Dominic,

Did this command not help with your configuration?

Code:

srv nat ipsecpass on

Didn't work for me, even after a reboot.

I rolled the firmware back to 3.3.1.2_232201. All seems OK now.

Just thought I would check in and note that the latest release (3.3.3.0) has done nothing to fix this for me. Having upgraded to try it, I am back on 3.2.1.

ROBM, I have had that setting switched on since setting up the router. I spent a long time trying to get the VPN passthrough to work before finding out that downgrading the firmware was the solution.

Unfortunately, it looks like the USB ftp server and any other new facilities are barred due to having to stay on 3.2.1

Dominic Fitzpatrick,

I recommend checking with Draytek support as most comments I've seen suggest that PPTP is passthrough is resolved with 3.3.3.

I have tried 3.3.3 (RC and final code) neither helped for me (PPTP or IPsec), nor does the "srv nat ipsecpass on" command
I can't seem to find the old firmware on the website (the FTP link fails - does it need authentication?) and on the web page only 3.3.3 and 3.3.2 are listed.
I would be very keen to try the 3.2.1 firmware.
Thanks

Just in case anyone else needs to find old firmware versions they can be found here:
ftp://ftp.draytek.com/Vigor2820/

For the UK any of the annex A versions should work, I have asked what is the difference betweem the 4 listed but still waiting for a response.

I'll be trying this version later today/tomorrow and will give some feedback when I have tested it.