[Makokha1990]

Hi,

I am coming a long way trying to install a VPN router with Cyberghost. After several weeks of bad Cyberghost support, we succeeded a few days ago in establishing the desired VPN connection, but now without an internet connection.

I am in Austria and need a network / VPN Router for Ireland. Magenta, as my ISP, has provided me with a 250k Cable Modem T3492LG-LC.

My Netgear R7000 is connected over LAN, and I used the guide from Cyberghost to get the corresponding settings.

https://support.cyberghostvpn.com/hc/en-us/articles/213811885-Router-How-to-Set-Up-OpenVPN-on-DD-WRT-Routers

I reset the NetGear router after several attempts with incorrect parameters from Cyberghost and then reconfigured the parameters. The Netgear router started successfully, and I had a good 40k down / 10k upload VPN connection with the Dublin server. After a normal restart the next day, I have no internet anymore. Also, a new reset of the NetGear router and a new configuration show no change.

The decisive hints and parameters came late from Cyberghost support: "try a new one via UDP and this time to set as encryption cypher AES 256 -GCM and secondary AES 128 GCM."

Additionally, I deactivated the firewall setting in the Magenta Router.

Does anyone have any idea why the internet connection is now missing? Is there an IP conflict with the magenta router?

Cyberghost support asked for an open 1194 port on the Magenta Router, but the configuration tells me port 443 is to be used.

I was just wondering why the internet connection worker once. I did right now the same again, resetting the NetGear Router and starting the same configuration ==> again, with NO Internet.

Checking the LAN panel, I have 192.168.1.134 as the IP address. Shouldn't it be the VPN Server address 10.1.4.123?

[foz111]

take a look at egc ovpn client guide
most vpn providers instructions are outdated
https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=327398

[Alozaros]

yep best to look at egc guide..
-also bear in mind some of the settings are probably not needed...as those guidelines are for an older firmware build...
-not bad idea to update to the current firmware build 49599...
and if you post OpenVPN output post it all...as its not clear where you loose connection...

I also noticed their guide is for port 443, so if you need to use another port you have to change it...to 1194 or whatever is used...

also inbound firewall on TUN is preferred option to use...
you can use Encryption Cipher:AES-256-GCM instead or even ChaChaPoly as those are a touch better

in general you don't have to open any ports..or at least i don't do that on my set ups...

[Makokha1990]

Hi

I don't lose my VPN connection at any point, but now I cannot establish any internet connection!

At first, I suspected the google browser, but all other browsers gave me the same error message. NO INTERNET

I tried the same with my iPhone over WiFi to check if my PC is telling me something wrong. Also, the mobile phone is confirming there is NO internet connection...

[egc]

Have a look at the OpenVPN Client setup guide
https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=327398

This is a sticky in this forum.

There is a paragraph about Cyberghost with updated settings.

After you have done that and still have trouble post a screenshot of the OpenVPN Setup page, contents of the Additional config and output of:

[Makokha1990]

Hi,

Thanks for the hints and provided links.

I have repeatedly tried to recreate and document the error pattern with the missing internet.

I did not change any parameters in the NetGear router or PC and suddenly had internet on my PC and also on the PC that uses the Dublin server. Strangely, however, I got a Belgian IP displayed with the command "iplocation.net".

After restarting my PC, the internet is no longer available. I continue to try to find a suitable configuration with the new documents and continue to test.

[egc]

Sorry I wasn't clear enough we need to see a screenshot of the OpenVPN Setup page (Services/VPN), and we need the contents of the Additional Config on that page.

[Makokha1990]

Hi,

here you go. I am sharing this here

additional config:


resolv-retry infinite
redirect-gateway def1
persist-key
persist-tun
nobind
cipher AES-256-CBC
ncp-disable
auth SHA256
ping 5
ping-exit 60
ping-timer-rem
explicit-exit-notify 2
script-security 2
remote-cert-tls server
route-delay 5
verb 4

[the-joker]

From the screenshot thats at least a build from around 8 builds ago or more.

[Makokha1990]

Hi,

I can find several posts in the forum that there is (was) an issue with DD-WRT firmware around July 2022. With newer Firmware the R7000 is restarting unexpectedly sometimes.

The router was delivered with that DD-WRT Firmware, and so I was afraid to update

[the-joker]

Not all reports have issues, so it may be very well configuration dependent.

Its not like you cant backup your current settings, upgrade reset to defaults and reconfigure from scratch and see for yourself.

Its not like you cant return to the current build you have, reset to defaults and restore the backup from that build to return to current state you are in now.

But sure, let fear prevent you from doing anything in life. Good luck with that philosophy.

[egc]

To recap you do not need to open any ports on the primary (what you call Magenta) router let alone disable the firewall (that could cause that the internet stops)

That is all rubbish.

My advice make sure that the Magenta router is working in its normal state.

Upgrade to the latest build 49599 (not necessary per se as this build should work also, but it is recommended)
Reset to defaults.
Do NOT restore from a backup, put settings in manually!!

Make sure you have got a working internet including your wifi do not forget to set a wifi password.

Then download the OpenVPN Client setup guide and start reading, start with the DNS settings and read the specific Cyberghost instructions.

I suggest not only reading but actually try those
Those settings worked in the past, of course things could have changed so we cannot guarantee that it will work but at least it is better then what the VPN provider is telling you.

If you have setup according to these instructions reboot the router
After rebooting and waited for a couple of minutes look at the OpenVPN status page, if it does not show CONNECTED SUCCES and/or you do not have internet show output:

[Makokha1990]

Hi,

Thank you so much for your professional support; everything is working as far as expected.

Big shame on the Cyberghost support team, but I am guilty as well; I should have come directly here!

Reading well, the Cyberghost config page shows that it was made for the following:

"Firmware: DD-WRT v3.0-r40900 std (09/04/19)
Hardware: Linksys WRT32x"

I still don't update my firmware, which works well with your guidelines and your available Cyberghost PDF setting.

Also, your hint to NOT mind any ports and Firewall settings where important, even the PDF on this site here is saying, "Do not use any firewall rules"

I also replaced the additional config settings with the ones from the PDF.

Thanks again; I will observe and keep posting if something can be optimised

[egc]

Great to hear it is working.

Glad we could help