AES-256-OFB: not found [ERR]

Post Reply
howlingthunder
OpenVpn Newbie
Posts: 2
Joined: Sun May 14, 2017 4:23 pm

AES-256-OFB: not found [ERR]

Post by howlingthunder » Sun May 14, 2017 4:25 pm

Using same config file on Mac and Windows with no issue. Using same certificates. iPad is on 10.3.1 and OpenVPN is 1.1.1

Thanks for any help on why this error is occurring. Hoping someone else has seen this

User avatar
TinCanTech
OpenVPN Protagonist
Posts: 2819
Joined: Fri Jun 03, 2016 1:17 pm

Re: AES-256-OFB: not found [ERR]

Post by TinCanTech » Sun May 14, 2017 5:20 pm

The error is

Code: Select all

AES-256-OFB: not found [ERR]
so try AES-128-CBC

howlingthunder
OpenVpn Newbie
Posts: 2
Joined: Sun May 14, 2017 4:23 pm

Re: AES-256-OFB: not found [ERR]

Post by howlingthunder » Mon May 15, 2017 2:06 am

Same error with CBC

TiTex
OpenVPN Expert
Posts: 209
Joined: Tue Apr 12, 2011 6:22 am

Re: AES-256-OFB: not found [ERR]

Post by TiTex » Mon May 15, 2017 7:53 am

probably iOS openssl library doesn't support that cipher
if your server is running openvpn 2.4 you can use --ncp-ciphers option
https://community.openvpn.net/openvpn/w ... n24ManPage

Post Reply