If you're hosting a website or other services in-house, it's trivial to watch your network for attack attempts and mitigate as needed. However, for those who use shared hosting, intrusion detection is limited.
Is it possible to build an IDS, through which public traffic can pass for analysis?
I'm proposing some ideas and will be showing a demonstration for a cloud IDS using open source tools to watch over your low-cost ethereal servers. With this, you can hopefully see all the things attackers are attempting, much like you would if you had full control of your publicly accessible server.