Terminal Identification

Context

With the development of Internet, many enterprises allow employees to wirelessly access the enterprise intranet using their own intelligent devices such as cellphones, tablets, and laptops, which satisfies employees' pursuit of new technology and desire of being unique, and improves their efficiency as well. This is called Bring Your Own Device (BYOD). However, access to enterprise intranet through PCs may cause potential security risks, and traditional security technology based on user identity authentication and authorization can no longer guarantee network security. It is in such a background that the terminal type identification technology comes out. With this technology, the types of the devices that employees use to access the intranet can be identified, facilitating access control. During the implementation of BYOD, administrators can limit intranet access rights to specified types of mobile devices and perform authentication and authorization based on users, device types, access time, access points, and environment information about the devices.

A terminal type identification profile is configured with terminal types that can be identified by devices, and identification rules. With the configured identification rules, the types of devices using which employees access the intranet can be identified, helping administrators to control employees' access rights.

Procedure

Create a terminal identification profile.

Create a preset terminal identification profile.
1. Choose Configuration > Security Services > Terminal Identification. The terminal identification page is displayed.
2. Select Use the preset profile and click Apply to complete the configuration.
  
  To use the user agent and DHCP Option rules for identification, enable user agent and DHCP Option.

Create a user-defined terminal identification profile.

Choose Configuration > Security Services > Terminal Identification. The terminal identification page is displayed

Click Create. The page for creating a terminal identification profile is displayed.

Table 1 describes parameters on the page.

**Table 1** Creating a terminal identification profile
Item	Description
Profile name	Indicates the name of the new terminal identification profile, which cannot be modified.
Terminal Type	Indicates the terminal type ID. This parameter cannot be modified in the preset profile.
Enable config	Enables or disables terminal type identification. NOTE: The prerequisite for enabling the terminal type identification function is that the terminal type ID has been configured.

Click Create in Rule Configuration List. The page for creating a rule is displayed.

Table 2 describes parameters on the page.

**Table 2** Creating a rule
Item	Description
Rule No. (ID)	Indicates the ID of an identification rule. This parameter cannot be modified.
Matching object	Indicates the rule for identifying a terminal type, including the MAC address, user agent, and DHCP option. MAC: Match the first 12 bits of a terminal's MAC address, which is known as the Organizationally Unique Identifier (OUI), to identify the corresponding manufacturer. User Agent: Use the User Agent information carried in HTTP packets from a terminal to identify the operating system and its version, the CPU type, browser type, and browser version. DHCP option: Use the manufacturer information carried in Option12, Option55, and Option60 in DHCP packets from a terminal to identify the terminal's host name and manufacturer type.
MAC Address	Indicates the MAC address that a terminal must match. This parameter is supported only when Matching object is set to MAC.
MAC Address Mask Type	Indicates the mask or mask length of a terminal's MAC address. This parameter is supported only when Matching object is set to MAC.
UA information to be matched	Specifies the User Agent information that a terminal must match. This parameter is supported only when Matching object is set to User Agent.
DHCP option	Indicates the DHCP option that a terminal must match. This parameter is supported only when Matching object is set to DHCP option.
Option to be matched	Indicates partial match. The User Agent or Option information detected by the AC must be the same as or contain the value of option-text or user-agent-text. This parameter is supported only when Matching object is set to DHCP option.
Matching character string format	Indicates the Option information that a terminal must match as an ASCII or hexadecimal string. This parameter is supported only when Matching object is set to DHCP option.
Matching mode	Indicates exact match or partial match. Exact: The User Agent or Option information detected by the AC must be the same as the value of option-text or user-agent-text. Partial: The User Agent or Option information detected by the AC must be the same as or contain the value of option-text or user-agent-text. This parameter is supported only when Matching object is set to User Agent or DHCP option.

Set the parameters.
In Rule No. (ID), select --, and or or to configure the matching mode for terminal type identification.

Click and to change the matching order of rules.
Click OK.

Modify a terminal identification profile.
1. Choose Configuration > Security Services > Terminal Identification. The terminal identification page is displayed.
2. Click the name of the terminal identification profile to be modified. The page for modifying the terminal profile is displayed. Table 1 and Table 2 describe parameters on the page.
3. Modify the parameters.
4. Click OK.
Restore a preset terminal identification profile.
1. Choose Configuration > Security Services > Terminal Identification. The terminal identification page is displayed.
2. Click Recover preset next to the preset terminal identification profile to be restored. The modified preset terminal identification profile is restored to the default configuration.
Delete a terminal identification profile.
1. Choose Configuration > Security Services > Terminal Identification. The terminal identification page is displayed.
2. Select the terminal identification profile to be deleted, and click Delete.
3. Click OK.