Chapter 21 - Firewalls


Explain how load-balancing works in relation to firewalls and why it would be considered at a large company.


Load-balancing is when there are multiple firewalls that are all configured the same way and incoming packets are divided between them so that the time that it takes to process the packets is reduced. There is a load-balancer between the internet and the firewalls that keeps track of which firewall has the fewest number of packets waiting to go through it and then sends the next packet to that firewall. The main reason a large company would want to use a load-balancer is to speed up the time that it takes for packets to enter the company network. If all the packets for the organization went through the same firewall then it could get backlogged but with a load-balancer is in place the packets can be divided between firewalls to speed up the process.
Topic revision: r2 - 2013-12-18 - JimSkon
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