O LEVEL- INTERNET TECHNOLOGY & WEB DESIGN

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 O LEVEL-PAPER 2nd -- M2-R4 :


INTERNET TECHNOLOGY & WEB DESIGN




THESE ARE THE QUESTIONS WHICH FREQUENTLY ASKED IN 

  LAST 10 YEARS -----



Differences Between Firewall and Proxy Server




BASIS FOR COMPARISON
FIREWALL
PROXY SERVER
Basic
Monitors and filters the incoming and outgoing traffic in a local network.
Establishes the communication between the external client and the server.
Filters
IP packets
Client-side requests for the connection.
Generated overhead
More
Less
Involves
Network and Transport layer data.
Application layer data.






Key Differences Between Firewall and Proxy Server



1.   The Firewall is used to block the traffic which can cause some damage to the system, it acts as a barrier for the incoming and outgoing traffic in the public network. On the other hand, the proxy server is a component of a firewall which enables communication between the client and the server if the client is legitimate user and it acts as client and server at the same time.
2.   Firewall filters the IP packets. In contrast, the proxy server filters the requests it receives on the basis of its application level content.
3.   The overhead generated in firewall is more as compared to a proxy server because the proxy server uses caching and handles fewer aspects.
4.   The firewall uses the network and transport layer data while in proxy server processing the application layer data is also used.


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