Strategies for Optimal Firewall Placement in Network Security

We are linking our company to the Internet, and we are discussing the placement of the firewall. I feel that the firewall should reside in-house for the best security; others want to put the firewall at our ISP and run . . . We are linking our company to the Internet, and we are discussing the placement of the firewall. I feel that the firewall should reside in-house for the best security; others want to put the firewall at our ISP and run a point-to-point T-1 between us. Although the risk is small, I think there is a risk of having an unprotected circuit between us and the firewall. Am I off-base?

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