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port 1723 not open in pptp DC server 2016

hi,
in srever 2016,
configured pptp vpn.
when i try            telnet ipaddress(of the pptp vpn sesrver) 1723 - telnet isn't working. as a result vpn also not working
i checked windows firewall with advanced features. i got the 1723 port allowed for inbound connections.

what other things i can check to see why port 1723 is not open ?
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65td
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One can use Powershell or CMD prompt to see a list of active in use ports.

cmd
 C:\> netstat -a -b

See more information follow the link below.

https://stackoverflow.com/questions/48198/how-can-you-find-out-which-process-is-listening-on-a-port-on-windows
Hi,

To check the port is allowed in firewall, trigger the command

netsh advfirewall firewall show rule name=all | find "1723"

This will show you the local port as well as remote port if it's allowed.

Also, you can use PortQuery tool to check the client and server communication with port 1723.
you have to open the port on your external firewall, and configure port forwarding
you then as others pointed out add an incoming exclusion to allow port 1723 in

note this is an older protocl and some retail routers have been known to have issues with protocol 47 (gre) tunnel which is what pptp uses.

telnet might not be a vaiable application/command on the system.


on the server
netstat -an | find /i ":1723'"
do you have a LISTENING entry returned?
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