the reasoning for wanting to use the subdomain as a CNAME to web is because we are doing web hosting using amazon ec2 and we need to be able to change the load balancer (web) ip address if need be. Therefore we need to update each A record, instead of just changing web's A record. The problem...
I'm fairly new at setting up complex DNS setups, but this seems like the sort of thing most ISP's would have to configure at some point.
We have a web application, foo.com. Each account in the system has subdomain.foo.com where they can access their application. In addition, they have the...
if you are using linux, you could use iptables and add a filter to the prerouting table that rewrites incoming packets on an IP to a specific internal port number
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