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Legacy Forums => General Discussion (Legacy) => Topic started by: Nicole Clark on February 15, 2001, 09:54:15 AM

Title: Opening ports
Post by: Nicole Clark on February 15, 2001, 09:54:15 AM

I wonder if someone can tell me the command to use in order to see what ports are available and open/closed on my E-smith server. I would also like to know the preocedure to open a particular port.

Any help is appreciated and Thanks in advance.

Title: Re: Opening ports
Post by: Bill on February 15, 2001, 04:03:32 PM

Nicole,
Try the following command from a shell prompt:

     netstat -atuvp | more

By default, netstat displays network connections.  The five flags mean:

a -- show all sockets
t -- list TCP services
u -- list UDP services
v -- verbose
p -- display the name of the program using the port

'Hope this helps.
-- Bill

Title: Re: Opening ports
Post by: Hennie Vermaak on February 20, 2001, 09:24:31 AM

I have the same problem

I used to run e-smith 4.0.1 as a dial-up server but recently upgraded to
version 4.1. I used to be able to connect to an external centralized
information server via port 5005 and an external pop3 server and it
worked fine but on the new version it does not allow it anymore. I
assume it is for security reasons, but it is essential for me that I can
allow a conection to port 5005 from the internal network to a external
server. I also don't want to modify the ipchain rules because I scared
I break  IP Masquerading and therefore the server's security. I would be
grateful if somebody can give me some hep on this subject.