Hello Julian, thanks for your quick response. I know about --cipher none options in P2P mode, but for testing with multiple clients I need --mode server.
As for the --tls-cipher option, NONE is not working for me. --show-tls also lists no other "non encrypted" cipher I could use. Besides it still seems to do the TLS handshake right? Is there any way I can have the unencrypted P2P communication with multiple connected clients (without having OpenVPN running in parallel)? Best Regards, Valentin On Mon, Aug 31, 2015 at 12:56 PM, Jan Just Keijser <[email protected]> wrote: > Hi Valentin, > > Valentin Sawadski wrote: >> >> Hello, >> >> I'm looking for a way to remove any encryption or MAC from OpenVPN in >> "--mode server". >> >> Since I'm new to the OpenVPN code base my starting point right now >> will be patching "options.c" to allow "--mode server" without TLS. >> Will this already be enough to make it work or is TLS tightly >> integrated into the workings of the mode? >> >> Thanks for any pointers! >> > > > you don't need to run openvpn using '--mode server' at all. If you run a > poin-to-point connection like this > > openvpn --ifconfig 10.200.0.1 10.200.0.2 --dev tun --proto udp --cipher > none --auth none > > openvpn --ifconfig 10.200.0.2 10.200.0.1 --dev tun --proto udp --cipher > none --auth none --remote <remote host> > > then you'll end up with a fully plaintext tunnel. > If you insist on using (useless) certificates and some form of "--mode > server" then I'd suggest using > > --mode server --tls-cipher NONE --cipher none --auth none > > > this should also disable the TLS cipher as well. > IOW, no code changes should be needed at all :) > > HTH, > > JJK > -- Valentin Sawadski Founder & Embedded Software Tel.: +49 - (0) 89 - 716 77 86 - 15 Fax: +49 - (0) 89 - 716 77 86 - 99 Mobil: +49 - (0) 162 - 460 163 4 facebook.com/tado | twitter.com/tado | youtube.com/tado www.tado.com | tado° GmbH | Lindwurmstr. 76 | 80337 Munich | Germany Managing Directors: Christian Deilmann | Johannes Schwarz | Leopold v. Bismarck Registered with the Commercial Register Munich as HRB 194769 B | VAT-No: DE 280012558
