Abstract:
Advancement in technology comes with several opportunities and issues. Organizations are able to move
their businesses online to reach a greater number of potential customers. Security and privacy in
cyberspace are posing a threat to organizations due to establishment of communication links.
These connections are based on trust relationships, where resources are permitted to be accessed from
one party or the other, it is critical to implement the necessary security measures such that, these
established communication links will not be used as a conduit for exploitation.
This paper proposes the use of cryptography (IPsec) and its proper implementation to secure virtual
communication links over the internet. The objective is to illustrate effective implementation of IPsec to
secure L2L (LAN-to-LAN) or S2S (Site-to-Site) communication between systems hosted at two different
organizations to promote security. We answer these questions: Is IPsec able to secure tra c between two
endpoints over the internet? Is it possible to send tra c not permitted to go through the VPN to reach
systems at either side of the VPN tunnel? Proposed model encrypts the entire communication link and
any data sent through it. It further guarantees only the nodes permitted to exchange information can
communicate over such links.
