Re: FQDN, hostname and telnet
- From: Charles Curley <charlescurley@xxxxxxxxxxxxxxxxx>
- Date: Mon, 21 Aug 2006 17:17:01 -0600
On Mon, Aug 21, 2006 at 03:08:44PM -0700, Patrick B. O'Brien wrote:
/etc/hosts should say:
127.0.0.1 geidiprime.servebeer.com
No, it should not. 127.0.0.1 should always be at least:
127.0.0.1 localhost.localdomain localhost
Otherwise certain long-standing Unix traditions will break, with dire
consequences.
You can add other things to that line, but it's not a good idea.
Instead add a new line with your NIC's IP address pointing to your
FQDN, followed by the hostname. e.g:
192.168.1.4 geidiprime.servebeer.com geidiprime
The FQDN must agree exactly with the host name as shown in
/etc/sysconfig/network. The OP's list of his /etc/hosts showed that it
was different: "servebeer.com geidiprime localhost". So
"servebeer.com", "geidiprime", or "localhost" should have worked, but
not geidiprime.servebeer.com, which is what he tried.
However, domain name resolution is not the only problem. When the OP
did "telnet geidiprime", the host name was successfully resolved. The
connection was refused, which suggests that the telnet server is not
set up correctly. Possibly it needs to be turned on for xinetd's
benefit. Or possibly it is only listening on the NIC, not on the
loopback device (127.0.0.1).
-----Original Message-----
From: fedora-list-bounces@xxxxxxxxxx
[mailto:fedora-list-bounces@xxxxxxxxxx] On Behalf Of
hawat.thufir@xxxxxxxxx
Sent: Monday, August 21, 2006 3:04 PM
To: fedora-list@xxxxxxxxxx
Subject: FQDN, hostname and telnet
Why can't I telnet to "geidiprime.servebeer.com", which is my FQDN?
[thufir@geidiprime ~]$
[thufir@geidiprime ~]$ telnet localhost nntp
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
200 Leafnode NNTP Daemon, version 1.11.5 running at servebeer.com (my
fqdn:
geidiprime.servebeer.com)
^]
telnet> quit
Connection closed.
[thufir@geidiprime ~]$ telnet geidiprime
Trying 127.0.0.1...
telnet: connect to address 127.0.0.1: Connection refused
[thufir@geidiprime ~]$ telnet geidiprime.servebeer.com
telnet: geidiprime.servebeer.com: Name or service not known
geidiprime.servebeer.com: Unknown host
[thufir@geidiprime ~]$ cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 servebeer.com geidiprime localhost
[thufir@geidiprime ~]$ cat /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=geidiprime.servebeer.com
[thufir@geidiprime ~]$ date
Mon Aug 21 23:02:17 IST 2006
[thufir@geidiprime ~]$
thanks,
Thufir
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