Cryptographic overhead of IPsec Protocol suit Research Paper

Cryptographic overhead of IPsec Protocol suit - Research Paper Example The reality that the Internet is deficient in security is still undeniable. So to solve this issue researchers are trying to increase the network security at each layer by designing a range of security protocols. The designed protocols include PGP, S/MIME, and SET which are specifically designed to ensure the security of the application layer. In this scenario, SSL/TLS are used on the transport layer. In this race, IPSec is one of the most important security protocol, which is designed for dealing with the network layer security, ensuring the availability of security services like that data source authentication, access control, data confidentiality and integrity and processing data packages on the IP packet layer (Zheng & Zhang, 2009; Meng, et al., 2010). This report presents a detailed analysis of IPSec and associated aspects. IPSec IPSec is a complete suite of protocols, which carry out specific tasks. As discussed above, the basic objective of IPSec is to provide a variety of sec urity facilities to traffic transmitting between a source and destination. In this scenario, a source or destination can be a host or a router. In addition, these facilities can be used for all packets sent or received, or simply to a particular kind of transmission such as FTP or telnet. Figure1 demonstrates how IPSec ensures the security of data transmission between a host and a destination (Clark, 2002): Figure 1IPSec Operation, Image Source: (Clark, 2002) In this diagram a red line is used to demonstrate that IPSec is implemented on the path between the Host B and Router 1. Basically, IPSec provides a variety of security mechanisms for securing transmissions over a network and these mechanisms can be implemented in different ways. Additionally, IPSec can perform operations on particular kind of traffic at the same time as remaining traffic is moved on a defenseless path. This process is clearly mentioned in the figure, in this figure 1 black links are used to demonstrate this ki nd of communication. A number of separate IPSec protected connections can be established between the two routers and between Host B and Router 1 (Clark, 2002). Implementation of security through IPSec In their paper, (Zheng & Zhang, 2009) provides a detailed discussion on the working of IPSec and the way it ensures the surety of transmission over a network. According to their viewpoint, IPSec implements the security in a network by maintaining the security associations (SAs). In this scenario, a security association is used as a basis to identify the security parameters that will be utilized in data transmission to make it protected, for instance IPSec security protocol, encryption algorithm, hash function and encryption key. Additionally, each security association is typically specified by an exclusive set of parameters such as destination IP address, security parameter index and security protocol. In addition, these associations are established after the negotiation between the co mmunicating hosts in the networks. IPSec is also responsible for maintaining a Security Policy Database (SPD). In fact, a network interface that is established using the IPSec, possesses a pair of Security Policy Database and Security Association Database, which help in processing incoming and outgoing IP packets. One entry of Security Association Database is equal to a security association, on the other hand, Security Policy Database entry refers to a security policy. In this scenario,

Comparison of Venus of Willendorf and the Lady of Auxerre Term Paper

Comparison of Venus of Willendorf and the Lady of Auxerre - Term Paper Example Artwork traces its origin back from the ancient days. The use of symbols by man has been in existence since time immemorial. Signs and symbols were used as a form of communication as they represented different objects, ideas, and even events. For example, the dove was used as a symbol of peace while the anchor represented hope. Symbols have also been used for confidentiality purposes; there are cases where some communities used symbols to preserve their secrets so that only members of the particular community would understand the message being conveyed and have any outsiders excluded from understanding. It has been argued that these symbols are not just mere fantasies and imaginations by man but contain some fragments of truth in them. The use of symbols has also received appreciation among Christians. This is evident from the writings of a Catholic scholar one Father Martin C. Darcy. From one of his books â€Å"The meaning and matter of history,† he appreciates the existence of poetic insight and myth and insists that they should not be written off. He goes ahead to note that myths and symbols created a link between the old age dry facts and the present day civilization. This, therefore, indicates that the signs and symbols that have always existed from time immemorial are of great significance to mankind and need to be studied in the depth to get to understand what they actually stand for. These sign and symbols convey important messages and lessons from the ancient times and should therefore not be ignored.   The Venus of Willendorf is artwork in the form of sculpture. This artwork is a statuette of an obese female figure approximately 11 cm high that is about 4.3 inches. Conspicuously, the feet supporting the obese figure are quite small and the ankles are not easily visible. The artwork behind the sculpture portrays vast knowledge in the field of anatomy.