Network – Page 2 – POFTUT

Category: Network


What Is A Router, Tips For Buying Routers and How Does It Work?

Technical or not most of the people know the router word. Those who know the router can understand a different thing from the word. In this tutorial, we will try to explain what is a router in a technical and non-technical way with router functions, router types and router security. What is a Router For? A router is a device which will connect different networks and the internet together. Typical...


nslookup Commands Tutorial with Examples

nslookup is a very powerful tool used to get DNS realted information from DNS servers. We can get web server IP address, Mail Server IP address, Alternative IP addresses, DNS Management Information etc from DNS servers with the nslookup command. Query and Print A Type Records We will start with a simple and general example. We will query and list the A type of records. A type record is used to...


NTP Port Number and Configuration Tutorial For Linux Local System

NTP is a core protocol used today’s IT infrastructure to synchronize date and time information. In order to work properly, we need to configuration NTP port in our server, client and intermediate systems like switch, firewall, router. NTP Port UDP 123 NTP uses the UDP port number 123 by default. NTP services run on UDP protocol because of the UDP simplicity and performative behavior. NTP is also a very simple protocol...


How To Install and Config Polipo Caching Web Proxy On Linux?

Polipo was the best HTTP proxy when it emerged. Since then web behavior has a lot changed and HTTPS became popular. HTTPS prevents intermediates to read traffic and cache them. Polipo is not maintained currently but useful for different cases. Install For Ubuntu, Debian, Mint, Kali We can install polipo for Ubuntu, Debian, Mint, Kali with the apt-get command like below.

Install For Ubuntu, Debian, Mint, Kali We can also install...


What Is Telnet Command and What Is Telnet Used For?

Telnet is a command line protocol used to manage different devices like Server, PC, Router, Switch, Camera, Firewall remotely. Telnet is a very simple protocol which provides simple remote connection and sending commands or data to the remote network connection. This makes telnet very popular among IT systems. Telnet generally comes after SSH for remote system management from the command line. History of Telnet Telnet protocol is created with the...


What Is Static IP Address, Compare with Dynamic IP Address and How To Set For Windows and Linux?

IP addresses are the core mechanism of the Computer networks. The IP address is used to specify the host to communicate and transmit data. There is two type of IP address configuration mechanism. Dynamic and Static. In this tutorial, we will examine the static IP address configuration. Static IP Address Static means stable or not changeable, fixed etc. Static IP addresses set to the host or interface and do not change during...


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...


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...


What Is Online Certificate Status Protocol (OCSP) and Tutorial with Examples?

Certificates like SSL, X.509 are used to secure network traffic. But every certificate has its own life cycle in a distributed environment like the internet we should manage them. Online Certificate Status Protocol aka OCSP is used to manage certificates validity and lifecycle. OCSP standard is defined in RFC 6960 with the name of  X.509 Internet Public Key Infrastructure Online Certificate Status Protocol – OCSP. It makes absolute previously defined certificate...


How To Use Google Chrome Commands?

Google Chrome is the most popular browser used around the world. Google Chrome supports platforms like Windows, Linux, MacOS, Android etc. Google Chrome uses Omnibox address bar which can be used access to the Chrome features and settings easily. Settings – chrome://settings We can use the following command in order to list current Chrome settings.

Search Engine – Settings – chrome://settings/searchEngines Chrome comes with a default search engine which is...

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