13.3 Summary
In this chapter, we explored Sun's Remote Procedure Call interface,
the fundamental building block on which both Sun's
Network Information System (NIS) and Sun's Network
Filesystem (NFS) are based. RPC is ubiquitous, yet many of its users
do not understand the security implications that are inherent in its
operation.
If you run NFS or NIS, then you are running RPC. Be sure that the
version you are running is up to date, properly installed, and secure
against external attack. And if you are running Secure RPC, you
should investigate transitioning to newer products that are more
widely used and subject to greater security auditing.
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