sentences:  While NFS provides applications on Unix with full filesystem semantics, not all of these might be needed in a distributed, read-only web environment.Conversely, access restrictions—such as requiring the use of restricted ports for originating requests—normally used in closed environments are not usually applicable in public distributed environments.WebNFS makes use of a well known port (port 2049 on both UDP and TCP) thus avoiding the overhead and unpredictability of using the ONC RPC portmap protocol.