IPSEC and SSL as solutions for the enterprise network security

When a company starts to build enterprise network, the information technology department always faces the question about which protocol to choose for building a Virtual Private Network (VPN). The answer is not obvious because each protocol has its own pros and cons. Priority of the selection of the protocol to build the VPN depends on specific criteria. These criteria can be the required type of access for users, the level of the network security, the level of data security, necessity of scalability for the network in future, etc. At the moment the most reliable protocols are considered to be Internet Protocol Security (IPSec) and Secure Socket Layer (SSL). This paper discusses and analysis the demand of using these protocols separately or simultaneously.