OpenVPN Not Working

VPN
1

Using:

OC200

ER605 V2.0

TL-SG2008P

2 x EAP245

1 x EAP670

I set up a VPN Server- OpenVPN - Client-to-Site VPN, export the file, try it on a different computer and it will not connect. I figured it might be because of the IP so I logged into my ISP router and got the Public IP and replaced it in the file that Omada exported and still nothing. I am sure I am on the right track but just missing something very basic . Any help would be greatly appreciated. Somewhat new to Networking and loving the learning experience so far. Thank you all!!!

2

Did you open ports on your router/gateway/firewall?

3

You dont need to open any ports because it’s done by the controller when configuring ovpn.
What shows the ovpn-client-log?

4

Looks like you have closet ports on modem/isp side. What is your ISP router? Did you tried set DMZ in your ISP router to ER605?

5

What is the purpose for the OpenVPN? You have an OC200 so remote management isn’t needed over the vpn connection.

6

Very similar setup. I had the OpenVPN server working like charm for several months and then it stopped working. I can still connect to the VPN server from the outside with for example my phone but aftetr that all traffic is dead in the phone. The client shows up in the active OVPN connections list but I cannot access anything in my LAN nor outside of the network with my phone while the VPN is connected.

Maybe there has been a router update or not, I am not sure.

Any idea what is going on and what to do about it?

I have tried the normal resetting and rebooting of everything, I have tried creating a new ovpn file and setting up the client with that and I have tried different routing options. I even tried setting up the VPS in the same IP pool as the LAN but none of these trials have resulted in anything good.
Now I do not come up with new solutons to try.

7

If you have a carrier modem/router before your omada gear you may need to open a port. A lot work as invisible devices

8

To be honest no immediate use, just want to see what I can do with it, access my files on home computer if need be etc. Not for remote management.

9

I have exactly the same problem. I’ll try to rollback and let you know.

10

I did a downgrade from firmware 1.3.1 to 1.2.1 and now the VPN works.

11

A modem should be invisible but you are right - a second router need to be configured. I overread this point…

12

I do not recommend it until you are more versed in networking and security. If you need to access files I would use cloud storage ex Dropbox, Google or One drive. Opening your network without proper knowledge of monitoring and security could prove to be one heck of a headache.

13

Just set up L2TP for VPN into your home network. Works for me to access my nas while away

14

Really interested in any findings!

15

I also have this problem. Always connected with Open VPN or Wireguard on Omada. But then no connection to the network.

16

I did a downgrade of by ER605 V1 to 1.2.1. The OpenVPN server and all users were deleted in this process.
I set up a new OpenVPN server and new users and set up my client for this new OpenVPN server and it immediately worked like a charm.
Next I let the OC200 controller update the ER605 back to 1.3.1. The result is that the OpenVPN server I set up in 1.2.1. is still active and the VPN still works.

Problem solved.

17

same issue here as well

18

Agreed. A lot of people use a modem router combo as their modem and then add a router after which causes the double NAT issues.

19

Not sure what boogeymen this guy is afraid of but don’t listen to him. Do you see any logs in your vpn client?

20

:joy::joy: No, I am looking at opening the port on the ISP providers router now, can’t work on it tonight but will tomorrow :smiling_face_with_sunglasses: