NFSv4 offers several advantages over Fibre Channel protocol, one of which is improved security. NFSv4 is designed to be more secure than its predecessors, providing strong security features that are not inherent in Fibre Channel. It includes mechanisms for authentication, integrity, and privacy, which are part of its standard protocol suite. NFSv4 also integrates well with security infrastructures like Kerberos, allowing for secure, authenticated access to file systems over a network.
References := Newer Is Sometimes Better: An Evaluation of NFSv4 - Stony Brook University, The Advantages of NFSv4.1 - SNIA on Network Storage