This page was last modified on 18 June 2016, at 15:03.
|Developer(s)||Microsoft Windows Corporation|
|Operating system||MS-DOS, Windows Server|
LAN Manager is the first network operating system designed to support client-server environment, the key LAN Manager components are redirector  and the server . Especially effective LAN Manager supports client-server architecture for database management systems. LAN Manager enables workstations running OS/2, support the network service on a "peer-to-peer". This means that the workstation can act as a database server, print server or media server. The limitation is that only one person other than the owner of the workstation has access to such a peer service.
In 1984, Microsoft released its first network product called Microsoft Networks', which is usually informally called MS-NET. Some concepts in MS-NET, such as an introduction to the structure of the basic components - the redirector, and network server - successfully moved to LAN Manager.
A large number of independent software vendors have licenses for the operating system and maintain their own versions of LAN Manager as part of its networking products. Some of these companies includes such well-known companies as:
- 3Com Corporation 3+Open
- HP LAN Manager/X
- IBM LAN Server
- Tapestry Torus etc.
LAN Manager requires the installation of an operating system file-server OS/2 workstations, that can run under DOS, Windows or OS/2, . LAN Manager uses a 32-bit version of the OS/2 file system, called the HPFS, which is optimized to work on the file server by caching and data directories.
Network security: Lan Manager authentication level
LAN Manager (LM) authentication is the protocol that is used to authenticate Windows clients for network operations, including domain joins, accessing network resources, and user or computer authentication. The LM authentication level determines which challenge/response authentication protocol is negotiated between the client and the server computers. Specifically, the LM authentication level determines which authentication protocols that the client will try to negotiate or that the server will accept. The value that is set for LmCompatibilityLevel determines which challenge/response authentication protocol is used for network logons. This value affects the level of authentication protocol that clients use, the level of session security negotiated, and the level of authentication accepted by servers.
Possible settings include the following:
Disadvantages of LAN Manager
The major weaknesses of LAN Manager authentication protocol are:
Cite error: Invalid
- Redirector - is an operating system driver that sends data to and receives data from a remote device. A network redirector provides mechanisms to locate, open, read, write, and delete files and submit print jobs.
- Server - software that accepts requests from clients
- OS/2 - an operating system that realizes the true multitasking operating in protected mode, x86 processors and higher.