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Kea is an open-source DHCP server developed by the Internet Systems Consortium, authors of ISC DHCP, also known as DHCPd.Kea and ISC DHCP are both implementations of the Dynamic Host Configuration Protocol, a set of standards established by the Internet Engineering Task Force (IETF).
The DHCP server then offers the "lease" of an IP address to the client, which the client is free to request or ignore. If the client requests it and the server acknowledges it, then the client is permitted to use that IP address for the "lease time" specified by the server. At some point before the lease expires, the client must re-request the ...
IP address management (IPAM) is a methodology implemented in computer software for planning and managing the assignment and use of IP addresses and closely related resources of a computer network. It does not typically provide Domain Name System (DNS) and Dynamic Host Configuration Protocol (DHCP) services, but manages information for these ...
free software GPLv2: Python: dnsmasq: Simon Kelley 2001 2.90 (February 13, 2024; 11 months ago (1] free software GPLv2 or GPLv3: C: ISC DHCP: Internet Systems Consortium: 1999 Extended Support Version: 4.1-ESV-R16-P1 (May 26, 2021; 3 years ago (2]
The DHCP server permanently assigns an IP address to a requesting client from a range defined by an administrator. This is like dynamic allocation, but the DHCP server keeps a table of past IP address assignments, so that it can preferentially assign to a client the same IP address that the client previously had. Manual allocation
The IP guard initially blocks all traffic except DHCP packets. When a client receives a valid IP address from the DHCP server the IP address and switch port relationship are bound in an Access Control List (ACL). The ACL then restricts traffic only to those IP addresses configured in the binding. [9]
Where no DHCP server is available to assign a host an IP address, the host can select its own link-local address. Using a link-local address, hosts can communicate over this link but only locally; Access to other networks and the Internet is not possible. There are some link-local IPv4 address implementations available:
ClearOS is based on CentOS and Red Hat Enterprise Linux, [5] designed for use in small and medium enterprises as a network gateway and network server with a web-based administration interface. [6] It is positioned as an alternative to Windows Small Business Server. [7] ClearOS is the successor to ClarkConnect.