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How LANeye works - Automatically naming devices.

Automatically naming devices - LANeye name network devices in several ways. Identification of devices are important to track computers and other network devices. There are several ways of detecting a device name and other information to identify a device.


MAC-address - The MAC-address identifies a device hardware address. MAC-addresses are sent out from all network devices on an Ethernet Network.


Vendor name by OUI - Vendors and manufactures of network equipment are registered at IEEE (Institute of Electrical and Electronics Engineers) and have a unique OUI (Organizationally Unique Identifiers). In a MAC-address the OUI is an integrated part of the MAC-address most significant bytes and due to that a network device vendor can be identified by the device MAC-address. The IEEE Registration Authority was formed in 1986 to register Organizationally Unique Identifiers (OUI) and vendors acquire their OUI from The IEEE.


Windows Name Resolver - In Microsoft Windows there is a built in function to resolve a computer name from an IP-address. This name resolver uses several resolving scheme to correctly name a device. However there is a general problem resolving a device name from its IP-address. There may only be one IP-address that corresponds to a specific name but one IP-address may have many name mapped to the same IP-address. On a network running windows servers, have DHCP activated and also runs WINS this reverse name lookup results in an "old" name. When LANeye runs on such a network LANeye may report an incorrect name in the network name field due to this.


DHCP Client Name - During a DHCP negotiation (requesting a dynamic IP-address) client computers will identify them self with a DHCP Client Name. LANeye will detect and store these names.


DHCP FQDN - During a DHCP negotiation (requesting a dynamic IP-address) client computers will identify them self with a FQDN (fully qualifying domain name). LANeye will detect and store FQDNs.


NetBIOS Name - During logon to the network computers will send out their NetBIOS name. LANeye will detect and store NetBIOS names.


The name LANeye shows for every device will be updated automatically upon when new names are detected. MAC-addresses and OUI vendor information will be detected immediately. Network name will be acquired within a short moment. DHCP and NetBIOS name will be detected later when computers and other network devices renegotiate IP-addresses and logon to the network.


LANeye will automatically update the caption name and use an intelligent way to decide what name to be shown. The following list shows the priority LANeye uses to decide what name to be shown.

  1. NetBIOS Name
  2. DHCP FQDN (Fully qualifying Domain Name)
  3. DHCP Client Name
  4. Network Name resolved by Windows
  5. Previously stored Network Name resolved by Windows
  6. OUI vendor name
  7. MAC-address

Prevent automatic naming - To prevent LANeye from changing and updating the caption name for a device you may enter a name of your choice in the caption field. Be sure to remove the preceding double backslashes ("\\") and do not use a question sign ("?") when manually naming devices since LANeye uses these to mark that a device caption name shall be automatically updated.




Read more on this topic

2.   HOW LANeye WORKS - Automatically naming devices

LANeye automatically name computers and network devices found.

Description of the naming scheme LANeye using.

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3.   HOW LANeye WORKS - Suspicious logon detection

LANeye automatically detects unusual logon behavior.

Computers that behaves strange will be blocked.

4.   HOW LANeye WORKS - Unknown computers on black list

LANeye automatically puts new unknown computers on black list.

Black listed computers automatically gets blocked.

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