NETWORK SECURITY
FIREWALLS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Layer 3
|
|
|
Layer 5
|
|
|
Layer 7
|
|
|
Layer 2
|
Detailed explanation-1: -Packet-filtering firewalls operate at the network layer (Layer 3) of the OSI model. Packet-filtering firewalls make processing decisions based on network addresses, ports, or protocols.
Detailed explanation-2: -In the basic form, packet filters operate at Layer 3 (Network) of the Open Systems Interconnect (OSI) model. This provides network access control based upon information contained in the packet.
Detailed explanation-3: -Stateless Firewall (Static Packet Filtering) A stateless firewall is the most basic kind-it’s basically a packet filter that operates on OSI layers 3 and 4. This is the most basic type of network perimeter firewall.
Detailed explanation-4: -Application layer firewalls (also called proxy firewalls or application gateways) operate at Layers 3, 4, 5, and 7 of the OSI model.
Detailed explanation-5: -A packet filtering firewall operates At the Transport Layer and At the Network Layer OSI layer. Network layer or packet filters. These type of firewalls operate at Layer 3 and Layer 4 of the OSI model, which are the Network and Transport layers, respectively. More items