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Windows 10 not listening on TCP port 3345

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Monday, November 19, 2018 5:35 PM

I set up a windows 10 pro PC to act as a camera server for a client. Their computer networking IT company has forwarded the TCP ports 80, 443, 3345, and 7001 for me as needed by my camera server software. I can not get the windows 10 PC to listen on port 3345 no matter what I try. 80, 443, and 7001 are showing open when I check through canyouseeme.org.

I tried it with windows firewall turned off to no avail.

I tried it with rules set up in windows firewall to allow all these ports inbound and outbound. 3345 still blocked.

I have scanned the server with another PC on the LAN using portqueryui.exe. TCP port 3345 is the only one not listening telling me it is the server which is blocking that port.

Is there a service I need to turn off or on in windows that is specific to that port?

Thanks!

All replies (8)

Tuesday, November 20, 2018 5:33 AM

Hi,

As far as I know, there are two common causes for your problem. The first is regarding to the firewall and the other is the loopback address.

Since we can now rule out the possibility that this is caused by your firewall settings, would you please try the command netstat -a | find "3345" to check which IP the port is bound to?

If it's listening on 0.0.0.0 then it will answer on any IP, but if it's shown as listening on 127.0.0.1 then you may have trouble connecting to that port from another host

Regards,

Zoe

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Thursday, November 22, 2018 7:04 AM

Hi,

Just checking in to see if the information provided was helpful.

Please let us know if you would like further assistance.

Best Regards,

Zoe

Please remember to mark the replies as answers if they help and unmark them if they provide no help.
If you have feedback for TechNet Subscriber Support, contact [email protected].

Monday, November 26, 2018 1:27 AM

Hi,

Was your issue resolved?

If you resolved it using our solution, please "mark it as answer" to help other community members find the helpful reply quickly.

If you resolve it using your own solution, please share your experience and solution here. It will be very beneficial for other community members who have similar questions.

If no, please reply and tell us the current situation in order to provide further help.

Best Regards,

Zoe

Please remember to mark the replies as answers if they help and unmark them if they provide no help.
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Monday, November 26, 2018 6:40 PM

Thank you for the response! I'm just now able to get back to looking into this.

Before you had responded I did a reinstall of the OS hoping that would solve the issue. Now I have 3/4 of the ports not making it through. 7001 is good in canyouseeme.org.

I tried the command from the target server and got the following for the 4 ports I need. 

I'm not sure what to make of these results or how to make edits.

C:\Users\SHH>netstat -a | find "3345"

C:\Users\SHH>netstat -a | find "80"
  TCP    0.0.0.0:7680           DESKTOP-2PLA6CL:0      LISTENING
  TCP    172.29.20.100:64780    ec2-52-45-107-237:https  TIME_WAIT
  TCP    172.29.20.100:64800    ec2-54-145-200-177:http  TIME_WAIT
  TCP    172.29.20.100:64801    DESKTOP-2PLA6CL:7001   TIME_WAIT
  TCP    172.29.20.100:64802    DESKTOP-2PLA6CL:7001   TIME_WAIT
  TCP    172.29.20.100:64803    ec2-34-234-18-172:https  TIME_WAIT
  TCP    172.29.20.100:64804    ec2-52-45-107-237:https  TIME_WAIT
  TCP    [::]:7680              DESKTOP-2PLA6CL:0      LISTENING
  UDP    [fe80::89a4:d752:1f0f:c234%17]:1900  *:*
  UDP    [fe80::89a4:d752:1f0f:c234%17]:63433  *:*

C:\Users\SHH>netstat -a | find "443"

C:\Users\SHH>netstat -a | find "7001"
  TCP    0.0.0.0:7001           DESKTOP-2PLA6CL:0      LISTENING
  TCP    127.0.0.1:64968        DESKTOP-2PLA6CL:7001   TIME_WAIT
  TCP    172.29.20.100:7001     DESKTOP-2PLA6CL:56173  ESTABLISHED
  TCP    172.29.20.100:7001     DESKTOP-2PLA6CL:56175  ESTABLISHED
  TCP    172.29.20.100:7001     DESKTOP-2PLA6CL:56192  ESTABLISHED
  TCP    172.29.20.100:7001     DESKTOP-2PLA6CL:65076  ESTABLISHED
  TCP    172.29.20.100:7001     DESKTOP-2PLA6CL:65077  FIN_WAIT_2
  TCP    172.29.20.100:7001     DESKTOP-2PLA6CL:65078  FIN_WAIT_2
  TCP    172.29.20.100:7001     DESKTOP-2PLA6CL:65079  FIN_WAIT_2
  TCP    172.29.20.100:7001     DESKTOP-2PLA6CL:65080  FIN_WAIT_2
  TCP    172.29.20.100:7001     DESKTOP-2PLA6CL:65083  ESTABLISHED
  TCP    172.29.20.100:7001     DESKTOP-2PLA6CL:65084  ESTABLISHED
  TCP    172.29.20.100:56173    DESKTOP-2PLA6CL:7001   ESTABLISHED
  TCP    172.29.20.100:56175    DESKTOP-2PLA6CL:7001   ESTABLISHED
  TCP    172.29.20.100:56192    DESKTOP-2PLA6CL:7001   ESTABLISHED
  TCP    172.29.20.100:64934    DESKTOP-2PLA6CL:7001   TIME_WAIT
  TCP    172.29.20.100:64935    DESKTOP-2PLA6CL:7001   TIME_WAIT
  TCP    172.29.20.100:64947    DESKTOP-2PLA6CL:7001   TIME_WAIT
  TCP    172.29.20.100:64948    DESKTOP-2PLA6CL:7001   TIME_WAIT
  TCP    172.29.20.100:64959    DESKTOP-2PLA6CL:7001   TIME_WAIT
  TCP    172.29.20.100:64960    DESKTOP-2PLA6CL:7001   TIME_WAIT
  TCP    172.29.20.100:64973    DESKTOP-2PLA6CL:7001   TIME_WAIT
  TCP    172.29.20.100:64974    DESKTOP-2PLA6CL:7001   TIME_WAIT
  TCP    172.29.20.100:64985    DESKTOP-2PLA6CL:7001   TIME_WAIT
  TCP    172.29.20.100:64986    DESKTOP-2PLA6CL:7001   TIME_WAIT
  TCP    172.29.20.100:65002    DESKTOP-2PLA6CL:7001   TIME_WAIT
  TCP    172.29.20.100:65003    DESKTOP-2PLA6CL:7001   TIME_WAIT
  TCP    172.29.20.100:65006    DESKTOP-2PLA6CL:7001   TIME_WAIT
  TCP    172.29.20.100:65013    DESKTOP-2PLA6CL:7001   TIME_WAIT
  TCP    172.29.20.100:65014    DESKTOP-2PLA6CL:7001   TIME_WAIT
  TCP    172.29.20.100:65025    DESKTOP-2PLA6CL:7001   TIME_WAIT
  TCP    172.29.20.100:65026    DESKTOP-2PLA6CL:7001   TIME_WAIT
  TCP    172.29.20.100:65037    DESKTOP-2PLA6CL:7001   TIME_WAIT
  TCP    172.29.20.100:65038    DESKTOP-2PLA6CL:7001   TIME_WAIT
  TCP    172.29.20.100:65048    DESKTOP-2PLA6CL:7001   TIME_WAIT
  TCP    172.29.20.100:65049    DESKTOP-2PLA6CL:7001   TIME_WAIT
  TCP    172.29.20.100:65060    DESKTOP-2PLA6CL:7001   TIME_WAIT
  TCP    172.29.20.100:65061    DESKTOP-2PLA6CL:7001   TIME_WAIT
  TCP    172.29.20.100:65072    DESKTOP-2PLA6CL:7001   TIME_WAIT
  TCP    172.29.20.100:65073    DESKTOP-2PLA6CL:7001   TIME_WAIT
  TCP    172.29.20.100:65076    DESKTOP-2PLA6CL:7001   ESTABLISHED
  TCP    172.29.20.100:65077    DESKTOP-2PLA6CL:7001   CLOSE_WAIT
  TCP    172.29.20.100:65078    DESKTOP-2PLA6CL:7001   CLOSE_WAIT
  TCP    172.29.20.100:65079    DESKTOP-2PLA6CL:7001   CLOSE_WAIT
  TCP    172.29.20.100:65080    DESKTOP-2PLA6CL:7001   CLOSE_WAIT
  TCP    172.29.20.100:65083    DESKTOP-2PLA6CL:7001   ESTABLISHED
  TCP    172.29.20.100:65084    DESKTOP-2PLA6CL:7001   ESTABLISHED
  UDP    0.0.0.0:7001           *:*

Tuesday, November 27, 2018 7:20 AM

Hi,

Netstat shows only those ports which are currently listening. If netstat does not show your port it is because the application which should listen to this port is not working properly.

  • TCP Port 3345 may use a defined protocol to communicate depending on the application.
  • TCP port 80 is the port number assigned to commonly used internet communication protocol, Hypertext Transfer Protocol (HTTP). 
  • TCP port 443 is the standard TCP port that is used for website which use SSL.

Since some of the services may not auto-start after the reinstall, would you please make sure that all the related services are started

Regards,

Zoe

Please remember to mark the replies as answers if they help and unmark them if they provide no help.
If you have feedback for TechNet Subscriber Support, contact [email protected].

Thursday, November 29, 2018 2:43 AM

Hi,

Just checking in to see if the information provided was helpful.

Please let us know if you would like further assistance.

Best Regards,

Zoe

Please remember to mark the replies as answers if they help and unmark them if they provide no help.
If you have feedback for TechNet Subscriber Support, contact [email protected].

Monday, December 3, 2018 1:51 AM

Hi,

Was your issue resolved?

If you resolved it using our solution, please "mark it as answer" to help other community members find the helpful reply quickly.

If you resolve it using your own solution, please share your experience and solution here. It will be very beneficial for other community members who have similar questions.

If no, please reply and tell us the current situation in order to provide further help.

Best Regards,

Zoe

Please remember to mark the replies as answers if they help and unmark them if they provide no help.
If you have feedback for TechNet Subscriber Support, contact [email protected].

Tuesday, December 4, 2018 6:07 AM

Hi,

As this thread has been quiet for a while, we will propose the solution as answer. If you need further help, please feel free to reply this post directly so we will be notified to follow it up. You can also choose to unmark the answer as you wish.   BTW, we’d love to hear your feedback about the solution. By sharing your experience, you can help other community members facing similar problems. Thanks for your understanding and efforts.

Best Regards,

Zoe

Please remember to mark the replies as answers if they help and unmark them if they provide no help.
If you have feedback for TechNet Subscriber Support, contact [email protected].