Subj : Re: Ports
To   : Grease
From : Digital Man
Date : Thu Mar 02 2023 00:26:55

  Re: Re: Ports
  By: Grease to Digital Man on Wed Mar 01 2023 05:24 pm

 > On 02-28-23 19:51, Digital Man mumbled to Grease about Ports.
 >
 >  DM>   Re: Ports
 >  DM>   By: Grease to All on Tue Feb 28 2023 04:24 pm
 >
 >  > I don't know where to go after this, but here goes. I have a Deco m4
 >  > router.
 >
 >  > I've done the NAT PORT Forwarding to open Port 23. Internal IP is the Ip
 >  > address of my machine. Internal port is 23.
 >
 >  > The external port is the one that is see in the Synchronet Port Scanner.
 >  > In UFW (linux), I open port 23 (sudo ufw 23 allow)
 >
 >  > It still does not allow communication.
 >
 >  DM> Have you checked the UFW logs? Have you tried disabling UFW?
 >
 > I have not checked the logs.

That would be a good start.

 > I have tried disabling UFW. Same result.

Any other firewalls or gateways in the way? Check their logs too or try disabling them.

 >  > Am I missing something? Is there a
 >  > way to make it think it's 23 and it's reall 4023? My limited ability is
 >  > not getting me far.
 >
 >  DM> Define "it".
 >
 > The port or whatever is blocking entry. It does let traffic out, not in.

A port is simply a number, like an address extension, it doesn't do anything. Yes, you can have a network address translately (NAT) gateway expose a different public/WAN port than than the internal/private/LAN port you forward/map it to.
-- 
                                            digital man (rob)

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