The limitations on PIX firewalls are usually based on the number of connections you think will go though it. In preparation for purchasing a PIX, how can you estimate the possible number of connections based on the number of users you know will be going through the PIX? I know this will vary based on the business and how they use their network but can anyone recommend an approach?
Also, can you depend on the connection limits advertised for each PIX? For example, at 125,000 connections it seems to me that the PIX 515 could support an extremely large network. Will the 515 still perform well when it approaches this ceiling?