[CentOS] how to open a tcp port?

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>
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> > is telnetd installed?
>
Yes , it is (as the telnet to ip address on both machines can get through).


> > is the telnet deamon running on machine #1?
> >chkconfig telnet on
> Yes , it is .
>
>read as disable = yes.
>service xinetd restart

I tried to restart the daemon , but still telnet to port 4965 cannot get
through .
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