What type of firewall is linux. I want to use it to set up a dmz zone. Is it a stateful inspection or what. Also do you have any info on setting up dmz zones in linux. I'm using redhat 8.0.

Any systems exposed to the internet is a risk. The systems could be comprimised and then your bandwidth taken up completely. Even a cheap Linksys firewall would be enough (although it may actually ...