The SoftLayer_Network_Service_Vpn_Overrides data type contains information relating user ids to subnet ids when VPN access is manually configured. It is essentially an entry in a 'white list' of subnets a SoftLayer portal VPN user may access.
Use to manually decide which subnets within your virtual private address space a SoftLayer portal VPN user may access. Stores a 'white list' consisting of a collection of subnet ids matched up against user ids. This class will reject any subnets or users, that don't belong to the account holder. Note that simply assigning overrides to a user does not enforce the rule change. You must set the manual override flag for the VPN user in the SoftLayer_User_Customer class. It is recommended that before you create new VPN subnet overrides, you delete any old ones for a user, since the VPN authentication system limits the number of accessible subnets by a single user to sixty four. This holds true regardless of whether the VPN user accesses the network via SSL or PPTP. After making any changes to a user's VPN settings, you should call SoftLayer_User_Customer::updateVpnUser() on that customer object.