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This is a list of TCP and UDP port numbers used by protocols for operation of network applications. The Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP) only need one port for bidirectional traffic. TCP usually uses port numbers that match the services of the corresponding UDP implementations, if they exist, and vice versa.
The client is authenticating to a server that belongs to a different Active Directory forest that has a legacy NTLM trust instead of a transitive inter-forest trust Where a firewall would otherwise restrict the ports required by Kerberos (typically TCP 88)
Active Directory (AD) is a directory service developed by Microsoft for Windows domain networks. Windows Server operating systems include it as a set of processes and services . [ 1 ] [ 2 ] Originally, only centralized domain management used Active Directory.
For TCP, port number 0 is reserved and cannot be used, while for UDP, the source port is optional and a value of zero means no port. A process associates its input or output channels via an internet socket , which is a type of file descriptor , associated with a transport protocol , a network address such as an IP address , and a port number.
For example in Active Directory Kerberos is used in the authentication step, while LDAP is used in the authorization step. An example of such data model is the GLUE Schema, [ 26 ] which is used in a distributed information system based on LDAP that enable users, applications and services to discover which services exist in a Grid infrastructure ...
Directory Service Configuration — First, the firewall must be configured to communicate with the directory service that stores user group memberships. In this case, an Active Directory server. User Identification — The firewall maps network traffic to specific user IDs by interpreting authentication logs.
There needs to be an application (service) listening on that port, accepting the incoming packets and processing them. If there is no application listening on a port, incoming packets to that port will simply be rejected by the computer's operating system. Ports can be "closed" (in this context, filtered) through the use of a firewall. The ...
The Internet Location Server (ILS) included in Microsoft Windows 2000 offers service on port 1002, while the latest version of NetMeeting requests service from port 389. The choice of 1002 was to avoid conflict with Windows 2000's domain controllers , which use LDAP and Active Directory on port 389, as well as Microsoft Exchange Server 2000 ...