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Line 1: − {{Languages|SME_Server:Documentation:Administration_Manual:Chapter5}} − ===Installation et configuration de votre Distribution SME Server=== − Les sections suivantes expliquent en détail le processus d'installation du la SME Server. − {{Note box|Si vous avez déjà installé et configuré un serveur et que vous souhaitez réinstaller la SME, vous devez utiliser la procédure décrite dans la section 5.3. de Mise à niveau depuis une version précédente afin de préserver et de conserver votre configuration et les données existantes. Une nouvelle installation va effacer tous les comptes déjà existants des utilisateurs, des répertoires d'utilisateurs, des i-bay contenues, des sites Web et les paramètres de configuration. Si vous ne l'avez pas déjà fait, vous pouvez sauvegarder le contenu de votre serveur sur un de vos ordinateurs de bureau. Vous pouvez le faire facilement en sélectionnant "sauvegarde ou de restauration" depuis le gestionnaire de serveur, comme expliqué dans le chapitre 10.1.|| − }} − ====Termes et conditions de licence==== − En installant le logiciel SME Server, vous acceptez les termes de la licence open source et les conditions qui y sont associées. Vous pouvez lire ces termes et ces conditions au Chapitre 1.2. de ce guide sous le titre "logiciels conditions des licences". − − ====Support du RAID1 (miroir de disques)==== − Avec la SME Server, vous avez la possibilité de mettre en place un miroir de disque, aussi appelée RAID niveau 1. Avec un miroir de disque, vous écrivez toutes vos données sur deux disques durs distincts installés sur votre serveur. L'un est le miroir de l'autre. Si le disque principal connait l'expérience d'une panne matérielle, le disque miroir poursuivra ses activités comme si rien ne s'était passé. Toutes vos données seront protégées. − − La Raid 1 peut être fait soit d'une manière logicielle (inclue dans la SME Server) ou matérielle. − − =====Raid Logiciel===== − La SME Server est fournie par défaut avec une configuration automatique du ou des disques en RAID. Le niveau de Raid dépend du nombre de disques installés. Le serveur est configuré pour accepter n'importe quel nombre de disques durs et fonctionnera correctement en choisissant le Raid le plus adapté. Vous pouvez vérifier l'état du RAID à partir de la console. Si vous souhaitez plus tard ajouter plus de disques, il suffit de les installer et de demander au serveur via la console de créer le miroir. Il faudra un certain temps pour le construire alors faites-le pendant la maintenance périodique. Les Disques durs peuvent être soit SCSI, IDE, ou SATA mais nous vous conseillons vivement qu'ils soient de la même taille et du même type. − − Il ya plus d'informations techniques sur le Raid à http://wiki.contribs.org/Raid − − =====Raid Matériel===== − Avec le Raid matériel, vous utilisez un contrôleur de disque RAID spécial pour créer une redondance sur plusieurs disques. Commele Raid est effectué par le matériel, les performances peuvent être considérablement plus rapide que le Raid logicielle. En outre, il peut simplifier la configuration, car pour le système d'exploitation l'ensemble du système de disque RAID ressemble à un disque unique. Vous devriez pouvoir utiliser n'importe quel contrôleur RAID matériel SCSI pris en charge. − − Si vous allez utiliser du Raid matériel, vous ne devez pas choisir Installez - Double disque dur avec du RAID-1 au cours de la procédure d'installation décrite dans la section 5.4. Installation du logiciel. (Cela permettra miroir logicielle.) Au lieu de cela, vous devez faire une installation standard de la SME Server. − {{Note box|Using one of the supported hardware RAID controllers, you will be able to upgrade from an earlier version of the SME Server to version 6.x using the standard upgrade process detailed in section 5.3. Upgrading From A Previous Version. You should back up all your data and test carefully after installation.}} − − ====Upgrading From A Previous Version==== − If you have previously installed a server and now wish to upgrade to version 7, you can do so while preserving your configuration data. To do so, select Upgrade from the appropriate screen in the installation process as described in section 5.4. Installing the Software. − − While the upgrade should proceed smoothly, we do recommend that you back up your system prior to performing this upgrade just to be safe. − Also see the related Howto [[:UpgradeDisk]] if you are restoring to a new server or new Drive. − − [[Bugzilla: 6732]] and [[Bugzilla: 7056]] − {{Warning box|Before performing an upgrade to SME 8 from version 7.xx you need to fully update the installation of version 7.xx before attempting the upgrade.}} − − {{Warning box|It is not possible to use the Upgrade option to add software mirroring (RAID1) to an existing server.<br /> − <br /> − If you previously installed software mirroring with a previous version of the software, you should be able to upgrade without any problems. However, if you want to upgrade a previous version of the software that was not installed with software mirroring to use software mirroring (RAID1) support, you should:<br /> − <br /> − 1. perform a backup through the server manager as detailed in chapter 10.1. Backup or restore<br /> − 2. perform a fresh install selecting the software mirroring option<br /> − 3. restore the backup through the server manager<br /> − }} − − ====Installing the Software==== − − [[bugzilla: 6401]] − {{Note box|If your cdrom is set as hda then the following error message may appear in the console during startup: "Setting up Logical Volume Management: /dev/hda: open failed: No medium found 2 logical volumes(s) in volume group "main" now active"}} − − [[Bugzilla: 6996]] − {{Note box|Hardware that may include an internal tape drive may experience a Installer fail immediately after cd check or skipping cd check, see disconnect the tape drive retry install again }} − − {{Note box|If you are configuring your system with RAID1 support, notice that your step 4 below will be slightly different. If you skipped section 5.2 RAID1 Support (Disk Mirroring), it would be advisable to read it before proceeding.}} − − '''Step 1''': Insert the CD-ROM media. − − '''Step 2''': You will be given the option of testing the CD --ROM-- media before beginning installation. Choose '''OK''' to test the CD media or choose '''Skip''' to start the installation. − − [[Image:000.png]] − − '''Step 3''': Select the language you would like to use during the installation process. − − [[Image:005.png]] − − '''Step 4''': Select which model keyboard is attached to your computer. − − [[Image:006.png]] − − '''Step 5''': You are informed that all disks will be formatted and any data will be lost. You must choose '''Yes''' to proceed. − − − {{Warning box|The installation process formats and erases all attached hard drives. USB hard drives are considered non-removable drives. Removable drives are USB pen drives and floppy/cd rom drives. The installer ignores all removable drives and uses all non-removable drives that are at least 2Gb in size. − − If you have multiple hard drives, be sure to back them up prior to starting the installation process. Be sure to unplug USB drives.}} − − − [[Image:008.png]] − − '''Step 6''': Select which time zone you are in. The installation process will now automatically proceed to install the necessary packages. − − [[Image:009.png]] − − '''Step 7''': Finishing the installation is automatic and takes only a few minutes. At the end of the process, you will be prompted to remove the CD and then to reboot your computer. − − [[Image:019.png]] − − {{Warning box|The installation (or upgrade) process rewrites the boot sector on your hard drive. This may cause machines with BIOS boot sector virus detection to not boot unattended. This detection should be disabled in your system's BIOS.}} − − ====Restoring a Backup==== − If you have a tar backup (usually smeserver.tgz) you are prompted if you wish to restore. Enter your media, CD, DVD, USB Disk or Tape drive − − If you have a DAR backup perform your restore from the server-manager after configuration. − − ====Configuring your SME Server==== − {{Tip box|To change configuration settings, you have set during install, at a later date you can login as admin user to your server console and choose the option to Reconfigure your server. You will be take through the configuration routine just like during installation. Make your necessary changes or use the Keep option to preserve the settings you have set previously.}} − Once your system has restarted (so that it is no longer booting from the installation CD), you are ready to configure your system. − − If your ISP provided you with a summary of your configuration choices and network information, we suggest that you keep it handy while completing the screens in the configuration section of the server console. − − There are several types of configuration parameters that must be entered into your server: − * the system password − * the type of ethernet adapters (network interface cards, or NICs) that will be used by your server to communicate with the internal network and the Internet (or external network). Typically, the server software will detect this information automatically. (Note that if you are connecting to the Internet with a dialup connection, you only need one ethernet adapter.) − * configuration for the internal (local) network - you must provide information about your internal network so that your server can communicate with other machines on your local network. − * operation mode - you must select whether your server will operate in server and gateway mode or server-only mode. − * configuration for the external network/Internet - you must configure your server so that it can communicate with your ISP either by a dedicated connection or using a dialup connection (only for server and gateway mode). − * miscellaneous information - there are several final items to configure, such as whether to allow your users to use a proxy server, whether to provide status reporting to Contribs.org, and whether you wish to secure the server console so that it can only be accessed using the administrator's password. − − As you select a given configuration parameter, you will be presented only with the screens necessary for your given configuration. Each screen will provide you with a simple, detailed explanation of the required information. − − {{Note box|As you move through the configuration screens, you will notice that there is a "Keep" option which will allow you to keep the choices you may have made previously. Obviously, when you are configuring your system for the first time, many of these choices will not have been made, but if you later go back to re-configure the system, this option can save time.}} − − ====Setting Your Administrator Password==== − As shown in the image below, the first thing you will be asked to do is to set the system password. This is the password you will enter to access the web-based server manager. Depending on how you configure the system, you may also need to enter this password to access the server console. It is extremely important that you choose a good password and keep that password secret. − − Anyone who gains access to this password has the power to make any change to your server! − − [[Image:5.6%20setting%20your%20admin%20password.png]] − − After you enter the password once, you will be asked to type it again to confirm that the password was recorded correctly. The password will also be examined to determine how strong it is from a security point-of-view. If it is found to be weak (for instance, a dictionary word), you will see an additional screen asking if you really want to use this password. You will have the option to go back and change to a stronger password or to continue using the weaker password. − − {{Warning box|You can use any ASCII printable characters in the administrator password. As this password gives someone total control over your server, you should choose a password that cannot be guessed easily. A good password should contain mixed upper- and lower-case letters, numbers and punctuation, yet also be easy to remember. An example might be "IwmSMES!" as in "I want my SME Server!" (Please don't use this example as your password!)}} − − ====Configuring Your System Name and Domain Name==== − As shown below, your next step is to enter the primary domain name that will be associated with your SME Server. (You can later configure other virtual domains that work with the server.) − − [[Image:Set_primary_domain_name.png]] − − Next you need to provide a name for your server. You should think carefully about this as changing it later may create additional work. (For instance, Windows client computers may be mapping drives to your server using its name. Those clients would need to remap the drive using the new name.) − − {{Tip box|You should make the system name as unique as possible in case you someday decide to link your server to another server using an IPSEC VPN. When you do, each server will need a unique name. Using some type of theme, such as location names, may be an effective way to ensure unique names.}} − − [[Image:Select_system_name.png]] − − ====Configuring Your Local Network==== − − =====Selecting Your Local Ethernet Adapter===== − An ethernet adapter - also called an ethernet card or network interface card (NIC) - is a special piece of hardware that serves as the interface between a computer and the ethernet network. It connects your computer and the ethernet, allowing the computer to communicate with other computers and devices on the network. − − A computer needs a special software program, called an "ethernet driver", to use an ethernet adapter. Which ethernet driver is required depends on which ethernet adapter is installed on your computer. − − You will first need to select the appropriate driver for the ethernet adapter connected to your local network, a shown in the screen below: − − [[Image:Select_local_enet_driver.png]] − − If you are using a PCI ethernet adapter that appears on our supported list, it is likely that your server will be able to detect your hardware automatically and you will simply be able to choose option 1, "Use xxxx (for chipset yyyy)", where 'xxxx' and 'yyyy' are specific to your hardware. If the software fails to detect it correctly, you can manually select the appropriate driver for your ethernet adapter from a list of drivers or from a list of ethernet adapter models. After the appropriate driver is selected, select "OK" and proceed to the next screen. − − =====Configuring Local Network Parameters===== − Your SME Server needs information about your local network in order to communicate with the other computers on your network. This includes the IP address and the subnet mask on your server's internal interface. Because your server acts as a gateway and firewall, these will differ from the IP address and subnet mask on the external interface. − − {{Warning box|If you configure your server in server-gateway mode make sure the IP address for the internal interface and the one for the external interface are in different ranges that do not overlap.}} − − If you plan to operate in server and gateway mode (explained in greater detail below), your server will act as a relay between your local network and the Internet. Because no computer on your local network, other than your server, directly interacts with the external world, the IP addresses assigned to those computers need only be unique with regards to your local network. (It doesn't matter if a computer on someone else's local network uses the same IP address, because the two machines will not be in direct contact.) As a result, we are able to use special "non-routable IP addresses" for your local network, including the internal interface of your server. − − [[Image:Select_local_network.png]] − − If you have no reason to prefer one set of IP addresses over another for your local network, your server will prompt you with default parameters that are probably appropriate in your situation. − − {{Tip box|If you are installing servers at multiple sites within your organization, you may find it useful for later troubleshooting to use different network addresses for each site. Additionally, if you ever want to establish an IPSEC VPN between the servers, each server will need to use a different range of IP addresses. Even if you are not planning to use a VPN right now, it would be safest to use unique network addresses for each location.}} − − If, however, you are operating your server in "server-only" mode and there are already servers on your network, you will need to obtain an unused IP address for your local network. − − Next, you will be prompted to enter the subnet mask for your local network. If you are adding your server to an existing network, you will need to use the subnet mask used by the local network. Otherwise, unless you have a specific need for some other setting, you can accept the default setting. − − ====Operation Mode==== − After configuring your SME Server for your local network, you will see the following screen. This is where you select your server's operation mode. − − [[Image:Select_operation_mode.png]] − − =====Option 1: Server and gateway mode===== − In server and gateway mode, your server provides services (such as e-mail, web services, file and print sharing) to your network and also acts as a gateway between your internal network and the outside world. The fact that it serves as a "gateway" means it has separate interfaces with each network, and provides security and routing. − − If you configure your server to operate in server and gateway mode, your server will require either: − 1. two ethernet adapters (one to communicate with the local network and the other to communicate with the external network/Internet) − 1. one ethernet adapter (for the local network) and a modem for a dialup connection − − With server and gateway mode, there are a number of extra parameters that will need to be configured. These will be discussed in the next section. − − =====Option 2: Private server and gateway===== − This mode is a variation of option 1 and provides the same functionality with the following differences: − * our web server is not visible to anyone outside of the local network. − * our mail server is not accessible from outside of the local network. − * Additional firewall rules have been configured to drop packets for various services (such as 'ping' requests). − − All services are available on the internal network. The differences are entirely in how your server is seen by the external world. − − You would select this mode only if you wish to use the server as a gateway, but do not wish to publish any services to the external Internet. − − =====Option 3: Server-only mode===== − Server-only mode is appropriate if you do not wish to use the gateway capabilities of your server. In this configuration, your server connects only to the local network and does not connect directly to the outside world (although it may connect indirectly through your firewall or another server). − − {{Warning box|Because the server "trusts" the local network to be secure in server-only mode, it must be behind a firewall of some type. Under no conditions should it be directly connected to the Internet.}} − − Your network will resemble the image below: − − [[Image:Network4.png]] − − If you have a connection to the Internet by way of another gateway or corporate firewall, you can configure your server to provide services (including e-mail, web services, file and print-sharing) to your network. In this instance, you do not need your server to provide the gateway role because that role is fulfilled by your firewall. If you select Option 3, " Server-only mode - protected network ", your server will provide your local network with web, e-mail, file and print-sharing. − − On the next configuration screen, you should enter the IP address for the Internet gateway on your local network. If you do not have an Internet connection, simply leave this configuration screen blank. − − ====Configuring Server and Gateway Mode==== − If you are configuring your server to operate in server and gateway mode, you must select one of two Internet connection types - a dedicated connection (such as ADSL or cable modem) or a dialup connection (in which case you will be connecting to your ISP via a modem). − − [[Image:Select_ext_access_mode.png]] − − The next step after selecting a connection type is to enter the specific parameters representing that connection. − − ====Server and Gateway Mode - Dedicated==== − How you configure your server's external interface depends on whether you are using a dedicated connection or a dialup connection. Therefore, if you configured your server for "server and gateway mode - dedicated connection" you will be presented with very different configuration screens than if you configured the server for "server and gateway - dialup connection" (as discussed in the next section). − − =====Configuring Your External Ethernet Adapter===== − As you did previously with your local ethernet adapter, you need to configure the driver for your external ethernet adapter. As before, the software will attempt to detect the card. If it correctly identifies the card, you can proceed using Option 1, "Keep current driver". If it does not, you will need to manually select the driver. − − [[Image:Select_ext_enet_driver.png]] − − =====Assigning Your Ethernet Adapters to Network Connection===== − To communicate successfully, your server needs to know which ethernet adapter connects it to the internal network and which adapter connects it to the external network/Internet. Your server will make this designation automatically - the first ethernet adapter (in position "eth0") will normally be assigned to the local, internal network and the second ethernet adapter (in position "eth1") will normally be assigned to the external network/Internet. In the event that this assumption is incorrect, this screen allows you to easily swap that designation. − − If you don't know which ethernet adapter is designated to eth0 and which is designated to eth1, we suggest you leave it in the default configuration while completing the rest of the screens. You will later have the opportunity to "Test Internet Access" from the server console. If your test fails at that time, return to this screen, swap the card assignment and retry the test. − − [[Image:Select_ethernet_card_assignment.png]] − − {{Tip box|If you are using two different network interface cards, you will see which driver is associated with eth0 and which is associated with eth1. This information can help you determine which card is eth0 and which is eth1. If you have two cards that use the identical driver you will see a screen such as the one above where the actual driver is not listed.}} − − =====Configuring Your External Interface===== − With a dedicated connection in server and gateway mode, you will be presented with the following screen: − − [[Image:Select_ext_interface_config.png]] − − Your server must know three additional things to communicate on the Internet: − * its own unique IP address so that Internet data packets can reach it. − * a subnet mask (also called a netmask) which looks like an IP address and allows other computers to infer your network address from your IP address. − * the IP address of the external gateway for your server. This is the IP address of the router on your server's external network. It identifies the computer that your server should contact in order to exchange information with the rest of the Internet. − − Normally, you would need to know this information and enter it into the server console. However, most ISPs are capable of automatically assigning these configuration parameters to your server using a DHCP server or PPPoE . − − If you have a static IP address and your ISP is configuring your server using DHCP or PPPoE, select Option 1, 2 or 3 depending upon how you will be connecting to your ISP. When you first connect to your ISP, your server will automatically be given its external interface configuration parameters. − − If your ISP is providing you with a dynamic IP address, the ISP will configure this through DHCP or PPPoE and your server will be re-configured automatically whenever your IP address changes. If you plan to use a Dynamic DNS service, select Option 2. Otherwise, select Option 1. − − There are some very good reasons to use a dynamic DNS service if you have a dynamically assigned IP address. It is a simple, affordable way to ensure continuity of service when your IP address changes. Please read the next section on dynamic DNS for more information about dynamic DNS. − − If you are using ADSL and need PPP over Ethernet, choose Option 3. You will then be asked for the user name and password you use to connect to your ISP. Note that some ISPs require you to enter their domain name as well as your user name. − − If you have a static IP address and your ISP does not offer DHCP or PPPoE, then your ISP will give you the static IP address, subnet mask (or netmask), and the gateway IP address of the device that your server should connect to in order to communicate with the Internet. Assuming you have this information on hand, you can go ahead and select Option 4. Successive screens will prompt you to enter each parameter. − − {{Tip box|What is PPPoE?<br /> − PPPoE is the Point-to-Point Protocol over Ethernet . Essentially, it is an implementation of the popular PPP protocol used for dialup connections - only configured to run over an Ethernet connection. Many ISPs that provide ADSL connections use PPPoE as the method of connecting their customers to the Internet over ADSL.}} − − =====Configuring Dynamic DNS===== − If you choose either of the DHCP options or PPPoE, you will be presented with an additional screen where you can choose which dynamic DNS service you wish to use. − − [[Image:Select_dyn_dns.png]] − − The server is pre-configured to operate with four dynamic DNS organizations: yi.org, dyndns.com, dyndns.org, and tzo.com. (You can elect to use a different service, but doing so would require some customization of the server.) Once the service is selected, the subsequent two screens will prompt you to enter your account name and the password for your account. (These two parameters would be given to you by the service. Note that the dynamic DNS service may place restrictions on which domain name you can use for your company.) Please read [[SME_Server:Documentation:Administration_Manual:Appendix#Appendix_B._Dynamic_DNS_Services|Appendix B]] on dynamic DNS for more information about whether a dynamic DNS is right for you. − − NB. the script for "dyndns.com - Commercial service" doesn't work, if you wish to use this service select custom and write your own script. − − ====Configuring the Server for Server and Gateway Mode - Dialup Access==== − If you select dialup access, successive screens will ask you for the following information: − * information regarding the modem or ISDN connection with your ISP, such as the serial port your modem is connected to *2 − * modem or ISDN initialization screen - most users can simply leave this blank, but with some particular modems or ISDN cards, additional information may need to be entered here − * the dialup access phone number − * username − * password − * connection policy − − This last item may be of special interest. As shown in the screen below, you can configure what type of policy you wish to have in place during typical work hours. If you are in a small office and wish to share your phone line between your computer and phone or fax, you may wish to minimize the time you are online. This is also true if your ISP charges a fee on a per-minute basis. On the other hand, if you have a separate phone line or unlimited time with your ISP, you might want to have long connection times or a continuous connection. − − {{Warning box|If you are using a dial-on-demand link to your ISP, please be aware that you can incur very steep phone charges due to dialup connection attempts to the ISP. We are aware of at least one case in which a failed modem link at the ISP resulted in several thousand connection attempts over a couple of days - and a hefty phone bill. If your telephone carrier charges you per-call or per-minute fees, we suggest that you contact your ISP and ask whether it is willing to assume responsibility if a failure at their end results in a large phone bill.}} − − After configuring this policy for "work" hours, you can then configure the policy for time outside of office hours and additionally for the weekend. Notice that you do have the choice of never, which would allow you to restrict your system from connecting on weekends or during off-hours. − − [[Image:Select_connect_policy.png]] − − The connection policy defines several choices including Short, Medium or Long. These specify how long the server should wait before disconnecting the dialup connection. If your office only shares a single phone line, the Short option minimizes the amount of connection time and frees up the phone line for later use. The down side to this is that if someone is reading a long page on the web site or steps away from their computer for a brief moment, when they want to then go to another web page, the server will probably have disconnected and will need to redial and connect. On the other hand, setting the Long connection time will result in users experiencing fewer delays while waiting for the server to reconnect. However, the phone line will used for a larger amount of time. − − There are two separate timeout values configured by each choice. One value is the length of time since the last HTTP (web) packet went through the server. The other is a more general timeout for any other types of packets. The difference is there because it is assumed that people reading a web page may take longer to go on to another web page, whereas users connecting to another service (such as ssh or POP3 to an external server) probably will be more active than someone using a web browser. The timeout values are shown in the table below. − − {| cellspacing="0" border="1" − |'''Choice''' − |'''HTTP Timeout''' − |'''Other Timeout''' − |- − |Short − |3 minutes − |30 seconds − |- − |Medium − |10 minutes − |5 minutes − |- − |Long − |20 minutes − |10 minutes − |} − − Note that there is also the option for a Continuous dial-up connection. Choosing this option is basically equivalent to creating a permanent or dedicated connection, but only doing so through the use of a dial-up connection and a modem or ISDN adapter. One example of this use might be to set a Continuous connection policy during work hours and then some variable policy during off-hours and the weekend. Assuming that your ISP is okay with this arrangement and you can afford to do so financially, these settings would give your users the fastest response time as the connection would always be online. − − [[#2]] Your modem documentation may indicate which serial port is used by the modem. You may also be able to visually identify which port your modem uses. − − ====Dialup phone numbers with # and * characters==== − − [[bugzilla:4592]] − − {{Warning box|When entering your dialup phone number the default allowable character set does not include # and/or *. If your country uses dialup phone numbers with # and/or * you will need to edit the following script}} − − nano /usr/lib/perl5/site_perl/esmith/console/configure.pm − − Section − ------------------------------------------------------------ − DIALUP_ACCESS_NUMBER: − ------------------------------------------------------------ − − Change line 1398 "if ($choice =~ /^[-,0-9]+$/)" − − To "if ($choice =~ /^[-,\#\*0-9]+$/)" − − Which allows '#' and '*' in the Dialup phone number − − save changes. − − ====Configuring Your DHCP Server==== − You now will be prompted regarding DHCP service. Your SME Server can be configured to provide DHCP service to your internal network. The DHCP server can automatically configure the other computers on your internal network with such parameters as non-routable IP address, subnet mask and gateway IP address. This reduces the risk of error and simplifies the process of configuring your network. − − We recommend configuring your server to use DHCP to configure all of your network clients. You should not do this if there is an existing DHCP server on your network as there should typically be only one DHCP server per network. − − [[Image:Select_dhcp_server_config.png]] − − =====Configuring the DHCP Address Range===== − Before the DHCP server is able to assign IP addresses to the computers on your network, you need to tell it what range of IP addresses it can safely distribute. As above, this section is pre-configured with defaults that are appropriate in most situations. If you have fewer than 180 machines on your local network and no reason to prefer one range of IP addresses over another, you can simply accept the defaults for these screens. Client IP Addresses are handed out at the high end of the range. − − − [[Category:SME Server]] [[Category:Administration]]
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