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MD5-Signed Certificate Warning with OpenVPN on iOS
As of version 1.2.8 of the OpenVPN app on iOS, OpenVPN issues the following warning: > WARN TLS: received certificate signed with MD5. > Please inform your admin to upgrade to a > stronger algori...
FYI, I documented the steps to required to replace the certificates here. Unfortunately it the steps are written for users of Windows, but it also uses mostly cross-platform OpenSource tools and explains what's going on so I think it should be pretty translatable if you don't have access to any Windows boxes.
Just posting this so you have at least one go-forward path.
Looks like Netgear released a firmware fix for the R6700v1. Here is the link for anyone needing it.
https://kb.netgear.com/000059128/R6700-Firmware-Version-1-0-1-48
Please release one for the R6700v2 next...
Hi jg121234 -
Yes, thanks for the post. I believe I saw the update available for R6700 over the past weekend when I was checking for updates in the Setup | Advanced. Will be updating soon and will post how it works.
Thanks!
It looks like R6700v3 firmware fixing this issue was released on 6/1/18.
- Added support for SHA256 certificates in lieu of MD5 for OpenVPN
https://kb.netgear.com/000058850/R6700v3-Firmware-Version-1-0-2-56
Hopefully Netgear can release R6700v2 now that they already released v1 and v3...
R6700v2 Firmware Version 1.2.0.24 OpenVPN MD5 fix released
https://kb.netgear.com/000059475/R6700v2-Firmware-Version-1-2-0-24
Going to give it a try, hopefully everything is good to go!
Hi!
I installed the latest firmware for R6700 v1, downloaded and installed the scripts and files for Windows PC. Took awhile to search and understand an error: "TAP-Windows adapter 'NETGEAR-VPN' not found". The solution is to be sure to rename the Windows TAP adapter to "NETGEAR-VPN" inside Control Panel, otherwise the login will fail because OpenVPN cannot find the TAP adapter. Works great so far, glad to have the added measure of security. Will try to install the files for iOS next for iPhone X.
gramercyradio wrote:
Hi!
I installed the latest firmware for R6700 v1, downloaded and installed the scripts and files for Windows PC. Took awhile to search and understand an error: "TAP-Windows adapter 'NETGEAR-VPN' not found". The solution is to be sure to rename the Windows TAP adapter to "NETGEAR-VPN" inside Control Panel, otherwise the login will fail because OpenVPN cannot find the TAP adapter. Works great so far, glad to have the added measure of security. Will try to install the files for iOS next for iPhone X.
Open clientx.ovpn in Notepad and remove the line "dev-node NETGEAR-VPN" or comment it out by putting a semi-colon in front of it ";dev-node NETGEAR-VPN" and you won't have to name the adapter.
Hi Mike406,
Yes! Thank you for the word of advisement, I appreciate it. I had also downloaded the client configuation and key files to iPhone X, use the latest OpenVPN app for iPhone (and accept the new configuration and key files on the app), works great on iPhone X.
Thanks!