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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.
What else can I help you with?
Which osi layer is associated with firewall?
it may be network layer or transport layer.. it depends on the design of the firewall.. also depends on the requirement specification..
What layer does HTTP work?
The Hyper Text Transfer Protocol (HTTP) works on Layer 7 on the Application layer of the OSI Model.
What is the difference between firewall and access list?
Firewalls control all incoming and outgoing connections and if it's required block it or limit. Firewalls work with software, but not with accounts. Access lists control permissions and read-write rights for users (accounts) with certain username and password (if required).
Switch work in which layer of osi modle?
layer 3 layer 3 Switch/ Bridges / Hubs works at layer 2 as they utilizes MAC address to communicate. However i aggree above stated answer as there are some layer three switches that work at Layer3 i.e. Network Layer. Dhruv
Which layer of the OSI model that the telnet protocol is operating at?
TELNET operates at Application Layer in TCP/IP Model. It's an Application to establish a connection to TCP Port Number 23, where a Telnet server application (telnetd) is listening.
If a firewall does nothing more than filter packets at what layer of the OSI model does it operate?
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.
How is an application layer gateway different from a firewall?
a) How is an application-layer gateway (ALG) different from a firewall?
Which osi layer is associated with firewall?
it may be network layer or transport layer.. it depends on the design of the firewall.. also depends on the requirement specification..
Which Firewall for PC Windows 7 ia also monitoring the Application layer?
The default Windows Firewall also monitors the Application layer
Which devices work in the presentation layer?
firewall, router,layer 3 switches and i approve that answer ! NO! In general the firewall is a layer 4 device, it traffics filter incoming and outgoing ports. It uses the function of TCP and UCP. However a Firewall can also be a layer 3 device as in internal firewall in a router. Also a switch is a layer 2 device unless your talking about a Router switch.
What type of firewall works on the Session layer that creates a connection and allows packets to flow between the two hosts without further checking?
circuit-level gateway
What is the difference between static packet filter firewall operation and stateful firewall operation?
Stateful firewall checks more than just the ACK flag;it inspects the sequence numbers to ensure the correct state of the TCP session.
If a firewall does nothing more than filter packets, at what layer of the OSI model does it operate?
Network Layer
In which layer voip works?
transport layer
WiMax works on which layer?
physical layer
A tcp works at which layer?
fourth layer
Can hub work on data link layer?
No. Hub works only on first layer. On second layer only swithc/bridge works on second layer of OSI model.
