Glossary

6to4 A tunneling protocol that enables two nodes running both IPv4 and IPv6 across an IPv4 routing infrastructure to use a special address obtained by combining the prefix 2002::/16 with the 32-bit public IPv4 address to form a 48-bit prefix of the form 2002:wwxx:yyzz::/48 in the case of a public IPv4 address w.x.y.z. These nodes use this address type when communicating with each other.

Access control list (ACL) A list of users and groups that can access an object such as a file, folder, or printer and the type of access granted.

Account lockout A series of policy settings that locks a user out of an account after a predetermined number of incorrect attempts at entering a password has occurred. This increases security by foiling random ...

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