I have set-up SoftEther server running on an Ubuntu (disco) AWS EC2 instance. I am using SecureNAT. My clients connect and get DHCP settings (including DNS servers) from the VPN server however they are unable to resolve any hosts on DNS.
In SecureNAT settings I have tried the default DNS (i.e. the SecureNAT "router" IP) and also Google's public DNS (220.127.116.11 & 18.104.22.168).
The clients and the VPN server are able to ping these addresses but DNS requests always time out even from nslookup. The AWS instance itself is able to resolve DNS requests and in fact runs its own DNS server on port 53.
I'm sure there is something simple I am missing but I cannot figure it out. Does anybody have any suggestions?
Thanks a lot!
Edit to add: I also tried pushing static routes through the VPN gateway to the DNS servers but this didn't work either.
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