Skip to Content
Mastering OpenVPN
book

Mastering OpenVPN

by Eric F Crist, Jan Just Keijser
August 2015
Intermediate to advanced
364 pages
7h 35m
English
Packt Publishing
Content preview from Mastering OpenVPN

Multiple CAs and CRLs

Easy-RSA 3.0 fairly easily supports multiple root CAs. By creating a separate CA directory under EASYRSA root, and having different vars files for each, each individual CA can be managed with Easy-RSA.

Currently, ssl-admin does not support multiple root CAs, but creation of intermediate CAs is supported.

With OpenVPN, a single server instance can support multiple root CAs, with client connections that have been signed by either CA being accepted. To enable such support, the CA certificate for each authorized CA needs to be concatenated together into a single file that can be called with the --ca OpenVPN option. The same can be done with the certificate revocation list.

Generally, it is not recommended to use multiple CA certificates ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.

Read now

Unlock full access

More than 5,000 organizations count on O’Reilly

AirBnbBlueOriginElectronic ArtsHomeDepotNasdaqRakutenTata Consultancy Services

QuotationMarkO’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.
Julian F.
Head of Cybersecurity
QuotationMarkI wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.
Addison B.
Field Engineer
QuotationMarkI’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.
Amir M.
Data Platform Tech Lead
QuotationMarkI'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Mark W.
Embedded Software Engineer

You might also like

Troubleshooting OpenVPN

Troubleshooting OpenVPN

Eric F Crist

Publisher Resources

ISBN: 9781783553136