IIS 7 and Above
PPTP VPN Web Client Connection Reset
Last post May 10, 2019 08:05 PM by TheLegendTM
May 09, 2019 11:42 AM|TheLegendTM|LINK
I am new in this field so, excuse me for my lack of knowledge.
My setup is on windows server 2008 r2 enterprise sp1, The VPN server and the Web server (IIS 7) are on the same machine.
We are hosting a SCADA web server which is meant to be remotely accessed by VPN clients and when I navigate to its address as a VPN client I get "Connection reset" in (Internet Explorer-Chrome), I believe it doesn't get me to the windows
security login form, by investigating the log file we get those couple of unique entries:
2019-05-09 06:32:39 192.168.1.106 GET /citect - 80 - 192.168.1.106 Mozilla/5.0+(Windows+NT+10.0;+WOW64;+Trident/7.0;+rv:11.0)+like+Gecko 401 2 64 3697
2019-05-09 06:32:58 192.168.1.106 GET /citect - 80 - 192.168.1.106 Mozilla/5.0+(Windows+NT+10.0;+WOW64;+Trident/7.0;+rv:11.0)+like+Gecko 401 2 121 18907
Regarding that I can access other network devices web servers successfully when I am connected remotely as a VPN client and this web server can be accessed successfully by any local machine in the network.
May 10, 2019 12:04 AM|lextm|LINK
Have you seen any 401.1? As if the VPN server translates requests from clients as local traffic to the web server, the classic loopback check issue might occur, https://support.microsoft.com/en-ca/help/896861/you-receive-error-401-1-when-you-browse-a-web-site-that-uses-integrate
May 10, 2019 08:05 PM|TheLegendTM|LINK
Thanks for your reply,
The only error code we have in the log file is 401.2 however, I disabled the loopback check and we still have the same issue.
Please take also those considerations:
1-I can access the default IIS 7 website of the server as a VPN client but the welcome picture can't load.
2-The PPP adapter RAS interface of the server has a different IPv4 address with different subnet mask and every connected VPN client is assigned an IPv4 address within this different subnet mask, however I can ping and access all devices within the right