Description. Marco Island is a city in Collier County, Florida, United States, located on an island by the same name in the Gulf of Mexico off the coast of Southwest Florida. It is a principal city of the NaplesâMarco Island Metropolitan Statistical Area. The population was 12,879 at the 2000 census.
A hash function is any function that can be used to map data of arbitrary size to data of fixed size.The values returned by a hash function are called hash values, hash codes, hash sums, or simply hashes. One use is a data structure called a hash table, widely used in computer software for rapid data lookup.Hash functions accelerate table or database lookup by detecting duplicated records in a large file.he values returned by a hash function are called hash values, hash codes, hash sums, or simply hashes. One use is a data structure called a hash table, widely used in computer software for rapid data lookup.
Lock-and-key is a traffic filtering security feature available for the IP protocol. For a complete description of lock-and-key commands, refer to the Lock-and-Key Commands chapter of the Cisco IOS Security Command Reference.To locate documentation of other commands that appear in this chapter, use the command reference master index or search online.poofing is a problem inherent to all access lists, and lock-and-key does not specifically address this problem. To prevent spoofing, configure encryption so that traffic from the remote host is encrypted at a secured remote router, and decrypted locally at the router interface providing lock-and-key.