Latest commit. Git stats 2 commits. Failed to load latest commit information. View code. Samba is maintained by the Samba Team, who support the original author, Andrew Tridgell. The very short answer is that it is the protocol by which a lot of PC-related machines share files and printers and other information such as lists of available files and printers.
Add on packages that achieve the same thing are available for DOS, Windows 3. Alternatives to SMB include Netware, NFS, Appletalk, Banyan Vines, Decnet etc; many of these have advantages but none are both public specifications and widely implemented in desktop machines by default. Many people want to integrate their Microsoft desktop clients with their Unix servers.
Others want to integrate their Microsoft etc servers with Unix servers. This is a different problem to integrating desktop clients. Here is a very short list of what samba includes, and what it does. Samba can be the master browser on your LAN if you wish. Related packages include: - cifsvfs, an advanced Linux-only filesystem allowing you to mount remote SMB filesystems from PCs on your Linux box.
This is included as standard with Linux 2. If you want to contribute to the development of the software then please join the mailing list. Remember that free software of this kind lives or dies by the response we get. The global stanza specifies settings that affect all the other stanzas in the smb.
Configuration parameters are documented in the smb. Some parameters can be used only in the global stanza, some only in share or meta-service stanzas, and some can be used globally or just within a share or meta-service stanza. A minimal smb. The directory in which Samba stores the tdb files is determined by compile-time directives. Samba-3 stores tdb files in two locations. The best way to determine these locations is to execute the following command:.
Samba-3 also uses a number of tdb files that contain more mundane data. The location of these files can be found by executing:. All persistent tdb files should be regularly backed up. Use the tdbbackup utility to backup the tdb files. All persistent tdb files must be preserved during machine migrations, updates and upgrades.
The temporary tdb files do not need to be backed up, nor do they need to be preseved across machine migrations, updates or upgrades. Exists only when the tdbsam passwd backend is used. Read-only Samba database of a Windows registry skeleton that provides support for exporting various database tables via the winreg RPCs. This file contains very sensitive information that must be protected.
Includes user lists, etc. Samba essentially consists of two or three daemons. A daemon is a UNIX application that runs in the background and provides services. An example of a service is the Apache Web server for which the daemon is called httpd. In the case of Samba there are three daemons, two of which are needed as a minimum. This daemon handles all name registration and resolution requests. It is the primary vehicle involved in network browsing. It handles all UDP-based protocols.
The nmbd daemon should be the first command started as part of the Samba startup process. It also manages local authentication.
It should be started immediately following the startup of nmbd. It is also needed when Samba has trust relationships with another domain. The winbindd daemon will check the smb. When Samba has been packaged by an operating system vendor, the startup process is typically a custom feature of its integration into the platform as a whole. Please refer to your operating system platform administration manuals for specific information pertaining to correct management of Samba startup.
There are sample configuration files in the examples subdirectory in the source code distribution tarball package. It is suggested you read them carefully so you can see how the options go together in practice. See the man page for all the options. It might be worthwhile to start out with the smb.
It contains plenty of comments. The simplest useful configuration file would contain something like that shown in Another simple smb. This will allow connections by anyone with an account on the server, using either their login name or homes as the service name.
Note: The workgroup that Samba should appear in must also be set. Make sure you put the smb. Note, the correct location of this file depends on how the binary files were built. You can discover the correct location by executing from the directory that contains the smbd command file:. For more information about security settings for the [homes] share, please refer to Securing Samba.
It's important to validate the contents of the smb. If testparm runs correctly, it will list the loaded services. If not, it will give an error message. Make sure it runs correctly and that the services look reasonable before proceeding. Enter the command:. In this chapter, you maintain that same approach to printing, but??? You validated the operation of these services and saw an effective implementation of a Samba domain controller using the tdbsam passdb backend. The objective of this chapter is to introduce more complex techniques that can be used to improve manageability of Samba as networking needs grow.
A note of caution is important regarding the Samba configuration that is used in this chapter. The use of a single domain controller on a routed, multisegment network is a poor design choice that leads to potential network user complaints.
This chapter demonstrates some successful techniques in deployment and configuration management. This should be viewed as a foundation chapter for complex Samba deployments.
As you master the techniques presented here, you may find much better methods to improve network management and control while reducing human resource overheads. You should take the opportunity to innovate and expand on the methods presented here and explore them to the fullest.
Business continues to go well for Abmas. Meany is driving your success and the network continues to grow thanks to the hard work Christine has done. You recently hired Stanley Soroka as manager of information systems. Christine recommended Stan to the role. She told you Stan is so good at handling Samba that he can make a cast iron rocking horse that is embedded in concrete kick like a horse at a rodeo. You need skills like his. Christine and Stan get along just fine.
Let's see what you can get out of this pair as they plot the next-generation networks. Ten months ago Abmas closed an acquisition of a property insurance business. The founder lost interest in the business and decided to sell it to Mr. Because they were former university classmates, the purchase was concluded with mutual assent. The acquired business is located at the other end of town in much larger facilities.
The old Abmas building has become too small. Located on the same campus as the newly acquired business are two empty buildings that are ideal to provide Abmas with opportunity for growth.
Abmas has now completed the purchase of the two empty buildings, and you are to install a new network and relocate staff in nicely furnished new facilities. The new network is to be used to fully integrate company operations. You have decided to locate the new network operations control center in the larger building in which the insurance group is located to take advantage of an ideal floor space and to allow Stan and Christine to fully stage the new network and test it before it is rolled out.
Your strategy is to complete the new network so that it is ready for operation when the old office moves into the new premises. The acquired business had network users. The old Abmas building housed network users in unbelievably cramped conditions. The network that initially served users now handles users quite well.
The two businesses will be fully merged to create a single campus company. Building 2 houses network users. You have decided to connect the building using fiber optic links between new routers. As a backup, the buildings are interconnected using line-of-sight high-speed infrared facilities. The infrared connection provides a secondary route to be used during periods of high demand for network bandwidth.
You no longer need to worry about firewall facilities on your network. Stanley and Christine have purchased new server hardware.
Christine wants to roll out a network that has whistles and bells. Stan wants to start off with a simple to manage, not-too-complex network. He believes that network users need to be gradually introduced to new features and capabilities and not rushed into an environment that may cause disorientation and loss of productivity. Your intrepid network team has decided to implement a network configuration that closely mirrors the successful system you installed in the old Abmas building.
The new network infrastructure is owned by Abmas, but all desktop systems are being procured through a new out-source services and leasing company. Under the terms of a deal with Mr. The deal allows you to add workstations on demand. This frees Stan and Christine to deal with deeper issues as they emerge and permits Stan to work on creating new future value-added services.
DirectPointe Inc. They automatically roll that out to each desktop system. You must keep DirectPointe informed of all changes. Buildings 1 and 2 each have a local server for local application servicing.
It is a domain member. The new system uses the tdbsam passdb backend. Printing is based on raw pass-through facilities just as it has been used so far.
All printer drivers are installed on the desktop and notebook computers. The example you are building in this chapter is of a network design that works, but this does not make it a design that is recommended.
The same rule says that if there are more than 50 clients per domain controller, they are too busy to service requests. Let's put such rules aside and recognize that network load affects the integrity of domain controller responsiveness. This network will have clients serviced by one central domain controller.
This is not a good omen for user satisfaction. You, of course, address this very soon see??? Stan has talked you into a horrible compromise, but it is addressed.
Just make certain that the performance of this network is well validated before going live. A single PDC is being implemented.
This limitation is based on the choice not to use LDAP. Many network administrators fear using LDAP because of the perceived complexity of implementation and management of an LDAP-based backend for all user identity management as well as to store network access credentials.
Because of the refusal to use an LDAP ldapsam passdb backend at this time, the only choice that makes sense with users is to use the tdbsam passwd backend.
This type of backend is not receptive to replication to BDCs. If the tdbsam passdb. When this happens, there is no mechanism to return the changed password to the PDC. All domain user, group, and machine accounts are managed on the PDC. This makes for a simple mode of operation but has to be balanced with network performance and integrity of operations considerations. A single central WINS server is being used.
That is why a single WINS server is being implemented. This should work without a problem. BDCs make use of winbindd to provide access to domain security credentials for file system access and object storage. Each subnet has its own DHCP server.
All network users are granted the ability to print to any printer that is network-attached. All printers are available from each server. Print jobs that are spooled to a printer that is not on the local network segment are automatically routed to the print spooler that is in control of that printer.
The specific details of how this might be done are demonstrated for one example only. The network address and subnetmask chosen provide usable IP addresses in each subnet.
If in the future more addresses are required, it would make sense to add further subnets rather than change addressing. This case gets close to the real world. You and I know the right way to implement domain control. Politically, we have to navigate a minefield. In this case, the need is to get the PDC rolled out in compliance with expectations and also to be ready to save the day by having the real solution ready before it is needed. That real solution is presented in??? The following configuration process begins following installation of Red Hat Fedora Core2 on the three servers shown in the network topology diagram in???
You have selected hardware that is appropriate to the task. Carefully install the configuration files into the correct locations as shown in??? You should validate that the full file path is correct as shown. Table 4. Verify that your hostname is correctly set by running:.
This is necessary so that during startup the system is able to resolve all its own names to the IP address prior to startup of the DNS server.
You should check the startup order of your system. All DNS name resolution should be handled locally. This instructs the name resolver function when configured correctly to ask the DNS server that is running locally to resolve names to addresses. Add the root user to the password backend:. This account is essential in the regular maintenance of your Samba server. It must never be deleted. If for any reason the account is deleted, you may not be able to recreate this account without considerable trouble.
Create the username map file to permit the root account to be called Administrator from the Windows network environment. Example configuration files for similar zones were presented in??? Follow the instructions in the printer manufacturer's manuals to permit printing to port Use any other port the manufacturer specifies for direct mode, raw printing.
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