Hi,
I try to telnet to server:

[root@myserver ~]# telnet xx.xxx.1.72 1521
Trying xx.xxx.1.72...
telnet: connect to address xx.xxx.1.72: Connection refused
telnet: Unable to connect to remote host: Connection refused

iptables is off:

[root@myserver ~]# service iptables status
Firewall is stopped.
[root@myserver ~]#

And I have edit /etc/xinetd.d/telnetd and changed disable to no and restart "/etc/rc.d/init.d/xinetd restart".

[root@myserver ~]# netstat --numeric-ports -l | grep 1521
tcp 0 0 myserver.krb5.dax.net:1521 *:* LISTEN
[root@myserver ~]#

any idia?

Kind Regards
Me

Are you telnet'ing to the same host you are on? For two hosts, there is the local firewall, any intermediate firewall, any remote firewall, and the listener there. Does the IP exactly match the host name on both client and server DNS/hosts (usually you listen on 0.0.0.0 for all IPs, like 127.0.0.1 even if one NIC)?

check tcpwrappers hosts.deny/allow files.

Usually if someone is denying, they are logging . . . .

Try telnet to some other common ports in that server and check whether able to connect.