i am going to be setting our cisco 1841 router using ip sla to failover form one isp to another in the event the primary goes down. that part should be straight forward, the part that im having a hard time with is how to keep the webserver getting inbound connections. once the public ip switches hwo is the world going to know the web server is now at that address. i heard dynamic dns could accomplish this i am just not sure how. can someone enlighten me?