Can't connect windows computer to openvpn

Tiger 0

I'm setting up an openVPN on my pc to connect in our office server. After configuring the openvpn server from pfsense and installing the openvpn client export on my pc, it is not getting connected to the tunnel network.

I tried what Lawrence did from this video and still can't connect. what could be the problem?

Thank you!

Tiger 0

Here's what it shows when I try connecting my pc.

noplan

@tiger-0

Not concerning your private ip on the log

Have you opened your 1194 port on wan
Client export and openVPN setup are allign
In terms of exporting the settings with or without 2.5 for openVpn

Next sterp is to show your vpn server settings
Just with the hint on a vid it's not gonna work
BrNP

Tiger 0

@noplan Yes, the 1194 port is already open from the firewall rules.

noplan

@tiger-0

and the rest ?

btw what are the logs of your openVPN Server sayin ?

for me it looks like you go no route to your vpn server

Bob.Dig

Why is the remote address a local one?

noplan

@bob-dig

not sure if that's the only thing to consider why it's not working

Tiger 0

my openvpn logs asks to check network connectivity. I think I need to configure something but I can't seem to find it. Can you suggest what should I check?

viragomann

@tiger-0 said in Can't connect windows computer to openvpn:

Yes, the 1194 port is already open from the firewall rules.

Again, your client tries to connect to a private IP. This let us assume that you OpenVPN servers WAN IP is behind a router.
So you have

to forward UDP 1194 to pfSense on that router
in the client export utility enter your public IP or host name at "Host Name Resolution" and export a new config for the client

Tiger 0

@viragomann

We can't configure the firewall from our router that was given by our ISP.
tried adding the public IP on the client export and still can't connect

Gertjan

@tiger-0 said in Can't connect windows computer to openvpn:

We can't configure the firewall from our router that was given by our ISP.

If you have an upstream (ISP) router in front of pfSense, you have to "NAT"that router.
That's not a choice, it's mandatory.

NATting a port in the ISP's router isn't something special. I never saw an ISP - using their routers - in France (where I live) that doesn't support NAT.

viragomann

@tiger-0
At least there should be a possibility on the router to set an internal IP or device as "DMZ" or "exposed host", which typically means that the router forwards any traffic to the stated IP or device.

noplan

@viragomann

in Austria there are some (gettin more and more) ISP business routers (modems) that dont allow port forwarding opening ports and so on ... they provide a private range and thats it
so no openVPN for a lot of business (small) customers from one of the largest ISP here ;)

yah there is a way round set the providerBox to bridge mode and use your pfS instead of that provider box

and yeah i like that approach @Gertjan

That's not a choice, it's mandatory.

Gertjan

@noplan said in Can't connect windows computer to openvpn:

in Austria there are some (gettin more and more) ISP business routers (modems) that dont allow port forwarding opening ports and so on ... they provide a private range and thats it
so no openVPN for a lot of business (small) customers from one of the largest ISP here ;)

If they don't have enough "IPv4" for their clients, then yes, that's possible.
IPv6 was created to solve that issue.

@noplan said in Can't connect windows computer to openvpn:

modems

Modems are often bridges.
With those devices their is nothing to 'NAT' as modems (bridges) don't work with "IP" addresses.
They (the ISP) could still offer you some RFC1918 ......

viragomann

@noplan said in Can't connect windows computer to openvpn:

in Austria there are some (gettin more and more) ISP business routers (modems) that dont allow port forwarding opening ports and so on

Business routers? Not seen such ones up to now.

no openVPN for a lot of business (small) customers from one of the largest ISP here ;)

I know a business customer who got a CGN IP, but wanted to run services inside his network. A phone call to the "largest" provider was sufficient to get a public IPv4.
However, this was 2 years ago and the IPv4 lack is going on, of course.

noplan

@viragomann

largest ISP in Austria no chance in hell to get anything else than a 10.0.0.0/24
and the ISP DNS as i mentioned earlier sold to small business

some of the things have nothing to to with the lack of IPV4
just with money the ISP wants from his clients :)

viragomann

@noplan said in Can't connect windows computer to openvpn:

largest ISP in Austria no chance in hell to get anything else than a 10.0.0.0/24

Yes, I'm talking about this one.

I know the 10.0.0.0/24 only from the ISP routers. But up to now, any was able to forward traffic and also could be set into bridge mode.

However, if you don't intervene, you might get a CGN WAN IP, something like 100.x.x.x, which is not public and hence cannot be accessed from outside.

noplan

@viragomann

got a talk with that ISP today motivated by your post ;)

this business connect they sell only works
a) you get a private 10.0.0.0/24 and no open ports whatever
b) a box set in bridge mode and you have to deal with all the other nasty stuff

not sure if there isn't a small fee each month for usin b)

oh man i love ADSL in austria ;)

viragomann

@noplan said in Can't connect windows computer to openvpn:

b) a box set in bridge mode and you have to deal with all the other nasty stuff

Therefor we use pfSense, which handles much better the nasty stuff then the any providers router.

noplan

@viragomann said in Can't connect windows computer to openvpn:

Therefor we use pfSense, which handles much better the nasty stuff then the any providers router

yeeessss
Totally agree on that one !