Can't telnet or FTP to an Oracle Enterprise Linux 5 server

[Jan Shu]

Hi All,

I just installed a new Oracle Enterprise Linux 5 server njlxdv22 which is able to telnet to other HPUX servers. But when I try to telnet or FTP to njlxdv22 from my laptop, I got below error messages. How to fix this?

H:\>telnet njlxdv22
Connecting To njlxdv22...Could not open connection to the host, on port 23: Conn
ect failed

H:\>ftp njlxdv22
> ftp: connect :Unknown error number
ftp>

Regards,
Jan Shu

[BW Moll]

have you tried ssh or sftp ?

[Robert-Jan Goossens_1]

Hi Jan,

Your laptop can not resolve the ip of your server. You will need to add the ip/name into your dns database or your local host file C:\windows/system32/drivers/etc/hosts.

regards,
Robert-Jan

[Jan Shu]

Hi BW,

I would like to have the telnet and ftp to work on this new server. I don't use sftp or ssh. Thanks.

Jan

[Jan Shu]

Hi Robert,

I am able to ping this server so it isn't a name resolution error. Thanks.

Jan

[BW Moll]

Is there a firewall between you and the server?

Is telnet enabled on the server?

Can you telnet into another server, then telnet into the server you wish to connect to?

[Jan Shu]

Hi BW,

I think the firewall is disabled on the Linux server. But I am not sure how to check it. I am able to telnet to other servers from this linux server, but I am not able to telnet to linux server from any computers or ux servers.

Jan

[Jan Shu]

I moved this thread to the LINUX system administration. Thanks.

Regards,
Jan

[Paul Sperry]

The telnet daemon is no longer usually installed by default. so people can't telnet to their newly installed Linux system.

The first task is to install telnetd. The "telnet" client is installed by default; the telntd daemon is not.

[Jan Shu]

Hi Paul,

Thanks for the update. Can you please go to the LINUX section and enter your update again so I can assign points for you. Thanks.

Jan