Cipher none not working with latest release v1.32.4181.41

Pritunl Pritunl VPN
1

Morning,

I was using pritunl v1.32.3805.95 with openvpn 2.5.x, now after the upgrade to v1.32.4181.41 the openvpn used is 2.6.x.

I need cipher none (i am aware of security concerns). with openvpn 2.5 was enought cipher none and data-ciphers none.

Now is not working anymore because with ovpn 2.6.x cipher none is overcame by ncp. if I disable ncp or i keep data-ciphers none on client side the connection do not starts.

How can I disable ncp on server?

In all the other conditions ncp agree for aes-256-GCM.

How can I solve it?

2

Should work like this or I am going to disrupt everythinks?

sudo systemctl stop pritunl
wget https://repo.pritunl.com/stable/apt/pool/main/p/pritunl/pritunl_1.32.4181.41-0debian1~bookworm_amd64.deb
sudo dpkg -i pritunl_1.32.4181.41-0debian1~bookworm_amd64.deb
sudo systemctl start pritunl

3

I think this may require adding ncp-disable to the configuration when the cipher is set to none. Adding it to the client configuration may be a fix for current releases. I will add the ncp-disable when the cipher is set to none in the next release.