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Write a 2- to 3-page paper (excluding the title page and reference page), and do the following:

1. Using one search engine (e.g., Google, Yahoo), search for “software firewalls.” Examine at least five commercial firewall software packages available and compare their functionality, cost, features, and type of protection. Create a weighted ranking according to your own evaluation of the features and specifications of each software package.

2. Discuss the difference between digital signatures and digital certificates