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4
articles/miragevpn-ncp.md
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@ -16,7 +16,7 @@ author:
## Updating MirageVPN ## Updating MirageVPN
As announced [earlier this month](https://blog.robur.coop/articles/miragevpn.html), we've been working hard over the last months on MirageVPN (initially developed in 2019, targeting OpenVPN™ 2.4.7, now 2.6.6). We managed to receive funding from [NGI Assure](https://www.assure.ngi.eu/) call (via [NLnet](https://nlnet.nl)). We've made over 250 commits with more than 10k lines added, and 18k lines removed. We closed nearly all old issues, and opened 100 fresh ones, of which we already closed more than half of them. :D As announced [earlier this month](miragevpn.html), we've been working hard over the last months on MirageVPN (initially developed in 2019, targeting OpenVPN™ 2.4.7, now 2.6.6). We managed to receive funding from [NGI Assure](https://www.assure.ngi.eu/) call (via [NLnet](https://nlnet.nl)). We've made over 250 commits with more than 10k lines added, and 18k lines removed. We closed nearly all old issues, and opened 100 fresh ones, of which we already closed more than half of them. :D
### Actual bugs fixed (that were leading to non-working MirageVPN applications) ### Actual bugs fixed (that were leading to non-working MirageVPN applications)
@ -29,7 +29,7 @@ To avoid any future breakage while revising the code (cleaning it up, extending
### New features: AEAD ciphers, supporting more configuration primitives ### New features: AEAD ciphers, supporting more configuration primitives
We added various configuration primitives, amongst them configuratble tls ciphersuites, minimal and maximal tls version to use, [tls-crypt-v2](https://blog.robur.coop/articles/miragevpn.html), verify-x509-name, cipher, remote-random, ... We added various configuration primitives, amongst them configuratble tls ciphersuites, minimal and maximal tls version to use, [tls-crypt-v2](miragevpn.html), verify-x509-name, cipher, remote-random, ...
From a cryptographic point of view, we are now supporting more [authentication hashes](https://github.com/robur-coop/miragevpn/pull/108) via the configuration directive `auth`, namely the SHA2 family - previously, only SHA1 was supported, [AEAD ciphers](https://github.com/robur-coop/miragevpn/pull/125) (AES-128-GCM, AES-256-GCM, CHACHA20-POLY1305) - previously only AES-256-CBC was supported. From a cryptographic point of view, we are now supporting more [authentication hashes](https://github.com/robur-coop/miragevpn/pull/108) via the configuration directive `auth`, namely the SHA2 family - previously, only SHA1 was supported, [AEAD ciphers](https://github.com/robur-coop/miragevpn/pull/125) (AES-128-GCM, AES-256-GCM, CHACHA20-POLY1305) - previously only AES-256-CBC was supported.

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articles/miragevpn-performance.md
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@ -21,7 +21,7 @@ coauthors:
link: https://reyn.ir/ link: https://reyn.ir/
--- ---
As we were busy continuing to work on [MirageVPN](https://github.com/robur-coop/miragevpn), we got in touch with [eduVPN](https://eduvpn.org), who are interested about deploying MirageVPN. We got example configuration from their side, and [fixed](https://github.com/robur-coop/miragevpn/pull/201) [some](https://github.com/robur-coop/miragevpn/pull/168) [issues](https://github.com/robur-coop/miragevpn/pull/202), and also implemented [tls-crypt](https://github.com/robur-coop/miragevpn/pull/169) - which was straightforward since we earlier spend time to implement [tls-crypt-v2](https://blog.robur.coop/articles/miragevpn.html). As we were busy continuing to work on [MirageVPN](https://github.com/robur-coop/miragevpn), we got in touch with [eduVPN](https://eduvpn.org), who are interested about deploying MirageVPN. We got example configuration from their side, and [fixed](https://github.com/robur-coop/miragevpn/pull/201) [some](https://github.com/robur-coop/miragevpn/pull/168) [issues](https://github.com/robur-coop/miragevpn/pull/202), and also implemented [tls-crypt](https://github.com/robur-coop/miragevpn/pull/169) - which was straightforward since we earlier spend time to implement [tls-crypt-v2](miragevpn.html).
In January, they gave MirageVPN another try, and [measured the performance](https://github.com/robur-coop/miragevpn/issues/206) -- which was very poor -- MirageVPN (run as a Unix binary) provided a bandwith of 9.3Mb/s, while OpenVPN provided a bandwidth of 360Mb/s (using a VPN tunnel over TCP). In January, they gave MirageVPN another try, and [measured the performance](https://github.com/robur-coop/miragevpn/issues/206) -- which was very poor -- MirageVPN (run as a Unix binary) provided a bandwith of 9.3Mb/s, while OpenVPN provided a bandwidth of 360Mb/s (using a VPN tunnel over TCP).
@ -45,7 +45,7 @@ The learnings of our performance engineering are in three areas:
## Conclusion ## Conclusion
To conclude: we already achieved a factor of 25 in performance by adapting the code in various ways. We have ideas to improve the performance even more in the future - we also work on using OCaml string and bytes, instead of off-the-OCaml-heap-allocated bigarrays (see [our previous article](https://blog.robur.coop/articles/speeding-ec-string.html), which provided some speedups). To conclude: we already achieved a factor of 25 in performance by adapting the code in various ways. We have ideas to improve the performance even more in the future - we also work on using OCaml string and bytes, instead of off-the-OCaml-heap-allocated bigarrays (see [our previous article](speeding-ec-string.html), which provided some speedups).
Don't hesitate to reach out to us on [GitHub](https://github.com/robur-coop/miragevpn/issues), or [by mail](https://robur.coop/Contact) if you're stuck. Don't hesitate to reach out to us on [GitHub](https://github.com/robur-coop/miragevpn/issues), or [by mail](https://robur.coop/Contact) if you're stuck.

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articles/miragevpn-server.md
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@ -22,7 +22,7 @@ coauthors:
It is a great pleasure to finally announce that we have finished a server implementation for MirageVPN (OpenVPN™-compatible). This allows to setup a very robust VPN network on both the client and the server side. It is a great pleasure to finally announce that we have finished a server implementation for MirageVPN (OpenVPN™-compatible). This allows to setup a very robust VPN network on both the client and the server side.
As announced last year, [MirageVPN](https://blog.robur.coop/articles/miragevpn.html) is a reimplemtation of OpenVPN™ in OCaml, with [MirageOS](https://mirage.io) unikernels. As announced last year, [MirageVPN](miragevpn.html) is a reimplemtation of OpenVPN™ in OCaml, with [MirageOS](https://mirage.io) unikernels.
## Why a MirageVPN server? ## Why a MirageVPN server?