Virtualization has enabled various web based communication methodologies being adopted inside an enterprise. This de-limits the dependencies of resources; be it human resource or system or application resources to physically rely on the LAN instead they can logically connect themselves with the organization.Machines are linked with the LAN of the company in a private environment called as Virtual Private Network VPN, which can be accessed over the conventional internet connection. Users are directed to the intranet of the organization with a specific address location to gain remote access. Since the access relies heavily on the internet connection, security is a key concern in this type of network.IP based security IPSec protocol is defined to ensure the authentication and encryption of message packets while transmitting them over the internet. This assists both the users and enterprises to securely communicate over the standard internet connection in order to support the business practices and operations.Deploying an IP based security inside an enterprise network delivers the following benefits and security solutions:
IPSec can be implemented on the firewall or router so that all the traffic getting exchanged between two ends i.e. from enterprise LAN to internet and internet to enterprise LAN can be monitored. Strong security measures can be applied at the interface so as to secure the inside perimeter of intranet.
IPSec does not affect the software at the application layer and so incompatibility issues do not arise with it. IPSec is implemented at the transport layer and is transparent to application yet effective in terms of security.
Individual level security can be implemented using IPSec for offsite and sensitive machines and systems. This provides the secure exchange of messages between remote machine and enterprise LAN and even within the sub-network created inside an organization for sensitive and confidential application and systems for advanced security.
IPSec is a universally adopted security protocol so different LAN around the world following local standards can easily communicate. This reduces the need of message transformation according to the type of LAN as IPSec has been accepted as an integral standard inside different networks.
An IPSec protocol establishes a tunnel or virtual pipeline between the end user’s system i.e. workstation and the enterprise LAN or routing device to protect any further communication between nodes. Once the tunnel is established, workstations can have subsequent sessions with the device behind the IPSec gateway. The packets thus sent across the network are encrypted and are authenticated at both sides before further de-ciphering. However, it doesn’t actually reduce the reading performance of the terminal and protected packet reaches as a normal IP packet at each terminal or LAN.
: Security protocols,IPSec,network security,VPN