Is there a way that you can have multiple firewalls between the Internet and your servers? Right now, we only employ one sonicwall, and I want to beef up our security at work. We don't really have much that needs to get in and out of the network, except email and web browsing traffic primarily (so most of our network storage access is done within the network).
I've obviously taken the steps to inform employees about good computing habits and we have a strict password policy.
Any ideas or suggestions? Are there any other good hardware and/or software firewall products we can use to add to make the system more secure and beef up our security between our network and the Internet?