telnet on local LAN question

[Paul Allen Newell]

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On 8/15/2011 11:09 PM, James Hogarth wrote:
>
> Sent from Android mobile
>
> On Aug 16, 2011 6:04 AM, "Paul Allen Newell" <pnewell at cs.cmu.edu 
> <mailto:pnewell at cs.cmu.edu>> wrote:
> > Greetings
> >
> > I am trying to figure out how to get communication between my F14 boxes
> > on a local wired LAN. The best test case I can come up with to prove
> > that I don't know what I am doing wrong is telnet.
> >
> > Each machine has a /etc/hosts looking like (where <name> is the machine
> > name and <other> is any other machine:
> > +++
> > 127.0.0.1 <name> localhost.localdomain localhost
> > <name>.localdomain localhost4
> > ::1 <name> localhost6.localdomain6 localhost6 <name>.localdomain
> >
> > 192.168.2.10 <other1>.localdomain <other1>
> > 192.168.2.11 <other2>.localdomain <other2>
> > 192.168.2.12 <other3>.localdomain <other3>
> > +++
> >
> > For the other machines, its name is removed in the 192.168.10.x list 
> and
> > 192.168.2.13 <name>.localdomain <name> is added
> >
> > Each machines has a /etc/sysconfig/network of:
> > +++
> > NETWORKING=yes
> > HOSTNAME=<name>.localdomain
> > NTPSERVERARGS=iburst
> > +++
> >
> > I didn't see any reference to <name> or <otherX> in
> > /etc/sysconfig/network-scripts/ifcfg-eth0, so I am not including it ...
> > if there should be something, I'd love to know! I can't think of any
> > other place for <otherX> or <otherX>.localdomain, but that's out of
> > ignorance as I haven't encountered this sort of problem before.
> >
> > The splash screen for all machines is <name>.localdomain. The command
> > hostname returns <name>.localdomain.
> >
> > Ping works great between all of the machines for both <otherX> and
> > <otherX>.localdomain, lists the 192.168.10.x address like a happy 
> camper
> > should
> >
> > But a telnet <otherX> 25 or telnet <otherX>.localdomain 25 fails.
> >
> > I can't tell if I need to add information about the other machines
> > somewhere else on <name> or if they really are known but something is
> > blocking it.
> >
> > I also can't use mail/mailx between the machines. I noticed that
> > mail/mailx always resolves <otherX> to <otherX>.localdomain (and 
> sending
> > to self is resolved to <name>.localdomain), so I changed network to use
> > the localdomain suffix and added it in /etc/hosts before the 
> instance of
> > <other>. Neither telnet or mail/mailx worked with just <name>, so I am
> > pretty certain that I didn't break anything by changing <name> to
> > <name>.localdomain.
> >
> > Some machines were already using hostname of <name>.localdomain and my
> > records aren't good enough to know how I specified the name of the
> > machine when I installed F14 (it never was an issue as everything 
> worked
> > until I tested mail/mailx and telnet so I never documented exactly 
> how I
> > should set machine name on install).
> >
> > It seems that the telnet problem is a simpler one than the mail/mailx
> > and if I can at least get telnet working, then I am closer to getting
> > mail/mailx working.
> >
> > Any suggestions?
> > Thanks in advance,
> > Paul
> >
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