Internet uses DNS in order to solve domain names into IP addresses. Because internet infrastructure works with IP addresses. Google provides free DNS servers which can be used for fast and free domain resolution. In this tutorial we will learn Google DNS features and how to use in Linux, Ubuntu, Debian,...

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What Is My MAC Address Of Network Interface On Windows Or Linux?

MAC Address is used to identify a Network Interface Card uniquely in a layer 2 network. This address is used to transfer files between default gateway and host or computer. In this tutorial we will learn how to find a MAC address from command-line or GUI in operating systems like Windows and Linux. Windows ipconfig Command Line ipconfig command provides a lot of information about the network of the current...

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What is Zenmap and How To Download, Install and Use In Windows, Linux?

Zenmap is an free and open source GUI designed to be used with nmap . Zenmap is multiplatform tool which supports Linux, Ubuntu, Mint, Kali, Fedora, CentOS,.. , Windows, Mac OS X, BSD etc. . nmap is very powerful tool for network scanning and vulnerability discovery but it is completely command line based. Zenmap can be used by novice users to scan network and discover vulnerabilities. Download Windows Windows version can be downloaded...

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Network Classless Inter Domain Routing (CIDR) Cheat Sheet

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, Network Address, Broadcast Address, Network Mask and provide these as cheat sheet. IP address, 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 in a local network. How ARP Works ARP resolution works very simple way. The source creates requests to get MAC...

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How To Download, Install Packet Tracer Into Windows?

Cisco Provides different level of certifications for its products and general network topics. We have all ready examined CCNA certifications in the following tutorial. What is CCNA or Cisco Certified Network Associate? Cisco certification exams mostly depends on practical experience. So a person who want to get certified needs practical experience. Here is a list of ways to get practical experience. At work Rent remote labs Using GNS3 similator Using...

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What is IP Address (Internet Protocol Address)?

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 this tutorial we will try to answer the question “What is IP address?” and details...

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Display, Add and Remove Arp Information with Windows Arp Command

Arp is a protocol used to determine host IP addresses from their physical MAC or Ethernet address. Windows operating systems provides arp command in order to manage arp related information. With arp command we can display, add and remove arp entries in ARP cache. ARP Cache ARP and IP entries are hold  in ARP cache every time we want to communicate over network and need IP address we look to the ARP...

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