OpenVPN Cookbook - Second Edition by Unknown

Author:Unknown
Language: eng
Format: mobi, epub
Publisher: Packt Publishing

Script security and logging

One of the major differences between OpenVPN 2.0 and later versions is related to the security when running scripts. With OpenVPN 2.0, all scripts were executed using a system call and the entire set of server environment variables was passed to each script. Starting with OpenVPN 2.1, the script-security configuration directive is introduced and the default for executing scripts is now the execv call, which is more secure. Also, it is advisable to log output of your scripts for security reasons. With script logging output, including timestamps, it becomes much easier to track down problems and possible security incidents. Starting with OpenVPN 2.3, it is no longer possible to add the system option to the script-security configuration directive.

In this recipe, we will focus on the different options for the script-security configuration directive and on the methods to ease the logging of script output.

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