Sunday, 23 March 2014

data sharing between two computers or between two different machine

we can connect two computer and share data between them trough simple cable name Straight-through or  cross-over Cable as shown in the figure , i  connect my own laptop with my friend computer and copy some songs and videos through it , without any USB or some memory card etc this method is a safe method through which i can not only copy data but can also read/write data in the the other machine(laptop) .

BY read i mean i can copy only and not cut it or delete it, by write i mean i can not only copy the data in the guest computer but can also make changes in them, e-g, i can edit ,cut ,copy,delete, etc in them , that is , i can control other computer from the remote , and this is a good way for a hacker to access other computer.

sufyan and hashim laptops connection through cable 


Objectives:

Build a category 6 (cat 6) straight-through cables.
Build a category 6 (cat 6) cross-over cables.
Test both cables.

Tool Required:

Cate-6 network cable
RJ-45 connectors
Cable cutter
Crimping tool
Cable tester

Theory:

        The cables that need to be arranged for networking, two things must be keep in mind whether the systems (machine) are same or not, for such systems combination; following technique are valid to be use and implemented before going for a networking.

Straight-through Cable:

                          Straight through cable is a cable used for networking between any two systems in a condition if both the systems/machines are of the different origin i.e. networking between any computer (MDI) and a hub (MDIX). The cable is centered in between two RJ-45 connectors.  The color chart and technique for the arrangement of the cable is given below.


Cross-over Cable:

                          Cross-over cable is a cable used for networking between two systems in a condition if both the systems/machines are of the same origin i.e. networking between computers (MDI) with another computer (MDI). The cable is centered in between two RJ-45 connectors.  The color chart and technique for the arrangement of the cable is given below.


  

Construction/Procedure:

            Construction of straight-over and cross-over cable can be made through the cable cutter and crimping tool, with the help of rules given below.
First of all remove the insulation from the cable up to 2 inches at both of the end.
Align the cables according to the color chart respectively.
Level up the cable and adjust then inside the RJ-45 connector.
Use the crimping tool accordingly to tighten the cable under the jaws of the connector.
'The above color charts are aimed to assist in the construction of straight-over and cross-over cable respectively'.

Testing:

   Test the cable to ensure that it will function in the field. Miss-wired and incomplete network cables could lead to physical damage of computers system equipment, in order to confirm whether the cable is functioning well or not a simple cable tester can quickly verify that information. A sample of cable tester is shown below:

 
                                 Fig: A simple cable tester.


Creating a Network:

      Creating a network between two computers can enable individuals share different files and a folder which is an easiest and a secured way of transmitting files from one system to another. In order to make a network connection between two different computers the following steps were carried out on the host as well as on the guest computer.
Plug in the cable on both the computers.
Open networking and sharing center>Change Adopter settings>right click on LAN select properties, assign IP. Address to both the computers.
Go to advanced sharing settings, Turn on first three options in HOME and PUBLIC networking.
Remove the user name, Turn off the antivirus software and its firewall.
Ping the laptop using ping IP. Address.
To share a folder in a drive, go to 'share with' option on the task bar at the top, select ' with every one', and enjoy sharing the different files and folders.
Physical Implementation:

Host computer: 

Host Name: sufyan 
IP Address: 192.168.1.101

 


Guest computer:

Guest Name: hashim
IP Addresss: 192.168.1.102
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assign the value of IP and GATEWAY of both laptops in such away that the IP of one is the GATEWAY of another and GATEWAY of one laptop become the the IP of another.

 




 







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