Mobile computing, which enables real-time remote access to corporate n
etworks from a notebook computer, is now being spotlighted as notebook
computers become smaller and more complex, and ISDN, wireless network
s, and cellular phones become more popular. Unlike conventional networ
ks, many problems encountered when constructing mobile computing envir
onments affect mobile computing users and network administrators. This
paper discusses these problems and introduces three communications so
ftware products to help users overcome them.