2.3 - Advanced Networking Devices Flashcards
What is a multilayer switcher?
Basically a Hub, Switch AND router. Performs switching on layer 2 and routing on layer 3.
What is a wireless controller?
The wireless controller is capable of centralized control of all WAPs through a single interface. It allows you to add access points, manage and configure access points, and monitor activity on access points.
What is a load balancer? What does it do?
Load balancers are used in multiple server settings, where if one server should fail, the remaining servers will work through the balancer. It can also be configured to take the encryption work off of the servers to increase efficiency. They can also cache client requests so that servers aren’t hit with repeat requests from multiple clients. (What is 2+2?, etc.)
What are IDS and IPS?
Intrusion Detection Service. Monitors traffic and issues an alarm when an anomaly is detected. It cannot stop the anomaly.
Intrusion Prevention Service. Blocks malicious activity before it becomes a problem.
What is a proxy server?
A device placed between your private network/LAN and the internet. It caches all incoming requests and analyzes them for problems before passing them on to the local network.
What is a VPN concentrator?
A VPN concentrator works as a VPN server when multiple simultaneous VPN connections are in play (think big companies). It can assume the tasks of VPN client authentication, establishing VPN tunnels and managing the encryption used for VPN transmission, using IPsec or SSL.
What is an AAA/Radius server?
Authentication, Authorization, and Accounting. The method of controlling user access to resources and tracking their activity on an IP network. Remote Authentication Dail-in User service (RADIUS) uses a centralized server to enforce AAA. Often a dedicated server, but can run as software on a remote access server.
What is a UTM appliance?
Unified Threat Management. Represents the culmination of network security devices. Not necessarily a single device. Can be a router, switch, firewall, an IDS/IPS or gateway.
What is an NGFW/Layer 7 firewall?
Next Generation Firewall. Can examine packets up to OSI layer 7. Considered a component of a sound UTM system. AKA a content filter.
What is a VoIP gateway?
Converts analog VoIP signals to digital IP packets.
What is VoIP PBX?
A dedicated VoIP switch that handles all internal VoIP communications while handling the external VoIP traffic through the VoIP gateway.
