Though strictly speaking, all that is needed for web conferencing are computers with the proper set ups and internet connections, there are Web Conferencing Services available that allow one to make use of more web conferencing features that may be useful for a wide variety of applications. Firewalls, Secure Socket Layer Encryption, and many, many other benefits and features are available when one makes use of web conferencing services. A simple internet search will reveal all the other advantages and benefits one can get from availing of these very important web services.