What I have in mind and used is a commercial gateway/firewall with an web-interface for configuration that has this specifications:
Administration Network Monitoring and logging Authentication Firewall IPS and iDS VPN server Multiple internet gateways Bandwidth management Public dns Application firewall SSL-VPN webportal High availability Content scanning: web traffic Content scanning: mail traffic Statistics
But the software comes only at cost embedded on their devices.
What I found as a free alternative on internet is ZeroShell but is still beta and might not have some features needed. Is there an established distribution of linux or other free *nix that can provide the network services needed in a company and provide also a web interface for some of the configuration, logs etc much like the above mentioned aXsGUARD?
One mandatory feature, needed in most of the companies, is Multiple Internet Gateways. If there is not available this kind of distribution with Web interface, what would be the next best free solution in the sense of having both an interface and the shell just for advanced users.