Firewall architectures-screening router, Computer Networking

Screening Router


In this setup network router acts as a firewall. It checks all incoming and outgoing packets according to the predefined rules. This filter is placed at the connecting point to the external network. Clients on local network and on the Internet are allowed to communicate directly but their communication is restricted to the type allowed by the router. As router is needed for connecting to the Internet so this firewall is almost free .


 Advantages


•    Cheapest, simple and transparent
•    Router could be replaced with some intelligent system to provide better access control


 Disadvantages


•    Requires complex filtering rules and hence error-prone
•    Fine grained access control is near impossible
•    Cannot add authentication system
•    If router is compromised somehow then security is at risk

Posted Date: 9/13/2012 5:44:48 AM | Location : United States







Related Discussions:- Firewall architectures-screening router, Assignment Help, Ask Question on Firewall architectures-screening router, Get Answer, Expert's Help, Firewall architectures-screening router Discussions

Write discussion on Firewall architectures-screening router
Your posts are moderated
Related Questions
Message passing is probably the most extensively used parallel programming paradigm today. It is the mainly natural, portable and efficient approach for distributed memory systems.

a)  Peer-to-Peer Network Computers can act as both servers sharing resources and as clients using the resources. b)  Server-based Network Give centralized control of netwo

Question : (a) List down and explain the different signal propagation behaviours that radio waves exhibit. (b) Explain the term Delay Spread with reference to signal propaga

MPMM is a Project Management Methodology which gives a complete "framework" for managing projects. This framework gives you with a step-by-step walkthrough of the phases, activitie

What is WDM? WDM is conceptually the similar as FDM, except that the multiplexing and demultiplexing includes light signals transmitted by fiber optics channel.

Connectionless Multiplexing  and De multiplexing Java program running in a host can create a UDP socket  with the  line Datagram's socket my socket =  new datagram's socket

how to remove runtime error..

Explain Client/Server Networking Model. A networking model where one or more powerful  computers (servers) give the dissimilar network services and all other user's computers (

Geo stationary satellite The satellite which is known as earth-orbiting satellite is called geo stationary satellite. The geo stationary satellite is placed directly over the e

If the number of incoming clients invokes exceeds the number of processes in a server class, the TP Monitor might be dynamically start new ones and this is known as Load balancing.