Directory Service AMHS Implementation Workshop Chennai India 15

Directory Service AMHS Implementation Workshop Chennai, India 15 th – 17 th December 2008

List of Topics • • Concept of Directory Service ATN Specific Object Classes Uses of Directory Asia/Pacific Interim AMHS Database

Definition of Directory • Definition from SARPs “The Directory is a collection of systems which cooperate to hold a logical database of information about a set of objects in the real world. ”

Concept of Directory Services • Information Model – Schema – Directory Information Tree (DIT) – Directory Information Base (DIB) – Object Classes – Attributes

Concept of Directory Services

ATN Directory Systems • ATN Directory System (ATN DIR) consists of 3 main elements – Directory Information Base (DIB) – Directory Service Agent (DSA) – Directory User Agent (DUA)

ATN Directory Information Base • The information held in the ATN DIR is collectively known as the Directory Information Base (DIB). • The structure of the DIB, called the Directory Information Tree (DIT), defines the hierarchy of record types contained in the directory.

ATN Directory Information Base • Each record type is defined by an object class. • The fields of each record are defined by attributes. • The Directory Schema defines which attributes are contained in each object class.

ATN Directory Service Agent • ATN Directory Service Agent (DSA) • DSA is an application process that provide access to the DIB to DUAs and/or other DSAs. • Answers directory information requests. • Maintains the data base locally and interact with other DSA in order to process requests.

ATN Directory User Agent • ATN Directory User Agent (DUA) • Interface to the directory information for applications. • Requests directory information from attached DSA. The DSA can subsequently forward the request to relevant DSA. • Updates information in the DSAs via attached DSA.

Concept of Directory Services • ICAO Doc 9705 – ATN SARPs Ed. 3 Sub. Volume 7 – Definition of Directory for the ATN environment – Directory Object Class Specification and Attributes for Directory Service Agent (DSA) and Directory User Agent (DUA) – Directory System Schema – Directory System Protocol

ATN Specific Object Classes • • atn-Organizational. Unit atn-Organizational. Person atn-Organizational. Role atn-Application. Entity atn-Certification. Authority atn-Aircraft

ATN Specific Object Classes • • atn-Amhs. User atn-Amhs. Distribution. List atn-Amhs. User. Agent atn-Amhs. Gateway atn-Facility atn-Amhs. MD atn-Idrp. Router atn-Directory. System. Agent

Uses of Directory • ATN AMHS – Name to O/R address look-up and broadcast. • CM – Application capability look-up • Security – Certificate look-up and broadcast

AMHS Uses of Directory • Possible uses of AMHS Directory by AMHS MTAs: – retrieval of remote MTA information • NSAP • MTA name and password • service capabilities

AMHS Uses of Directory • Possible uses of ATN Directory for AMHS Users: – Name Resolution – Distribution-list (DL) Expansion; – Determination of User Capabilities; – Address Conversion; and – Use of certificates for user/message authentication

Asia/Pacific Interim AMHS DB • In the ATNTTF 7 th in 2005, the issue of AMHS Address database was discussed. • In 2007, the Asia/Pacific Interim AMHS DB was operational. • Data format is based on the Asia/Pacific AMHS MTA/UA Naming Registration Table & Contact List • This DB is “Off-line” database.

Asia/Pacific Interim AMHS DB • AMHS MTA/UA Registration Table – Contracting State : Authority administering the MTA. – MTA ID : Numbering scheme where each MTA is assigned with an ordinal number. – User Agent ID : Sub-ordinate number assigned to the User Agent Name registered under a MTA. – Addressing scheme : Addressing scheme recommended by ATN SARPS. Values are limited to XF or CAAS. – Country-name : The “C” value of AMHS MD identifier. – Administration-domain-name : The “A” value of AMHS MD identifier. – Private-domain-name : The “P” value of AMHS MD identifier. – Organization name : The “O” value of attributes identifying an geographical unit or an organization within MD.

Asia/Pacific Interim AMHS DB • AMHS MTA/UA Registration Table – Organization-unit-name-1 : The “OU 1” value of attributes identifies 4 -letter location indicator within the organization “O”. – User Agent (Direct User only) : The “CN” value (Common Name) of attributes identifies a User Agent (UA) i. e. direct user within MD. – Description of user : Brief description of the UA, the direct user. NOC = network operating centre – MTA Name : The name of the MTA hosting the AMHS user. (Used in AMHS binds. ) – NSAP address : NSAP address of the MTA. TSEL value : TSEL value of the MTA. – Capability : The type of services supported by the MTA.

Asia/Pacific Interim AMHS DB • AMHS MTA Administration Contact List – Contracting State : Authority administering the MTA. – MTA ID : Numbering scheme where each MTA is assigned with an ordinal number. – MTA Name The name of the MTA hosting the AMHS user. (Used in AMHS binds. ) – Point of contact : Name of person responsible for the administration of the MTA. – Contact e-mail address : E-mail address of the Office or person responsible for the administration of the MTA. – Contact telephone number & Fax number: – Contact mailing address Official correspondence address of the Office or person responsible for the administration of the MTA.

Asia/Pacific Interim AMHS DB http: //amhsdb. aeroth ai. co. th

Asia/Pacific Interim AMHS DB

Asia/Pacific Interim AMHS DB

Thank you