Re: [Openvpn-users] Question about tls-crypt and port 443 firewall ducking

2016-12-22 Thread jack seth
Date: Tue, 20 Dec 2016 20:03:59 +0100 From: Steffan Karger Hi, Exactly. To reliably bypass good DPI, it is not sufficient to hide that traffic is (Open)VPN traffic, but instead you'll need to make it look like allowed traffic. Tunneling over stunnel (which is 'plain' TLS, so looks very simi

Re: [Openvpn-users] Question about tls-crypt and port 443 firewall ducking

2016-12-22 Thread Jan Just Keijser
Hi Jack, On 22/12/16 13:35, jack seth wrote: > > Date: Tue, 20 Dec 2016 20:03:59 +0100 > From: Steffan Karger > > Hi, > > > Exactly. To reliably bypass good DPI, it is not sufficient to hide that > traffic is (Open)VPN traffic, but instead you'll need to make it look > like allowed traffic. Tun

Re: [Openvpn-users] question about "WARNING: this cipher's block size is less than 128 bit"

2016-12-22 Thread Selva Nair
Hi, On Sat, Dec 17, 2016 at 5:13 AM, Gert Doering wrote: > (Main reason we can't stick to BF-CBC is that we use OTP passwords and > with "reneg-bytes 64M" it's asking way too often for user+password...) > If I may ask, assuming you use username/password + OTP, how do you do auth-user-pass-verif

Re: [Openvpn-users] question about "WARNING: this cipher's block size is less than 128 bit"

2016-12-22 Thread Gert Doering
Hi, On Thu, Dec 22, 2016 at 11:26:14AM -0500, Selva Nair wrote: > On Sat, Dec 17, 2016 at 5:13 AM, Gert Doering wrote: > > > (Main reason we can't stick to BF-CBC is that we use OTP passwords and > > with "reneg-bytes 64M" it's asking way too often for user+password...) > > If I may ask, assumi

Re: [Openvpn-users] question about "WARNING: this cipher's block size is less than 128 bit"

2016-12-22 Thread Selva Nair
Hi, Thanks for the details. On Thu, Dec 22, 2016 at 11:40 AM, Gert Doering wrote: > We do not use challenge (static or dynamic) today, as we did not know > that these exist when building the system - so the user enters > his "token + PIN" as one string into the "Password:" field, and the > Kobi