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NAT Port range not still not working

JasonCantos

Hi all,

 

I have created a NAT rule which is pointed to my Server using this protocol TCP/UDP 50000 - 50050 but i have checked it to this site http://www.yougetsignal.com/tools/open-ports/ and discovers that still some of the ports which is inside the range I defined is not working 

 

ex.

 

50001 - 50005 - Open (working)

50006 - 50009 - Closed (not working)

50010 - Working

50010 - 50050 closed (not working)

 

I created a services as details below

 

Service Definition

Type Definition: TCP/UDP

Destination Port: 50000:50050

Source Port: 1:65535

 

 

NAT Rule

Rule Type: Full NAT (Source+Destination)

For Traffic from: ANY

Using Service: <Service I Created>

Going To: External WAN Address < public IP>

Change the destination to: <Local Server IP Address>

Change the source to: Interna Address <Local Address of Sophos>

 

I am wondering only few ports are working from the range I defined.

 

Can you assist me regarding this?

 

Regards,

 

Jason

 

 

 



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Parents
  • +1

    i think the destinationserver behind this NAT Rule currently don#t use the unreacheble ports.

    use "netstat -an" if you use a windows server to check if server currently has listener active at this ports.


    Dirk

    Systema Gesellschaft für angewandte Datentechnik mbH  // Sophos Platinum Partner
    Sophos Solution Partner since 2003
    If a post solves your question, click the 'Verify Answer' link at this post.

  • 0 in reply to dirkkotte

    Hi Dirkotte

     

    I guess you're right bcoz if some ports are working 50000 - 50005 meaning my config is correct it just so happen maybe the application they install is this particular ports are being used.

     

     

    Regards,

     

     

    Jason 

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