it may be network layer or transport layer.. it depends on the design of the firewall.. also depends on the requirement specification..
layer 1, or the physical layer
A firewall generally works at layer 3 and 4 of the OSI model. Layer 3 is the Network Layer where IP works and Layer 4 is the Transport Layer, where TCP and UDP function. Many firewalls today have advanced up the OSI layers and can even understand Layer 7 - the Application Layer.
Data link layer
Hubs and repeaters operate at the Physical Layer of the OSI Model. The Physical Layer is the first layer of the OSI Model.
i believe (not quite sure) that it is at the application layer (layer 1)
Application layer.
A web browser is best associated with the application layer of the OSI Model.
layer 1, or the physical layer
layer 3 , network layer .
DHCP runs at the application layer of the OSI model.
A firewall generally works at layer 3 and 4 of the OSI model. Layer 3 is the Network Layer where IP works and Layer 4 is the Transport Layer, where TCP and UDP function. Many firewalls today have advanced up the OSI layers and can even understand Layer 7 - the Application Layer.
Network Layer
A firewall generally works at layer 3 and 4 of the OSI model. Layer 3 is the Network Layer where IP works and Layer 4 is the Transport Layer, where TCP and UDP function. Many firewalls today have advanced up the OSI layers and can even understand Layer 7 - the Application Layer.
Data link layer of the OSI model..
False.
OSI stands for Open system interconnection model. Application layer is the seventh layer in OSI model.
Data link layer