The Cisco routers have IP virtual private networks that are setup for private use only by a particular user. A user can establish a VPN using the private network by using the private network and the Internet. This will give the user an IP address of his own, and it will be visible on the network. There are certain advantages of having an in-house private network for use by the IT staff and the network clients.
Private networks are used for internal purposes and it provides security to the network. An internal private network helps to increase the security of the network and to limit the access to other network users and to establish connectivity within the company. A business enterprise that has a large number of employees can get a cost saving because they do not need to pay for the public Internet connection for all the employees working in one location. It also allows to make secure connections with other company companies which is needed in certain situations.
One of the reasons for establishing a private VPN is to secure internal network traffic. An IP address is a kind of virtual address and there is much more security associated with the use of such. Any hacker can use the Internet to send any kind of data from their computer to another computer. To restrict the access of this type of traffic, a firewall is needed and this can be provided by the Cisco equipment. There are some advantages of the use of such a firewall system.
By using a private network, all the traffic between two computers will be protected and the network will be secure. In this way, a system administrator can configure different settings for different applications so that the network will be free from interference. An IP address is the only thing that should be allowed in the system and hence the system will be more secure. It is easy to prevent the abuse of the Internet by preventing the access of unwanted visitors andammers.
If you are the network administrator, you can use the private network to protect your company’s confidential data from being compromised. The private IP addressing makes it impossible for anyone to trace the data or intercept it. You can set up the routing for any outgoing data to a particular destination and this will be true for all internal network traffic as well.
If the system is not properly configured, the IP private routing will not work effectively. You have to make sure that the IP address that you are assigning to the internal network is static. As the IP address will remain static, you can ensure that your system will always be up-to-date. You can use the software update tool to do this and you can also get automatic updates through the update manager. This makes it easier to maintain the IP private network if you are not knowledgeable about the software.
You need to change the IP route once in a while to adjust the traffic to the clients. You have to do this periodically to prevent the misuse of the private IP networking system. You also have to assign different IP addresses to different customers depending upon their geographical locations. For instance, there might be a customer that is located in the east zone and another who are located in the west zone. When the customer requests for connection to the system from the east zone, it should be translated as a request for connection from east Asia and when the request is made from the west zone it should be translated as a request for connection from west Asia.
When you are done with the private network configuration, you need to open the ports for the visitors. The default setting for all Cisco switches is Manual-enable. To make it a little more secure, you can also turn on the port disabling. You can do this by using the command port-unreachable-verbose. However, before you turn it on, you should back it off with the use of what is known as Traceable-lane-locking.