[CentOS] how to open a tcp port?
Michel van Deventer
michel at van.deventer.cx
Wed Mar 3 13:05:59 UTC 2010
> On Wed, Mar 3, 2010 at 6:20 PM, Rajagopal Swaminathan
> <raju.rajsand at gmail.com> wrote:
>> On Wed, Mar 3, 2010 at 6:10 PM, hadi motamedi <motamedi24 at gmail.com>
>> is telnetd installed?
> # yum install telnet-server telnet
>> is the telnet deamon running on machine #1?
> chkconfig telnet on
> The configuration file for telnet is /etc/xinetd.d/telnet. To enable
> telnet server you need to open this file and make sure disable = no
> read as disable = yes.
> service xinetd restart
> /etc/init.d/xinetd restart
Why are you telling him to install a telnetd ??
He's trying to connect to a port using telnet (client) to see if a server
is listening on it.
I doubt by the way if a missing package is the issue.
Please check first if there is a server listening on tcp 4965
netstat -ltpn | grep 4965
the output should show you which application is listening on tcp/4965
if there no output, there's nothing listening and you should fix your
application first (maybe it's not started ?).
If there's something listening on tcp/4965 you can try to use
telnet localhost 4965
to see if you can connect
telnet ip.nu.mb.er 4965
if the application is only listening on a single ip.
iptables -L -vnx | grep 4965
to see if theres a firewall rule blocking it (or accepting) if you have
the firewall active (do you?)
Please let us knwo the outcome of these commands
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