DonnyJohnny
Very Senior Member
CTR is used when using tls-crypt I think... check your setting in that area... like tls-Auth must be disable and TLS control channel security is set to encrypt channel. If u not using that, then set the TLS control channel security to zero (0) and use tls-Auth,I have upgraded my AC68U from 380.69 to 382.2 beta 2 and I’m having problems establishing the VPN connection using same settings (all configured manually from scratch). I’m using AES-256-CBC in configuration but I can see in log that AES-256-CTR is used regardless of the algorithm selected in OVPN config and I think that’s the reason of my issue.
Log detail with AES-256-CBC selected in OVPN configuration pages.
Control Channel Encryption: Cipher 'AES-256-CTR' initialized with 256 bit key
Jan 4 05:01:37 ovpn-server1[2479]: Outgoing Control Channel Encryption: Using 256 bit message hash 'SHA256' for HMAC authentication
Jan 4 05:01:37 ovpn-server1[2479]: Incoming Control Channel Encryption: Cipher 'AES-256-CTR' initialized with 256 bit key
Jan 4 05:01:37 ovpn-server1[2479]: Incoming Control Channel Encryption: Using 256 bit message hash 'SHA256' for HMAC authentication
Regards.