[CentOS] how to open a tcp port?

[hadi motamedi]

On Wed, Mar 3, 2010 at 11:20 AM, Eero Volotinen <eero.volotinen at iki.fi>wrote:

> 2010/3/3 Samuel Contesse <samuel.contesse at softcomponent.ch>:
> > Hi,
> >
> > Assumed that iptables has been disabled during installation,
> > /etc/sysconfig/iptables might not be present on your system. Can you
> print
> > iptables running configuration out by using:
> >
> > iptables –L
> >
> > Sam
>
> if iptables is not enabled, then all ports are already open ;)
>
> --
> Eero
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But when I trying to reach this debug port ,as :
#telnet 172.16.17.132 4965
It cannot get through . So if the port is open , why I cannot reach it ?
Thank you
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