topic Re: telnet problem in Operating System - HP-UX

telnet problem

Ong Chin Soon — Tue, 29 Oct 2002 06:07:16 GMT

Hi,
I have 2 machines, machine A and machine B. From machine A, I'm able to ping machine B using hostname and ip address but not able to telnet to machine B with the error " telnet : Unable to connect to remote hosts: Connection refused" . In machine B, I'm able to nslookup machine B and able to telnet to machine A. I've checked the /etc/hosts, /var/yp/secureservers, /var/adm/inetd.sec, /etc/resolv.conf, /etc/rc.config.d/namesvrs and nfsconf files but seems like everything is ok. I even plug out the network cable and try to ping machine B to make sure the ip is unique and confirm it is an unique ip. Any idea?

Re: telnet problem

Christian Gebhardt — Tue, 29 Oct 2002 06:18:25 GMT

Hi
do you have a line like this
telnet stream tcp nowait root /usr/lbin/telnetd telnetd
in /etc/inetd.conf of machine B ?

after inserting the line you have to reread the configfile with "inetd -c"
Chris

Re: telnet problem

T G Manikandan — Tue, 29 Oct 2002 06:33:12 GMT

checking whether the telnetd is enabled in the inetd.conf file is a valid point.

How are the machines placed.
Are the machines in the LAN.

Is there any firewall in between.
Is your port 25 opened for use?

Revert

Re: telnet problem

T G Manikandan — Tue, 29 Oct 2002 06:37:57 GMT

check whether the telnetd is running.
Make sure you have entries for telnetd in the inetd.conf file.

how are the machines placed?Are they in the local LAN

Is the port 23 open.

DO you have any files like /etc/hosts.allow and /etc/hosts.deny

Revert

Thanks

Re: telnet problem

Ong Chin Soon — Tue, 29 Oct 2002 06:40:18 GMT

Yes, I've the entry there in inetd.sec file.

Re: telnet problem

T G Manikandan — Tue, 29 Oct 2002 06:41:21 GMT

Re: telnet problem

Clemens van Everdingen — Tue, 29 Oct 2002 06:42:52 GMT

Hi,

Is inetd running at all ?

If so do you have a /etc/hosts.allow file ?
If so is the machine A in there on machine B ?

C.

Re: telnet problem

Christian Gebhardt — Tue, 29 Oct 2002 06:50:30 GMT

Hi
you have to check

/etc/inetd.conf

Chris

Re: telnet problem

Ong Chin Soon — Tue, 29 Oct 2002 06:54:02 GMT

Hi all,

I do not have any /etc/hosts.allow or hosts.deny file in machine B. Anyway, when I reboot the machine B, I 'm able to telnet to this machine. I don't know why but this resolve my problem. Thanks to everyone who give some so useful information. Thanks once again.

Rgds,
Chin Soon

Re: telnet problem

Clemens van Everdingen — Tue, 29 Oct 2002 07:02:03 GMT

Hi,

I guess your inetd was not running anymore.
Check your /var/adm/syslog/syslog.log file for any clues regarding telnet or inet.

C.