@Pippin said in VPN override remote host ip if local network has the same ip:

@yeahmagnets said in VPN override remote host ip if local network has the same ip:

My remote network is 192.168.1.0/24 and the home network is 192.168.1.24/0

Change at least the home network:
https://community.openvpn.net/openvpn/wiki/AvoidRoutingConflicts

Yeah that is an option but just think that you went to holiday and hotel's network is also 192.168.1.0/24 and some other guest's computer assigned 192.168.1.50 so you can't say leave that ip it conflicts with my file server can you?

There must be solution.

@viragomann you rock man! I thank you to pointing me to the solution! it's working as expected now!

ciao!

@viragomann
These public ip addresses are my vps where openvpn is installed.

Yes.

Yes.

752fda1f-875d-4f38-8e28-bf917811b24e-obraz.png

@wolfsden3

Download the Most Clients config 1 single file with that it should work

4a9f6bf1-87fb-41ad-bc29-5108d59fb25b-image.png

@Gertjan said in Solved: ExpressVPN connection error Data channel cipher negotiation failed (no shared cipher):

Control Channel: TLSv1.3, cipher TLSv1.3 TLS_AES_256_GCM_SHA384, peer certificate: 2048 bit RSA, signature: RSA-SHA256

That's the control channel ;)
.
Data channel is this one:

2023-06-26 11:08:24 us=684115 Outgoing Data Channel: Cipher 'AES-256-GCM' initialized with 256 bit key 2023-06-26 11:08:24 us=684160 Incoming Data Channel: Cipher 'AES-256-GCM' initialized with 256 bit key

@ipguy
For further investigation you have to provide the clients and server logs.

You can try to disable "Data Encryption Negotiation" on the server. If the client has an old config he might not support this feature.

@viragomann Thank you very much. While trying various things, I found that by setting the alias and placing it above the VPN configuration in Firewall -> Rule -> LAN, I can bypass specific sites and not route them through the VPN. Thank you for your guidance and help.

@pst thanks, I looked. But I get the same logs
Jun 20 20:01:24 openvpn 23836 TLS Warning: no data channel send key available: [key#0 state=S_PRE_START id=0 sid=00000000 00000000] [key#1 state=S_UNDEF id=0 sid=00000000 00000000] [ key#2 state=S_UNDEF id=0 sid=00000000 00000000]
Jun 20 20:01:24 openvpn 23836 TUN READ [29]
Jun 20 20:01:24 openvpn 23836 TLS Warning: no data channel send key available: [key#0 state=S_PRE_START id=0 sid=00000000 00000000] [key#1 state=S_UNDEF id=0 sid=00000000 00000000] [ key#2 state=S_UNDEF id=0 sid=00000000 00000000]
Jun 20 20:01:24 openvpn 23836 TUN READ [56]
Jun 20 20:01:24 openvpn 23836 TLS Warning: no data channel send key available: [key#0 state=S_PRE_START id=0 sid=00000000 00000000] [key#1 state=S_UNDEF id=0 sid=00000000 00000000] [ key#2 state=S_UNDEF id=0 sid=00000000 00000000]
Jun 20 20:01:24 openvpn 23836 TUN READ [48]
Jun 20 20:01:24 openvpn 23836 MSS: 1460 -> 1287
Jun 20 20:01:24 openvpn 23836 TLS Warning: no data channel send key available: [key#0 state=S_PRE_START id=0 sid=00000000 00000000] [key#1 state=S_UNDEF id=0 sid=00000000 00000000] [ key#2 state=S_UNDEF id=0 sid=00000000 00000000]

@michmoor In any case, thank you for your help. Many thanks

@zapador said in [Solved] Can't resolve hostnames from OpenVPN Client:

All of these resources (VPN clients) are vessels/ships with monitoring systems onboard that collect data

👍
Ah, nice, I get it.
Collecting data from ships ... Nice !

@viragomann
Yes, the failed and successful users are related to the same ISP. This is giving me no way out as OpenVPN clients are generated with the same settings for connecting to the server. Some connect and some don't, giving this TLS error.

@bingo600The IPV4 tunnel option is blank. Could that be the problem there?
tunnel_.png

@aldomoro

Ok, thank for the feedback.

I've no 'Eset', and said goodbye to the 'antivirus' world many years ago.
I use 'pfSense' as my network inventory tool 😊

@viragomann It really worked just by changing the tunnel mask
3a0337c6-5a1a-47ec-860f-764d5fc128f0-image.png

Thanks a lot mate!

My configuration dated from version 22.01 and then I went from version to version, now in 23.05 activating "DCO" and "QAT" on my 8200 crashed "UNBOUND".
I completely redid the "Wizard" and now I can activate "DCO" and "QAT" and everything works. I've taken all the "information" from my old setup, but well ... one more mystery!

Yup. The rule blocking openvpn from the LAN side is what I have to do for the same reason. Without the rule, the VPN would connect and cause strange network connectivity issues. With the rule, the VPN doesn't work and it's easier to troubleshoot.