In an effort to stop Spam / DoS's for all servers we have been implementing new Firewall / LFD / php.ini rules to all servers. One is server #3 on this list. There should be no noticeable difference to any one on the server however as always please let us know via ticket if you see any issues.
As we get the security scheme more solidified I will be posting the configs so that everyone can see what is / is not allowed. If for someone reason you would like to see them now just drop us a ticket, however please remember that these can change as we tweak em to get the most security and keep the most customers happy