Protection of the network against unauthorised accessWith the transition of most of important company data to electronic form, gaining access by an unauthorized person to a computer network can pose a potential security threat to companies. For this reason, it is necessary to protect against unauthorised access. Protection against unauthorised access does not mean protecting physical access to active networking elements or computer cabling, but mainly adopting measures to prevent connecting a laptop, a wireless access point or a network analyser to the network at any point. By controlling network access, it is possible to precisely specify in the individual networking devices a group of devices or users who can connect via the respective device. Other devices/users will then not be allowed into the network by temporarily or permanently blocking the physical port through which they attempted to connect to the network without authorization.
NetworkLogin 802.1xSecuring a computer network with NetworkLogin 802.1x allows active networking devices to securely authenticate a user with a user name and password and provide access to network resources only upon successful authentication. In this case, the active networking device can be a switch, an access server, a wireless access point (AP). The authentication authority is not the active networking device itself, but a central user database with which the networking device communicates as a client. The database is referred to as RADIUS (Remote Authentication Dial In User Service – RFC 2865). A RADIUS server can be operated as a service integrated in Microsoft Active Directory. During the authentication process, the station (referred to as the Supplicant in the 802.1x terminology) connects to a port secured by 802.1x. It notifies the switch of its existence by sending any packet, for example an IP address assignment request. Subsequently, the switch does not forward the received DHCP request further and it sends a request for identification back to the station instead. The station responds by sending its user name and password. The switch encrypts the received information and sends it to the authentication authority. The RADIUS server processes the received information and sends user confirmation or rejection back to the switch. Based on this information, the switch grants or denies the station access to the secured network.
GAMA and BYOD
BYOD, standing for “Bring Your Own Device”, is a popular trend where employees are allowed to bring their own smart devices (such as laptops, smart phones, tablets) to the corporate environment. This, of course, increases the pressure on IT security. BYOD makes IT security more challenging as it introduces conflicting requirements for security, employee productivity and convenient use.
GAMA BYODOur own solution is GAMA BYOD. To add a new BYOD device, the user just enters the device name and unique access credentials are generated automatically. After that, the device can be connected to an SSID with forced 802.1x authentication and, when logging in for the first time, the device will automatically ask for access credentials. Access credentials are automatically reserved for a specific device after the first login.
- A user with access rights can grant network access to his/her own devices or to guests via a web browser.
- The users generate a unique name and password for their devices.
- When the device is connected to the SSID, it will automatically ask for the generated name and password.
- 802.1x authentication is enforced by the SSID, being a standard that all devices easily support.
- The encryption key for communication between the AP and client devices is generated dynamically by the 802.1x protocol.
- Users can assign access to their devices, but also to the devices of their guests. These, of course, are connected to a separate VLAN.
- The solution supports Android, BlackBerry, iPhone and Windows mobile platforms.
- Controlling employee access to WLAN
- Account management
- Integrated Radius Server
- LDAP user authentication, e.g. Active Directory
- MAC address authentication
- Collaboration with devices supporting RADIUS and 802.1x
- Portal authentication
- High availability (cluster support)
- Support for BYOD policy for employees.
- Managed network access for employee devices.
- SYSLOG containing related security events.
- High availability (cluster support)
GAMA – Guest Access ManagerGAMA is a robust and secure system for managing guest access to a wireless network with simple user interface. The system runs on Linux, which runs as a virtual machine in VMWare.
GAMA Guest Access ManagerA user with access rights can grant guest access to the network. The system controls can be accessed via any web browser and they can be integrated into the customer’s website. The guest is connected to a WiFi network and is dynamically assigned an IP address. After launching a web browser and attempting to access any web page, the browser is automatically redirected to the wireless switch’s internal web page for authentication.
CLEAR PASSA solution for networks that need a gatekeeper function capturing information about anyone who connects to the network including from which device. It securely manages network access and enforces security policies on other interconnected networking elements based on context sharing, automatic discovery and profiling of users, their devices, including IoT fingerprinting.