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+title: Your corporate VPN does not work anymore
+---
+pub_date: 2019-12-16
+---
+author: ungleich network team
+---
+twitter_handle: ungleich
+---
+_hidden: no
+---
+_discoverable: yes
+---
+abstract:
+It's a hard truth, but that's how it is. You need to act now.!
+---
+body:
+
+Your company has given you a VPN to securely connect to your company
+network. Now you can access resources of your company network
+securely. Great, isn't it?
+
+Besides it doesn't work anymore. Traditional corporate VPNs are
+dead. Literally.
+
+## Dead? Why?
+
+There is a single problem with corporate VPNs: they try to use IPv4.
+And if you are in an IPv6 only network, your corporate VPN stops to
+work.
+
+## IPv6 only networks - who has that?
+
+Turns out that
+[RIPE ran out of IPv4
+space](https://www.ripe.net/publications/news/about-ripe-ncc-and-ripe/the-ripe-ncc-has-run-out-of-ipv4-addresses).
+a couple of weeks ago. This practically means that companies cannot
+get new IPv4 addresses anymore. Modern companies have already switched
+to IPv6 only networks and mobile networks are converted to IPv6 only
+everywhere in the world.
+
+Basically, everyone is moving towards IPv6 only networks.
+Running dual stack networks is significantly more complexity, so the
+tendency is to skip this step and go IPv6 only directly.
+
+So in short:
+
+* IPv4 ran out
+* Networks are already switching to IPv6
+* Dual stack networks (both IPv4 and IPv6) is too complex
+* IPv6 only is the new default
+* Your corporate VPN does not work in IPv6 only enviroments
+
+## Can't things just stay as they are?
+
+Unfortunately not. The main problem is that your VPN is intended to be
+used while you are out of the office. The cost for acquiring or
+running IPv4 networks is growing on a daily basis. So while your
+company might be able to buy expensive IPv4 addresses, the network
+that you travel to, might not be able to afford IPv4 space anymore.
+
+
+## ... but I need the corporate VPN
+
+There are two easy ways to get the corporate VPN back working:
+
+* update the corporate VPN to support IPv6
+* switch to an Open Source alternative that fully supports IPv6
+
+## Help!
+
+If your local network group does not know how adopt either of the two
+technologies, feel free to send a mail to **support -at-
+ungleich.ch**, we can support you in finding a solution.
+
+Or if you want to talk to like minded people, we invite you to join
+the [IPv6.Chat](https://IPv6.chat), where many people are successfully
+migrated to IPv6.