Satcomm (Pvt.) Ltd. was established many years ago. It's strictly connected with Metro Area Network in Karachi & Lahore. They deliver services mainly across Pakistan. Satcomm has now about 60 Km of 36-core Metro CORE Optical Fiber Backbone network in Karachi & over 25Km of 36-core Optical Fiber Backbone network in Lahore, which became an operational on Telco-grade Optical Transport Equipment.
VPN is a dedicated network for students, workers and down-loaders. It's constructed by using public Internet to access to a private network, i.e. a company's internal network. There are many systems that enable you to create networks via the Internet. As specialists say: 'These systems use encryption and other security mechanisms to ensure that only authorized users can access the network and that the data cannot be intercepted.'