Firewalls can be found in hardware and software configuration. Some free versions include IPTables and NetFilter;...
commercial products include PIX and Checkpoint. So there are really lots of choices. If you go with an open sourced Linux product, keep in mind that you will still have to invest some time to get the firewall configured and tuned.
Related Q&A from Michael Gregg
Enterprise security expert, Michael Gregg answers a question regarding port 3389 issues when a user tries to open port 3389 RDP on their router to ...continue reading
Expert Michael Gregg answers a reader question about Snort and the interfaces it uses.continue reading
Security expert Michael Gregg discusses the disadvantages to a layered approach to enterprise security.continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.