Thank you for the reply Jean-Philippe
The flow would be as follows....
client <====== LAN =======>XX SME SERVER <====INTERNET===> PC1 with DAV in https (HAS VALID CERT)
this way should works straight forward and I access few webdav this way.
XX = Appears to be where to be the point of failure to connect.
Removing SME Server from the path by connecting directly through the ISP works.
Do you mean connecting your PC directly in place of the SME ? Or through another connection from same ISP , other ISP ? From reading agin your first comment I understand from another connection, maybe different ISP.
without all information we can not help you.
First thing is what does it means "is failing." What is the expected result what do you get ? what is the error ?, HAve you search the log on your PC, on the remote server ? on the SME ?
So what it could be, and without limitation to only this list :
- your ISP blocking this server
- your ISP having issue routing to the remote server
- your LAN subnet is not ad hoc and conflict with an internet subnet used in the routing between you and the webdav server.
- you SME is not directly connected to internet but the modem is acting also as router and has some firewall enabled.
- you installed a software or a contrib that prevent outgoing connection
- you altered in an unknown way you SME
...
- a bug