Windows 10 & ipsec vpn

Google Groups archive
1

Everyone,

I am trying to get orthanc on a Windows 10 system to transmit dicom
files via windows vpn ipsec tunnel to our radiologist.

I have been able to establish the tunnel with the radiologist without
difficulty before I have orthanc installed. However, after I install
orthanc using Orthancinstaller-Win64-18.7.1.exe on the Windows 10
system I am no longer able to connect to the radiologists VPN. I get
the following error message :

"The remove connection was not made because the attempted VPN tunnesl
failed. The VPN server might be unreaschable. If this connection is
attempting to use an L2TP/IPsec tunnel, the security parameters requird
for the IPsec negotiation might not be configured properly. "

I am using Windows 10 on a kvm Centos 7.5 hypervisor, and have
reinstalled Windows twice now. Each time I can access the VPN before I
have installed Orthanc, but after the Orthanc installation I am unable
to establish the VPN.

Orthanc works impressively well on the Windows 10 system, but I surely
need some help in getting the VPN to work. This problem appears to be
reproducible. The only app that I have installed after the 'Fresh
Start' execution was orthanc; I had not even changed the firewall.

Does anyone have any ideas for a solution?

Your help would be appreciated !!!

Greg Ennis

2

I know of some VPN clients that use the same ports as Orthanc:

http://book.orthanc-server.com/faq/troubleshooting.html

Try to check which ports are being used by your VPN before you install Orthanc or try to configure Orthanc to use other ports.

3

Alain,

Thanks for the help, my problem with the vpn on the Windows 10 machine is that it is intermittent. I have even turned off the firewall to see if that made a difference. It did make a difference and I was allowed to connect, but after one reboot the vpn failed to connect again.

4

As written by Alain, please try with another DICOM port than the default 4242, which is the one used by some VPN clients (notably Juniper).

Change the “DicomPort” configuration option:
http://book.orthanc-server.com/users/configuration.html