Showing posts with label Information technology. Show all posts
Showing posts with label Information technology. Show all posts

Saturday, 19 July 2014

Network Operation Systems - Linux | UNIX | Netware | NT Server | Solaris other Networking Servers

Network Operating System - An operating system that supports network is called network operating system. It normally works on a server.Some Examples of Network operating system are windows NT Server, Windows 2000 server, NetWare, Linux and solaris.

1: NetWare
                    Novell,s Netware is a network operating system.It has developed by Novell during mid 1980,s.It is designed for client/server networks.The server portion of this operating system resides on network server and client portion resides on each client computer.
2: Windows NT Server:
                                    Windows NT Server is a product of Microsoft. It is designed for client/server networks.The server in the network uses Windows NT Server. The client computers use Windows NT Workstation or other stand-alone version of windows.
3: Windows 2003 Server:
                                        Windows 2003 server is an upgraded version of windows 2000 server. It has some additional features. It Provides the facilities of website management and hosting application development tools etc.

3: UNIX:
               UNIX is a Multitasking operating system. It was developed in early 1970s at Bell Labroratories. Many versions of this operating system are available. It uses command-line interface. It is mainly use in network environments. It is very popular for its security.

4: Linux:
               Linux is free and multitasking operating system. It was developed in 1991. It is an open source Software. It means that its code is available to the public. Some version of Linux use command-line interface and others use GUI. Some most widely used versions of Linux are from RedHat and Caldera.

5: Solaris:
                 Solaris is a version of UNIX operating system. It was developed by Sun Microsystems. It is a network operating system designed for e-commerce applications.It can manage high traffic accounts and security for web transactions. The client version of Solaris is called CDE. Its stands for Common Desktop Environment.

Tuesday, 13 May 2014

Fix "SSL Certificate of this site is not trusted" error in chrome, Firefox, internet explorer and almost all browsers.


I am receiving lot of complains that when someone open any HTTPS site or any official site an error show, that "SSL Certificate of this site is not trusted in chrome or firefox " and visitors can never open website they want.Users receive red sign in url HTTPS area.

1st: Set your Computer time and date.



Mechanism:

The computer you are using have an IP address.The website you want to open have also an IP Address of its own.When both IP addresses matches then you will see a website open in front of you.If these IP Address not matched then you can never watch website you want.
Your IP address take instructions from your location.Suppose you live in Pakistan then your computer date and time should set according to your area Pakistan.If your computer date and time is not set according to your area , then its hard to find your IP Address location for a website. You will found as this site is not trusted.
After setting your time and date , are you facing same problem ??

2nd:click on HTTPS red error and enable all items.
After fixing above time and date problem your problem should solve.If you are facing same problem then open website you want to visit, you will find red error on HTTPS , click on that error and enable all permissions, such as popups,images, java scripts, location and e.t.c.
Your problem will be solve 100%.
If you have any complaint about this tutorial kindly write in below comment Box.

HTTP / HTTPS - Difference between http and https.



Whenever You visit any website you see in URL Bar HTTP Mostly, But it suddenly change when you any other website such as Facebook or twitter to HTTPS.So what is the difference Between HTTP and HTTPwebsites.

HTTP and HTTPs
First you have to aware that HTTP Stands for Hyper Text Transport Protocol and the addition make it Hyper Text Protocol Secure.Its mean the communicating website is connecting to you in secure way so your data should not leak.The S secure your data from hackers, so we can say that it is Filter paper that seperate good guy and bad guy.
Mostly When you visit shopping , Paypal , Payza any social networking website such as Facebook and twitter then you will see HTTPS in your URL Bar.In shoping websites you will add your credit card number and other secret Information to their data.These website secure your Information in a secure way, 
So be aware !!! when you need to enter your Credit card in any website , first check above that HTTPS Shows or not.If Not then avoid from entering your Card so it can be hack.
So Hyper text transport protocol secure is indicated way for buying something.
If you have any Question About it kindly tell me in Below comment BOX.

Sunday, 11 May 2014

Difference between FTP and TELNET. TELNET and FTP.


I am going to introduce TELNET and FTP and what is difference between TELNET and FTP. Mostly use in Information technology.These two term we remember for file transfer and connecting computer to internet.


TELNET:
Telnet is a program that allows you to connect to a remote computer to the internet.After connecting to computer, Your computer acts like a terminal directory linked to the remote computer.
Telnet is available on the world wide web.The most common web based resources available through Telnet are library catalogs. A telnet Program must be installed on your local computer and configured to your web browser in order to work.


FTP:
FTP Stands for File transfer protocol.It is used on internet for sending files from one place to another. It is specially designed for professionals. Audio, Video, Graphics and data files can be uploaded or downloaded using this protocol.

Different softwares are available, which use this protocol for transferring files on the internet.CuteFTP and WS_FTP are examples of FTP Software.



What is URL, Full URL term Explain, URL Stands for ?

URL Stands for uniform resource locator.The URL is the web address for any given web document. Every web document has a unique URL. Each URL has several parts, which can be demonstrated using the address.


http://www.google.com/services/index.html


http:// This part of the address indicates that it is a web page.


WWW This indicates that the web page you are looking at is part of world wide web. Many websites do not use www but they are still part of the web, as you can see www1.emerging-bloggers.com.


google.com This part of the address is the domain name and indicates the unique address of a website. The domain name also often indicates the type of website.


/services/ The “/” symbol indicates you have moved into a specific directory in the web server. Directories are like the folders on your computer and help to organize web pages in web sites.


Index.htm A word with “.htm” or “.html” following it indicates the name of the specific page in the website you are looking at.


Now its over, i explained the term URL , i hope you all understand.Any question ? type your comment or tweet me @FawadC .