Re: Disable unuse port

From: Kasper Dupont (kasperd@daimi.au.dk)
Date: 01/21/03 

From: Kasper Dupont <kasperd@daimi.au.dk>
Date: Tue, 21 Jan 2003 07:07:28 +0100

wanto wrote:
>
> Folks,
>
> I am using RH8. In order to check the server security level, i used SuperScan
> to check the "Listen" port.
> Finally, I found the following:
>
> 22 [ssh]
> 23 [telnet]
> 25 [smtp]
> 53 [domain]
> 80 [http]
> 110 [pop3]
> 111 [sunrpc]
> 8000 [irdmi]
>
> Except 110, 111 & 8000, the others are needed...
> Therefore, I tried to disable those 3 ports.

Good choice.

> How can i do it?

Disable the service listening on the port. On RH you can
disable a service for the current session by typing:

   service name stop

And you can prevent it from being started at next boot
by typing:

   chkconfig name off

I'm not sure exactly which services are listening on those
ports, but I guess it is sendmail on port 110. As root you
can get the name of the programs by typing:

   netstat -tupl

> Is it related to /etc/services ?

Nope. Don't change /etc/services.

> Thx all you kindly folks!
>
> wanto 

-- 
Kasper Dupont -- der bruger for meget tid på usenet.
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