Re: [pptp-devel] VPN PPTP connection error

[David N. <pp...@da...>]

On 24/12/17 22:55, zh...@gm... wrote:
> I am trying to connect to work's VPN on PPTP. My work uses Draytek 
> VPN. I am using macOS High Sierra pppd version 2.4.2
>
> I think VPN server accepts my username and password. But I get 
> MS-CHAPv2 Success packet is badly formed.


By searching Google, I found the same question asked in 2010, at 
https://ubuntuforums.org/showthread.php?t=1570105.  The answer was, 'It 
seems [Draytek's] MS-CHAPv2 implementation is buggy... I managed to 
connect only after recompiling pppd code to "eat" the extra characters.'

Hard to believe that Draytek's implementation is still buggy, but, as 
you're using an old version of PPPD, could it be that your work is using 
an old version of Draytek's VPN?