Just had NBN connected at our home office with a Telstra Gateway Pro (v7610) modem. We can no longer connect to our work VPN. It worked flawlessly when we were on ADSL2 with both an older modem and a V7610.
I have found numerous posts about his but no solution that I can find. There must be a simple setup change in the V7610 that will allow us to connect to our work VPN.
Does someone have any easy answer?
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I believe that we were having same or similiar problem that has now been fixed.
Problem we were having was that VPN and other inbound connections would stop working. Whilst the VPN and other connections were not working we were able to surf the net plus send and receive emails. (How do you tell Telstra there is an internet problem when you can surf the net?)
I called Telstra support and got the right solution. The solution was to turn off IPv6.
Log into the Modem, go to Advanced->Advanced Settings, IPv6, you should find that the setting is Auto WAN, change this to IPv6 Disabled and apply the change, you may need to reboot the modem.
Once it is up, hopefully all your problems are sorted.
Apparently Telstra is now supporting IPv6 on NBN, the modem when it starts, starts in IPv4, after a while will change over to IPv6 and then your problems begin. VPN and port forwards I believe only use IPv4. (Certainly the ones we use are anyhow.)
Hopefully a simple fix to a PITA problem.
Had no issues since downgrading the firmware as described before. But did check and the IPv6 setting is indeed AutoWAN. I'm not going to change it though - don't want to change something that appears to be working!