In what cases would it be considered OK to use open-source firewalls to protect/secure/filter a company network?
There seems to be many open source firewall alternatives (pfSense, smoothwall, m0n0wall) for a small business, that will save the company money by lowering the initial cost.
Best Answer
First your question sounds like "commercial softwares are better, but how bad is it if I go to open source". Anyway I don't think that there's any major issue for using open source firewall as long as :
1/ it matches your needs
2/ you update them on a regular basis
3/ you know what you're doing and how to configure it