Glossary
GL-19
User Guide for Cisco Secure Access Control System 5.3
OL-24201-01

X

X.509 A standard for public key infrastructure. X.509 specifies, amongst other things, standard formats for
public key certificates and a certification path validation algorithm.
XML (eXtensible
Markup Language)
XML is a flexible way to create common information formats and share both the format and the data
on the World Wide Web, intranets, and elsewhere.