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Various end-user device operating systems impose different requirements on the contents of the server certificate that is being presented. Luckily, these requirements are not mutually exclusive. When creating or procuring a server certificate, you should check with the CA that its certificates satisfy as many of these requirements as possible to ensure broad compatibility with your users' devices. The list below does not include "standard" sanity checks applied to certificates; e.g. well-formedness of the data, validity timestamps etc. These checks are done "as per usual" in every TLS connection. The following properties are non-standard and are of particular interest in the eduroam context:
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