I've been following the various RPi openvpn guides on the internet over the past few weeks to set up an openvpn server. I have it mostly working, but when I'm connected to the vpn on the client, I have no internet. I've spent many hours troubleshooting this, but to no avail.

Note: if I follow the direction of the second answer here: https://stackoverflow.com/questions/21371530/no-internet-on-openvpn-connection and change the Set DNS/WINS option in tunnelblick on my mac to "Do not set nameserver", then I DO get internet when connected to the VPN and everything works. However, this seems like a hack. I do not have that option when connected on my iPhone using the openvpn app.

I'm hoping that the above is a clue to someone more knowledgable about what's going on. I'm happy to provide any of my configuration files if that's helpful as well.



#iptables -t nat -A POSTROUTING -s -o eth0 -j SNAT --to-source
iptables -t nat -A POSTROUTING -s -o eth0 -j MASQUERADE


iface eth0 inet static
        pre-up /etc/firewall-openvpn-rules.sh 

iptables -t nat -L outputs:

target     prot opt source               destination         

Chain INPUT (policy ACCEPT)
target     prot opt source               destination         

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination         

target     prot opt source               destination         
MASQUERADE  all  --          anywhere            
MASQUERADE  all  --          anywhere
  • What are your iptable and dns settings? In my experience if you can connect but not get out that's usually the problem.
    – Mobalized
    Jan 11, 2017 at 17:43
  • I added my iptable settings. How/where can I confirm my dns settings?
    – brewcrazy
    Jan 11, 2017 at 18:09
  • @Mobalized - Does the info I provided contain any clues? Thanks
    – brewcrazy
    Jan 12, 2017 at 17:42
  • Your dns server is set in the server.conf file. I personally recommend using the google dns. As for the ip tables and other settings I'd reference the link I am posting. There are two iptable options listed in this tutorial, try both. Also I would try running the iptable from the terminal if it doesn't work when you run it from a file. Hope this makes sense.
    – Mobalized
    Jan 12, 2017 at 20:09

1 Answer 1


Thanks to recommendations by @Mobalized, I was able to resolve this.

I had not paid enough attention to this line in server.conf:

# If your router does not do DNS, you can use Google DNS

The non-working configuration that I had pointed to my router. Note the line mentioning that this should be your router's address. This was pulled from the many online openvpn guides that I had been referencing in my setup:

    # If your router does not do DNS, you can use Google DNS
    push "dhcp-option DNS" # This should match your router's IP address.

What I now realize is that my router isn't doing DNS (yet), so following the note's guidance, and using my router's IP, was what caused my issue. I changed it to use Google's DNS and everything is working.

# If your router does not do DNS, you can use Google DNS
push "dhcp-option DNS"

All of the details of my other configuration files can be found at the following link and may be useful for someone troubleshooting the same issue: https://www.raspberrypi.org/forums/viewtopic.php?f=36&t=170932&sid=41162d847f0bcbafebdecd61c5644c3f

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