That is a loaded question...it depends on what you mean by gateway. I proxy server can be a gateway so can a router. Typically, its gateway=router. check this chart out: http://www.geocities.com/SiliconValley/Monitor/3131/ne/osimodel.html I consider it on the Network layer. Let me know if this helps! Thanks, Eric Elliston President of Elliston Consulting http://www.ellistonconsulting.com
OSI modem stands for Open Systems Interconnect model. It has seven layers from physical to its application and all layers are capable for gateway functioning.
Dear,
Gateways can function at all levels of OSI model, Being both hardware and software they can work on each layer of OSI model.
rgds,
Niraj
At all layers
at all layers.
physical layer Layer 1
Layer 4 : The Transport Layer
Layer 7: The Application Layer
Data Link Layer
Gateways work on all seven OSI layers . The main job of a gateway is to convert protocols among communications networks.
Gateway
hub work at physical layer of osi model
Gateway network device
Application layer.
PGP works at the Layer 6 - Presentation level.
Layer 4 : The Transport Layer
Layer 7: The Application Layer
physical layer Layer 1
Data Link Layer
Gateways work on all seven OSI layers . The main job of a gateway is to convert protocols among communications networks.
It is sometimes recognized that a gateway may function across several or all layers of the OSI model.
application