Subdomains and security with regards to root domain?
I'm looking to create a subdomain (ie: sub.domain.com) and have it hosted on a different server from domain.com, using A record. Apart from load balancing, it's also a security move, since there are some untested PHP scripts on the subdomain. My question is, will such a set up create a complete seperation between the main domain and subdomain as far as security? For exampke, if the subdomain is compromised in whatever manner (ie: via the PHP script, PHP sessions etc), it can't possibly affect the root domain right?
Thanks,
