- New DHCP Server
- Edit DHCP Server Name
- Inherited Access
- Managing Groups/Hosts
- Editing Subclasses
- Defining DHCP Server Options
- Reconcile Scopes
- Reload Scope List
- Set User Name and Password
This section shows you how to perform specific actions in the Men & Mice Management Console associated with maintaining your DHCP servers, such as adding and deleting servers and setting DHCP server options. In order to use the DHCP functionality of the Men & Mice Suite you need to have a valid DHCP license key.
New DHCP Server
When adding a DHCP server, the system automatically changes existing IP Address ranges to scopes if it finds IP Address ranges that contain the same start and end address as a scope on the DHCP server being added.
You must be logged in as a user with privileges to administer DHCP in order to add a DHCP server.
- From the menu bar, select File, New, DHCP Server. The Add DHCP Server dialog box is shown.
- Server Name. Type either the DNS name or the IP Address of the DHCP server.
- Server address (optional). If desired, type the IPv4 or IPv6 address for the server. This is not required, but doing so allows the Management Console to connect to the server by IP Address instead of by name.
- Server Type. Click the drop-down list, and select the desired server type.
- Microsoft with Agent Installed connects to a Microsoft DHCP server that has a DHCP Server Controller installed. If you want to gather the lease history from the DHCP server, you must use this connection method.
- Microsoft Agent-Free connects to a Microsoft DHCP server that does not have a DHCP Server Controller installed. When using this connection method, it is not possible to gather the lease history from the DHCP server. For further information regarding this connection method, refer to DHCP Servers--Server Access on Remote Computers.
- ISC connects to an ISC DHCP server.
- Cisco connects to a Cisco Router that is running DHCP server software. For more information, see Adding a Cisco DHCP server.
- Kea connect to a ISC Kea DHCP server.
- Use proxy server. If you are adding a Microsoft or a Cisco DHCP server you can specify the location of the DHCP Server Controller by clicking the Use proxy server checkbox and entering the DNS name or IP Address of the machine running the DHCP Server controller. This option allows the system to connect to DHCP servers in different forests where a cross-forest trust does not exist. It also allows a non-Windows version of Men & Mice Central to manage Microsoft DHCP servers.
- Click OK. You are connected to the server. Once connected, the name of the newly added server displays under DHCP Servers in the Object Section. (You may need to click the plus (+) sign next to DHCP Servers to see it.)
Server Access on Remote Computers
To manage DHCP servers you must have the DHCP Server Controller installed. For the ISC DHCP server and the Kea DHCP server, a DHCP Server Controller must be installed on each DHCP server you want to manage.
If you plan to use Men & Mice Suite to manage any Microsoft DHCP servers, install the DHCP Server Controller on a Windows machine that is a member of the same domain or workgroup as the DHCP servers. You may install multiple copies of the DHCP Server Controller, for example if you want to manage Microsoft DHCP Servers that reside in different forests. A single DHCP Server Controller for Microsoft DHCP Servers can manage multiple DHCP servers. The DHCP Server Controller must adhere to whatever restrictions and security standards are set forth in Microsoft Windows.
To configure the DHCP Server Controller to access DHCP servers on remote computers, do the following:
- Before you can administer DHCP servers, verify that the DHCP Controller is running as a Windows User and has the necessary privileges.
- To enable DHCP Management in the Men & Mice Suite, start the Windows Services program and open the properties dialog box for Men & Mice DHCP Server Controller.
- Click the Log On tab. The Local System account radio button is most likely selected.
- Click the This account radio button and enter the name and password of a Windows User that is a member of either the Administrators role or the DHCP Administrators role.
- Close the dialog box and restart the Men & Mice DHCP Server Controller service.
Edit DHCP Server Name
This feature allows you to change the name or IP Address used to connect to a DHCP server. This is useful if you need to refer to the server by another name or if you are connecting to the server by an IP Address and the IP Address has changed. You can also use this feature to change the connection method for MS DHCP servers.
To access this feature, do the following:
- Locate the applicable server.
- Right-click and, from the shortcut menu, select Edit Server Name. The Edit Server name dialog box displays.
- Change the Server name, Server address (optional), and Server Type. If applicable, you can select Use proxy server and enter the relevant information.
- Click OK.
You can manage access to scopes just as you can for other object types in the Men & Mice Suite, but there is one important distinction: you can set Inherited Access for scopes.
When you open the Access dialog box for a scope, the dialog box has an extra section for inherited access:
- Checking the Inherit Access checkbox will have the selected scope inherit all access bits from its parent range. This means that whenever the access privileges for the parent range are changed, they will be applied to the scope as well.
- Clicking the Apply access inheritance in child ranges button will enable access inheritance for all descendants of the scope. This means that whenever the access privileges in the scope are changed, the changes will be applied of all descendants of the scope.
Regarding other access settings, refer to Administration Functions—Global Access.
NOTE: For information on removing a DHCP server on a Men & Mice Appliance, refer to Appliance Management.
To remove a DHCP server, do the following:
- In the Object Section of the Management Console, click on DHCP Servers.
- In the Object List, right-click on the DHCP Server you want to remove.
- From the shortcut menu, select Delete.
- In the confirmation dialog box, click Yes.
Applies to ISC DHCP Servers only. Allows you to manage groups and hosts within groups on an ISC DHCP server. You can also manage host entries that are defined in the global scope.
To manage groups and hosts, do the following:
- Select the ISC DHCP server for which you want to manage groups and/or hosts.
- Right-click on the server and, from the shortcut menu, select Manage Groups and Hosts. A new menu displays in the menu bar and the DHCP Groups dialog box displays.
The toolbar that displays in the Groups for DHCP Server contains the following:
Displays the Add Group dialog box. Enter the name for the new group, and click Add.
Displays the Edit Group dialog box. Make the desired changes to the name for the selected group, and click Save.
When selected, displays a confirmation message asking if you want to delete the selected group.
When selected, displays the DHCP Group Options dialog box. Refer to DHCP Servers—Options for details on this dialog box.
When selected, displays the Access Control dialog box. Refer to Administration Functions—Global Access for details on this dialog box.
Displays the Add Reservation dialog box. Enter the applicable information, and click OK.
Displays the Edit Reservation dialog box. Make the desired and click OK.
When selected, displays a confirmation message asking if you want to delete the selected reservation.
When selected, displays the Reservation Options dialog. Refer to DHCP Servers—Options for details on this dialog box.
Groups/Hosts Shortcut Menu
- Edit. Displays the Edit Host dialog box. Make the desired changes to the name for the selected group, and click Save.
- Add. Displays the Add Host dialog box. Enter the applicable information, and click Add.
- Delete. When selected, displays a confirmation message asking if you want to delete the selected host.
- Options. When selected, displays the Host Options dialog. Refer to DHCP Servers—Options for details on this dialog box.
- Copy. Copies information about the selected host into the clipboard.
- Select All. Selects all groups/hosts. You can then right-click and use the shortcut menu options to manage all the selected items.
Applies to ISC DHCP Servers only. Allows you to edit subclasses on an ISC DHCP server.
To edit subclasses, do the following:
- Select the ISC DHCP server for which you want to edit subclasses.
- Right-click on the server and, from the shortcut menu, select Edit Subclasses. The DHCP class dialog box displays.
- Choose a class to edit and click the Select button. A new dialog box displays where you can enter the client identifiers or MAC addresses of the hosts that should belong to the selected class.
The dialog box contains a multi-line edit field where you can quickly add multiple entries. NOTE: When entering MAC addresses you must use a colon as a separator. Each line in the dialog box should contain one entry. To delete an entry, simply remove the corresponding line in the dialog box.
- Click OK to confirm your changes and close the dialog box.
The ISC DHCP, Kea DHCP, Cisco and MS DHCP servers offer different types of options: the MS DHCP server allows the user to choose between different option types (Standard, Microsoft Options and Microsoft Windows 2000 options). This drop-down list is only displayed if there are non-standard options defined on the ISC DHCP server.
You can set options for multiple servers by selecting all of the servers for which you want to set options. When setting options for multiple servers all of the servers must be of the same type.
- In the Object List, right-click on the applicable DHCP Server and, from the shortcut menu, select Options. The DHCP Server Options window displays.
- In the selection field in the upper left corner, click the drop-down list to select which options you want to display. Based upon your selection, the dialog box changes.
- To Show only options with non-default values, click this checkbox. The Quick Filter field supports the following keywords: name, value, and option. For example, if you want to quickly find option 51, you could enter the following: option51.
- To add a value to an option, locate the option item, and click the plus sign at the end of the field. A blank field displays into which you can enter the applicable information. If you enter multiple fields for an option, they are numbered consecutively (e.g., Time Server as two fields.)
- If applicable, use the scroll bar along the right-hand side of the page to move up/down the option list.
- When all selections/entries are made, click OK to save your changes.
Defining DHCP Server Options
You can define your own options on ISC and MS DHCP servers.
Defining Options on MS DHCP Servers
In the Object List, right-click on the applicable DHCP Server and, from the shortcut menu, select Define Options. The DHCP Server Option definition dialog box displays. The dialog box shows all options defined on the DHCP server.
- Use the Vendor class drop-down list to select the vendor class for which you want to define options.
- To Add an option, click the button with the plus sign at the end of the option list. Enter the ID, name and type of data to use for the option. The IP Address and Integer data types can be specified as arrays. To specify an array, click the Array checkbox.
- To Delete an option, click the button with the minus sign next to the option you want to delete.
Click OK to save the option definition.
Defining Options on ISC DHCP Servers
- In the Object List, right-click on the applicable DHCP Server and, from the shortcut menu, select Define Options. The DHCP Server Option definition dialog box displays. The dialog box shows all custom options defined on the DHCP server. The standard ISC DHCP options will reside in the Standard Vendor class. Other custom class that have been added will be available in the Vendor class drop down field.
- To Add an option, click the button with the plus sign at the end of the option list. Enter the ID, name and type of data to use for the option. The several data types can be specified as arrays and the Array checkbox is enabled when a supported data type is selected. To specify an array, click the Array checkbox.
- To Delete an option, click the button with the minus sign next to the option you want to delete.
To change the ID for an option, enter the new ID in the ID field.
- Click OK to save the option definition.
- From the Object list, expand the DHCP Servers list.
- Right-click on the server for which you want to manage properties and, from the shortcut menu, select Properties. The Properties dialog box for the selected server displays. Refer to the applicable section based upon the server type: MS, ISC DHCP, Kea DHCP or Cisco.
MS Server Properties
- Complete the General tab using the guidelines below.
- Conflict detection attempts. Specifies the number of conflict detection attempts you want the DHCP server to make before it leases an address to a client.
- Audit log file path. Specifies the location of the DHCP server audit log files.
- Database path. Specifies the location of the DHCP server database.
- Backup path. Specifies the location for the database backup.
- Click the DNS tab, and complete the fields according to the guidelines below:
- Enable DNS dynamic updates according to the settings below. Specifies whether the DHCP server sends DNS dynamic record updates to the DNS server. Updates are sent to DNS servers configured in TCP/IP client properties for any active network connections at the DHCP server.
- Dynamically update DNS A and PTR records. Specifies that the DHCP server update forward and reverse lookups are based on the type of request made by the client during the lease process.
- Always dynamically update DNS A and PTR records. Specifies that the DHCP server update forward and reverse DNS lookups when a client acquires a lease, regardless of the type of request used to acquire it.
- Discard A and PTR records when lease is deleted. Specifies whether the DHCP server discards forward DNS lookups for clients when a lease expires.
- Dynamically update DNS A and PTR records for DHCP clients. Specifies whether the DHCP server sends dynamic updates to the DNS server for DHCP clients that do not support performing these updates. If selected, clients running earlier versions of Windows are updated by the DHCP server for both their host (A) and pointer (PTR) resource records.
- When all selections/entries are made, click OK.
ISC Server Properties
- Authoritative. Specifies whether the server is authoritative to determine if a DHCP request from a client is valid
- DDNS Domain Name. Specifies the DNS domain name to use to store the A record for a DHCP client.
- DDNS Reverse Domain Name. Specifies the DNS reverse domain name to use to store the PTR record for a DHCP client.
- DDNS Update Style. Specifies how the DHCP server does DNS updates. The available styles are:
- None. Dynamic DNS updates are not performed
Ad-hoc. This update scheme is depreciated
- Interim. This is the recommended scheme for dynamic DNS updates
- DDNS Updates. Specifies whether to perform DNS updates. This setting has no effect unless DNS updates are enabled globally with the DDNS Update Style setting.
- DDNS TTL. Specifies (in seconds) the TTL value to use when performing a DNS update.
- Default Lease Time. Specifies (in seconds) the default lease time to use for DHCP leases.
- Log Facility. Specifies which syslog facility to use when logging DHCP server messages. All possible facilities are listed; however, not all of these facilities are available on all system.
- Max/Min Lease Time. Specifies (in seconds) the maximum/minimum lease time to use for DHCP leases.
- Get Lease Hostnames. Specifies whether the DHCP server should perform a reverse DNS lookup for each address assigned to a client and send the result to the client in the hostname option.
- One Lease per Client. Specifies whether the DHCP server should free any existing leases held by a client when the client requests a new lease.
- Ping Check. Specifies whether the DHCP server should send an ICMP echo message to probe an IP Address before offering it to a DHCP client.
- Ping Timeout. Specifies for how many seconds the DHCP server should wait for an ICMP echo response when Ping Check is active.
- Filename. Specifies the name of the initial boot file to be used by a client.
- Server Name. Specifies the name of the server from which the client should load its boot file.
- Next Server. Specifies the host address of the server from which the initial boot file (that is specified by Filename) is to be loaded.
Advanced ISC DHCP Server Properties
DHCP Administrators can access the ISC DHCP server configuration files directly to edit DHCP server properties that are not available in the GUI.
To access the advanced options, do the following:
- Log in to Men & Mice as the DHCP administrator.
- Select an ISC DHCP server, right-click and select Properties from the shortcut menu.
- When the Properties dialog displays, click the Advanced button.
When the Advanced Options dialog box displays, you can edit the properties for the server in a text document. If the DHCP server contains multiple configuration files, each file displays in a separate tab.
- Click OK. The contents of the files are verified for correctness. If an error is found during verification, an error message displays and the changes are not saved.
Kea DHCP Server Properties
- Interfaces. Specifies the interfaces the server listens on. An asterix ( * ) specifies that the server should listen on all interfaces.
- DHCP Socket Type. Specifies the type of sockets used. Available options are raw and UDP.
- Valid Lifetime. Specifies the time after which a lease will expire if not renewed.
- Renew Timer. Specifies the time when a client will begin a renewal procedure.
- Rebind Timer. Specifies the time when a client will begin a rebind procedure.
- Match Client ID. Specifies if the server should ignore the client identifier during lease lookups and allocations for a particular subnet.
- Echo Client ID. Specifies if the server should send back client-id options when responding to clients.
- LFC Interval. Specifies the interval in seconds, at which the server will perform a lease file cleanup (LFC)
- Lease Database Type. Specifies the lease database. Only the memfile option is supported.
- Lease Database File. A full path to the lease database file.
- Persist Lease Database. Specifies whether the new leases and updates to existing leases are written to the file.
- Decline Probation Period. Specifies a probation time that will be set on addresses that are in use by some unknown entity.
- Next Server. Specifies the server address to use when clients want to obtain configuration from a TFTP server.
- Control Socket.
- Control Socket Name. The path to the UNIX socket.
- Loggers. Click 'Add' to add a new logger. The following dialog is displayed
Cisco Server Properties
- Hostname. Specifies the name of the Cisco router. Refer to Cisco IOS IP Addressing Command Reference document for more information.
- Domain Name. Specifies the default domain name that the Cisco IOS software uses to complete unqualified host names. Refer to Cisco IOS IP Addressing Command Reference document for more information.
- Name Server. Specifies the address of a name server to use for name and address resolution. Refer to Cisco IOS IP Addressing Command Reference document for more information.
Applies to MS DHCP Servers only. Use this function to fix inconsistencies between information in the registry and the DHCP database.
- In the Object List, select DHCP Servers and then select an MS DHCP server.
- Right-click the server, and select Reconcile Scopes.
- Choose the action to perform: Verify (only) or Fix (any inconsistencies).
- Click OK to complete the action.
Reload Scope List
Reloads the list of scopes to view additions and/or deletions made by another user.
Applies to ISC DHCP and Kea DHCP Servers only. This menu item is only displayed when a user with DHCP administration privileges is logged in. This command restarts the DHCP server.
Set User Name and Password
This menu item is only displayed when a user with DHCP administration privileges is logged in. This command updates the user name and password that should be used to access the Cisco DHCP server. Use this command if the user name or password on the Cisco DHCP server has changed.