Remote Servers - Managed Servers page

This page displays a list of remote servers currently managed by FusionLayer NameSurfer.

Currently supported server types

FusionLayer DHCP servers
Managed DHCP servers
Microsoft DHCP servers
Standalone DHCP servers
FusionLayer DNS servers
Legacy bindconf DNS servers
Managed BIND servers
Managed Unbound servers
Managed NSD servers
Managed Secure64 DNS Authorities
Managed Secure64 DNS Signers
Managed Secure64 DNS Caches
Standalone BIND servers

You can select or disable the refresh rate for the server list from the menu located at the top right corner of the page.

You can sort list information by clicking on the header titles.

The server list contains the following information and functions:

Name: the server's hostname or IP address. By clicking on the server name a new page will open where you can view the server's overview, details, statistics, traffic statistics, zones/hosts (depending on the server type) and views.
Type: server type, currently supported server types are listed above.
Description: free text description on the server (not mandatory).
Version: server version information, if available.
Status: current server status, for example "running", "stopped", "server unreachable", "server doesn't support remote calls" etc. For server types that support uptime information, last startup time or running period will be shown when the mouse cursor is moved over the server status field, if the server is running. For server types that support error log display, an icon for viewing the log file data will be shown in status field when the server is in stopped state.
Command: contains command buttons for starting, stopping and restarting the server
Checkbox: by ticking a checkbox and then clicking the "Remove Server(s)" button the respective server is removed from FusionLayer NameSurfer database. You can select several servers at once - or all of them by ticking the checkbox located at the server list header - and perform the remove function for all of them as well.

Filtering the server list

You can filter the remote server list with the filter function located at the top of the page. Input server name pattern and, optionally, choose a server type. After clicking the "Filter" button, the server list displays only the remote servers matching your filtering conditions. Clicking the "Refresh" button reloads the server list with currently set search conditions.

Adding a new server

Select a server type from a pulldown list and click the Add Server button. After this you are directed to a page where the first step is to input the server's FQDN hostname or it's IP address. When a hostname is used, you must make sure that it resolves to a correct IP address.

The next step is to input necessary server details. The contents vary according to the server type.
The help texts alongside the inpput fields and selectable options provide you information on what kind of data to use.

Please note: when attempting to connect a FusionLayer DHCP Server or FusionLayer DNS with NameSurfer, the NameSurfer integration key available from the respective FusionLayer DHCP Server must be input here.

Please note: the operating mode cannot be changed after the server has been created. If you wish to use a similar server with different IP version, you must create a new server for that purpose.
If the server already existd in the FusionLayer NameSurfer database, you will be notified on it.
After inputing the necessary data, click the "OK" button, and the server will appear on the list.

Viewing / Editing a server

Please note: depending on the remote server version, the available options may differ.

After clicking the server's name you will be directed to a page which displays the following sections divided by tabs:

Overview
- Status: indicates whether the server is running, stopped, unable to answer etc.
- Version: displays the server version information, if available.
- Uptime: displays the server uptime.
- Logged in users: displays a list of currently logged in users.
- Failover status: displays the failover status.
- Network interfaces : Displays a list of interfaces in remote server and their statuses
  Please note: the System Statistics subsection contains data only if the respective remote server is running SNMP and the Details subsection's SNMP Community contains a value used for fetching the data.

Settings
- Contains the information input when adding the server. Modifiable data.

Options
The options statement sets up global options to be used by BIND. This statement may appear only once in a configuration file. If more than one occurrence is found, the first occurrence determines the actual options used, and a warning will be generated. If there is no options statement, an options block with each option set to its default will be used.

Most common options are related to global allow-query, allow-recursion and allow-transfer. Normally used options are also directory and pid-file but in SNS these are automatically maintained by the system.

Custom configuration part gives the administrator more flexibility to include configuration into standard DNS Configuration, the ability to create setups otherwise impossible to create using FusionLayer DNS.

The part of the configuration managed here will not be shown anywhere else in the UI, including Zone lists, Global Options etc.

The custom configuration can contain any global statements and/or options supported by ISC BIND. The user needs to make sure that the rest of the configuration is compatible with the custom configuration and options.

The resulting configuration is however checked with named-checkconf tool for valid syntax, and edits will not be saved if the check fails. If the main configuration file does not pass the check either, previous configuration will be restored. If none of the previous configurations pass either, a default one will be used (empty configuration). Any configuration restore operations performed will be informed of in the top part of the page.

Leases (available only for DHCP Servers)
The leases subsection contains a list of leases currently managed by the server.

The leases page contains a filter function at the top, which can be used to narrow down the amount of leases currently displayed.

The filtering uses AND function, i.e. all filtering inputs used stack one after another.

You can filter leases by their subnet, IP address, hardware address and state information.

You can sort list information by clicking on the header titles.

The leases list displays the following information:
- IP Address: the ip address designated for a lease.
- MAC Address: the hardware (MAC) address used by a lease.
- Start: the lease starting time.
- End: the lease ending time.
- State: the lease state, whether it is active or not.
- UID: The uid statement records the client identifier used by the client to acquire the lease. Clients are not required to send client identifiers, and this statement only appears if the client did in fact send one. Client identifiers are normally an ARP type (1 for ethernet) followed by the MAC address.
- Circuit ID: The option agent.circuit-id and option agent.remote-id statements are used to record the circuit ID and remote ID options send by the relay agent, if the relay agent uses the relay agent information option. This allows these options to be used consistently in conditional evaluations even when the client is contacting the server directly rather than through its relay agent. These are also called as "option 82" values".
- Remote ID: The option agent.circuit-id and option agent.remote-id statements are used to record the circuit ID and remote ID options send by the relay agent, if the relay agent uses the relay agent information option. This allows these options to be used consistently in conditional evaluations even when the client is contacting the server directly rather than through its relay agent. These are also called as "option 82" values".
- Hostname: Most DHCP clients will send their hostname in the host-name option. If a client sends its hostname in this way, the hostname is recorded on the lease with a client-hostname statement. This is not required by the protocol, however, so many specialized DHCP clients do not send a host-name option.

Subnets (available only for DHCP Servers)
The subnets subsection contains a list of subnets currently managed by the server.

You can search the subnets with the search function located at the top of the page. Input subnet name pattern and click the "Search" button, after which the subnet list displays only the subnets matching your search conditions. Clicking the "Refresh" button reloads the subnet list with currently set search conditions.

You can add new subnets by clicking the "Add" button located at the bottom of the subnet list.

You can remove subnets by ticking on the checkboxes at the "Select" column and clicking on the "Delete" button located at the bottom of the subnet list.

You can sort list information by clicking on the header titles.

The subnet list displays the following information:
- Name: the subnet's IP address prefix. Also acts as a link which opens up a dialogue window for editing a subnet.
- Netmask: the subnet's netmask.
- Description: subnet's free text description.
- Select: contains a checkbox for removing a subnet by ticking on it and clicking on the "Delete" button.
Adding a subnet

After clicking the "Add" button a dialogue window opens which contains the necessary data inputs for a new subnet.

The icons with question marks alongside the input fields and selections provide necessary information on the required data.

After inputing the required data, click the "Save changes" button in order to add a new subnet to the list.

Editing a subnet

After clicking the subnet's IP address prefix a dialogue window opens which contains the existing subnet data.

The icons with question marks alongside the input fields and selections provide necessary information on the required data.

After inputing the required data, click the "Save changes" button in order to apply the changes to a subnet.

Hosts (available only for DHCP Servers)
The hosts subsection contains a list of hosts currently managed by the server.

You can search the hosts with the search function located at the top of the page. Input a search pattern, select the search target and click the "Search" button, after which the host list displays only the hosts matching your search conditions. Clicking the "Refresh" button reloads the host list with currently set search conditions.

You can add new hosts by clicking the "Add" button located at the bottom of the host list.

You can remove hosts by ticking on the checkboxes at the "Select" column and clicking on the "Delete" button located at the bottom of the host list.

You can sort list information by clicking on the header titles.

The host list displays the following information:
- Name: the host's name. Also acts as a link which opens up a dialogue window for editing a host.
- Hardware address: the hardware (MAC) address used by a host.
- IP address: the IP address used by a host
- Description: host's free text description.
- Select: contains a checkbox for removing a host by ticking on it and clicking on the "Delete" button.
Adding a host
After clicking the "Add" button a dialogue window opens which contains the necessary data inputs for a new host.

The icons with question marks alongside the input fields and selections provide necessary information on the required data.

After inputing the required data, click the "Save changes" button in order to add a new host to the list.

Editing a host

After clicking the host's name a dialogue window opens which contains the existing host data.

The icons with question marks alongside the input fields and selections provide necessary information on the required data.

After inputing the required data, click the "Save changes" button in order to apply the changes to a host.

DHCP Statistics
The statistics subsection for DHCP servers displays graphs for New leases and renewals (leases/second) and Total pool allocation (percentage) during a selected time period. By hovering mouse over different graph areas, you'll receive more detailed information on it's contents.

You can select different time periods between 1 hour and 10 years, and refresh the graph by clicking the "Update" button.

You can export graph data as CSV by clicking the "Export" button, selecting the graph you wish to export, and clicking the "Export as CSV" button.

The "Reset" graph resets all DHCP statistics data from a server.
Please note: this operation cannot be undone.

DNS Statistics
The statistics subsection for DNS servers displays graphs for Query rate (queries/second), Distribution of queries (queries/second), Average response time (percentage of queries) and DNSSEC validations (queries/second) during a selected time period. By hovering mouse over different graph areas, you'll receive more detailed information on it's contents.

You can select different time periods between 1 hour and 10 years, and refresh the graph by clicking the "Update" button.

You can export graph data as CSV by clicking the "Export" button, selecting the graph you wish to export, and clicking the "Export as CSV" button.

The "Reset" graph resets all DNS statistics data from a server.
Please note: this operation cannot be undone.

DNS Report (available only for FusionLayer DNS servers)
The traffic statistics subsection displays alphanumerical data on Top DNS request sources, Top DNS requests by query type, and Top record requests.

You can start the statistics collection in FusionLayer DNS server by going to the page DNS / DNS Statistics / Traffic statistics and clicking the Service status button if it indicates that the service is stopped.

Subnet Statistics (available only for FusionLayer DHCP Servers)
The Subnet statistics subsection displays graphs Per subnet allocation (percentage) during a selected time period. By hovering mouse over different graph areas, you'll receive more detailed information on it's contents.

Please note: in order to view the statistics, you must first choose them from the available subnet list by clicking the "Select subnets" button. This opens up a dialogue window which displays the available subnets on the left section. You can select subnets from that list, and move them to the right section - which lists the subnets displayed in the graph - with the icon labeled with arrow pointing to the right. You can also remove the subnets displayed in the graph by selecting them from the right section and clicking the icon labeled with arrow pointing to the left. The statistics can be viewed from a limited number of servers at a time, the system warns you if the number of selected servers exceeds this limit.

You can select different time periods between 12 hours and 10 years, and refresh the graph by clicking the "Update" button.

You can export graph data as CSV by clicking the "Export" button, selecting the graph you wish to export, and clicking the "Export as CSV" button.

The "Reset" graph resets all subnet statistics data from a server.
Please note: this operation cannot be undone.

System Statistics
The System statistics subsection displays two graphs: The first one displaying the CPU load averages for one minute, five minutes and fifteen minutes. The second graph displays both the total and available disk space on the remote server. By hovering mouse over different graph areas, you'll receive more detailed information on it's contents.

You can select different time periods between 12 hours and 10 years, and refresh the graph by clicking the "Update" button.

You can export graph data as CSV by clicking the "Export" button, selecting the graph you wish to export, and clicking the "Export as CSV" button.

The "Reset" graph resets all system statistics data from a server.
Please note: this operation cannot be undone.

Please note: the System Statistics subsection contains data only if the respective remote server is running SNMP and the Details subsection's SNMP Community contains a value used for fetching the data.

The function uses the following MIBs to collect data:

Disk Space:
- UCD-SNMP-MIB::dskTotal.1 (OID .1.3.6.1.4.1.2021.9.1.6.1)
- UCD-SNMP-MIB::dskAvail.1 (OID .1.3.6.1.4.1.2021.9.1.7.1)
- UCD-SNMP-MIB::dskPercent.1 (OID .1.3.6.1.4.1.2021.9.1.9.1)
CPU load:
- UCD-SNMP-MIB::laLoadInt (OID .1.3.6.1.4.1.2021.10.1.5.[123] for 1/5/15 minute load averages multiplied by 100)

Access Lists (available only for FusionLayer DNS servers)
The Access Lists subsection reads all Access Control Lists from the named.conf file and lists them in the UI. List only shows the names of ACLs, their values can be seen in their editing page.

By clicking on an ecisting ACL's name, an Edit ACL page opens, which allows you to edit ACL name, add, change and remove values inside ACL. Checkbox in front of every value represents negation of that value, in ACL every value can be negated. ACL name can consist of characters and numbers

You can add new ACLs by clicking the Add button. The request will be placed into SNS's queue and it will be typically processed within 15 seconds.

The acl statement assigns a symbolic name to an address match list. It gets its name from a primary use of address match lists: Access Control Lists (ACLs). Note that an address match list's name must be defined with acl before it can be used elsewhere; no forward references are allowed.

The following ACLs are built-in:
- any
  Matches all hosts.
- none
  Matches no hosts.
- localhost
  Matches the IPv4 and IPv6 addresses of all network interfaces on the system.
- localnets
  Matches any host on an IPv4 or IPv6 network for which the system has an interface. Some systems do not provide a way to determine the prefix lengths of local IPv6 addresses. In such a case, localnets only matches the local IPv6 addresses, just like localhost.

Zones (available only for FusionLayer DNS servers)
The zones subsection contains a list of zones currently managed by the server.

You can search the zones with the search function located at the top of the page. Input a search pattern and click the "Search" button, after which the zone list displays only the zones matching your search conditions. Clicking the "Refresh" button reloads the zone list with currently set search conditions.

You can add new zones by clicking the "Add" button located at the bottom of the zone list. The request will be placed into SNS's queue and it will be typically processed within 15 seconds.

You can remove zones by ticking on the checkboxes at the "Select" column and clicking on the "Delete" button located at the bottom of the zone list.

You can sort list information by clicking on the header titles.

The zone list displays the following information:
- Name: the zone's name. Also acts as a link which opens up a dialogue window for editing a zone.
- Type: zone type, either a master or a slave.
- Master IP address: IP address and the port of the master DNS server.
- Last update: the date and time for the last zone update.
- View: the view the zone is located in.
- Select: contains a checkbox for removing a zone by ticking on it and clicking on the "Delete" button.
Adding a zone
After clicking the "Add" button a dialogue window opens which contains the necessary data inputs for a new zone.

The icons with question marks alongside the input fields and selections provide necessary information on the required data.

After inputing the required data, click the "Save changes" button in order to add a new zone to the list.

Editing a zone

After clicking the zone's name a dialogue window opens which contains the existing zone data.

The icons with question marks alongside the input fields and selections provide necessary information on the required data.

After inputing the required data, click the "Save changes" button in order to apply the changes to a zone.

Views (available only for FusionLayer DNS servers)
The views subsection contains a list of views currently managed by the server.

You can search the views with the search function located at the top of the page. Input a search pattern and click the "Search" button, after which the view list displays only the views matching your search conditions. Clicking the "Refresh" button reloads the view list with currently set search conditions.

You can add new view by clicking the "Add" button located at the bottom of the view list.

You can remove views by ticking on the checkboxes at the "Select" column and clicking on the "Delete" button located at the bottom of the view list.

You can sort list information by clicking on the header titles.

The view list displays the following information:
- Order: the order (priority) of the view. View order specifies the order in which the views are processed.
- Name: view's name, alphanumeric characters are recommended, whitespace is not allowed.
- Default: indicates if this is a view used as a default.
- Select: contains a checkbox for removing a view by ticking on it and clicking on the "Delete" button.
Adding a view
After clicking the "Add" button a dialogue window opens which contains the necessary data inputs for a new view.

The icons with question marks alongside the input fields and selections provide necessary information on the required data.

After inputing the required data, click the "Save changes" button in order to add a new view to the list. The view add request will be placed into SNS's queue and it will be typically processed within 15 seconds.

Editing a view

After clicking the view's name a dialogue window opens which contains the existing view data.

The icons with question marks alongside the input fields and selections provide necessary information on the required data.

After inputing the required data, click the "Save changes" button in order to apply the changes to a view.

Viewing / editing a localhost server

Localhost servers use the legacy user interface, which has the following navigation options available:

The localhost page displays the server's currently used options and declarations (for example zones).

Compare Server Configurations function

This function is used to compare configuration data of managed DNS and/or DHCP server configuration files.

Please see Remote Server configuration comparison page for more information.