Proxy vs. Firewall
I understand that very simply put a proxy is a sort of 'man in the middle' allowing/denying access to certain services/resources. Strictly in terms of security (I mean here privacy, parental control and the like excluded), can it offer any added security compared to a firewall?
Interesting question. I've never associated the two before, but if you look at the definition of 'proxy', meaning something that performs an action on your behalf, then that would mean a firewall, in many cases, is a proxy. Having never really worked with Proxies myself, I've always just associated them as a way around firewalls. I look forward to some of the answer you'll get.
Yes, a proxy can provide extra security.
Proof by example:
- A web proxy could implement malware scanning. It could prevent you from visiting blacklisted sites (i.e. known to be malicious to browsers).
- You're on an untrusted network but need http access without being subjected to MITM attacks. Make the http connection through an authenticated, encrypted connection to your trusted web proxy.