Category Archives: Ip Address

How to use CCProxy to manage network connection

If you looking for something to manage your Internet connection in between small or medium scale network, proxy is one of ancient yet popular method to use. In the use of proxy CC-Proxy is one of best and easy to use application today for windows environment. You can download the application from following link.

Official Site : http://www.youngzsoft.net/ccproxy/

For the use this application in local environment you have to use the windows server machine or regular windows PC with 2 network adapters. you can also use the usb to rj45 adapter or wifi adapter.

After installation startup screen will look like this. so in order to use this we have to setup CC-Proxy before use.

first of all you must setup local IP and Proxy IP. usually CC-Proxy will automatically detect those but you have to check whether it’s correct or not. To the setup click “Options” icon and then configuration tab will appear.

Pretty much these setting doesn’t need to explain, this image shown here is custom setup, so it’s not necessary to be same as your setting. for now you can keep the defaults settings. Local IP address should be in auto detect mode and IP address shown here should be your proxy address. if it’s not, disable auto detect and manually put the correct address.

If you got this far, It’s pretty much done and in your local network users can use internet connection with proxy enable with their device. For above settings, client should use proxy address 192.168.0.154 and port 808 without user name and password. Also you can use “Monitor” icon to monitor network traffic going through your proxy server.

When the traffic starting to flow, you can see visual represent of network traffic in home tab. Green line represent your local area connection traffic and yellow line represent internet connection. Right click on the green mesh would open  “line chart options” that allows you to control maximum connections and bandwidth sizes.

However in this setup you only can monitor and limited control over the traffic. for more control and management you have to go for further settings with adding users to the network, which I explain in next post — >

 

All About IP Addressing part – 02

What is subnetting?

subnetting is a technique to break up a large network into smaller networks by sacrificing bit Host ID on the subnet mask to be used as a new Network ID.

example:

IP address 192.168.10.0 with a subnet mask 255.255.255.0 default is defined as a class C which means that IP address without subnetting a network address has only one fruit with 254 IP addresses that can be made (192.168.10.1 / 192.168.10.254).

Now we will divide the existing network into several the subnetwork using subnetting techniques by replacing a few bits of Host IDs that exist on the subnet mask with the number 1.

Before subnetting:

IP address: 192.168.10.0
Subnet Mask in Binary: 11111111.11111111.11111111.00000000
Subnet Mask in Decimal: 255.255.255.0

After Subnetting Being:

IP address: 192.168.10.0
Subnet Mask in Binary: 11111111.11111111.11111111.11000000
Subnet Mask in Decimal: 255.255.255.192

1. Determining the number of subnets (Sub Network) has formed. use the formula 2^n-2 where n is the number of 1 bits in the host ID that has been modified (11000000), the importance of the 2^n-2=2. so the IP 192.168.10.0 2 subnets obtained after subnetting new.

2. Determine the Number of Hosts of subnets, use the formula 2^h-2, h is the number 0 on the host ID bits (11000000), then on to 2^h-2=62, so there are 62 hosts persubnet. or in other words from two groups of the subnetworks, each the subnetwork can accommodate 62 computers with different IP addresses.

3. Determining Block subnet and IP address ranges Block subnet is obtained by subtracting 256 (2^8) with the numbers behind the subnet mask that has been modified, 256-192=64, then total the number of these reductions to the same subnet behind the numbers in order to get 64+64=128, 128+64=192. so the IP address that is applied to two new the subnetwork is 64:

192.168.10.64 / 192 168 127, the first subnet

192.168.10.128 / 192 168 191, the second subnet

4. Determining the IP Address that can be used. From the range of IP addresses on each subnet above are not everything can be used as a Host IP address:

Sub-network 1.

Subnet address: 192.168.10.64
The first Host Address: 192.168.10.65
Last Host Address: 192.168.10.126
Broadcast Address: 192.168.10.127

Sub-network 2.

Subnet address: 192.168.10.128
The first host address: 192.168.10.129
Last Host Address: 192.168.10.190
Broadcast Address: 192.168.10.191

Reason why we do subnetting..???

=>Reduce the density of traffic data: a LAN with 254 hosts will be more dense data traffic compared to a LAN with 64 hosts.

=>More the number of hosts, will be less of a chance each host in accessing data in a network which means reducing the performance of the network itself.

=>Simplification of managers: a remote network, the large number of computers that must connect will be made easier to manage when the network itself rather than have to be one big network.