Unable to telnet into HP-UX 11iv3

[arkie]

Hi

We are unable to telnet into an HP-UX 11iv3 on rx2620 from LAN. The message says:-

telnetd: Telnet device drivers missing: No such device

Connection to host lost.

Locally the output of `telnet localhost` is:-

Trying...
Connected to localhost.
Escape character is '^]'.
telnetd: Telnet device drivers missing: No such device
Local flow control off
Connection closed by foreign host.

Can anyone pls help

Thanks!

[Kapil Jha]

My server has


# ls -lrt|grep tel
dr-xr-xr-x 2 bin bin 96 Sep 9 2004 telnet
crw-rw-rw- 1 root sys 72 0x000060 Dec 11 2006 telnetm

so I suppose you should have this file.

BR,
Kapil+

[Johnson Punniyalingam · Accepted solution]

can you try the below ?

rm /dev/pts/*
rm /dev/pty/*
then
cd /dev
insf -e
insf -d telm
insf -d tels

Also check the kernel parameters


npty nstrpty nstrtel

once you problem has been fixed, Hope you need look for "telnet" patches

[arkie]

Hi Kapil

Yes, its there:-

root@te02smx:/dev>ls -lrt|grep tel
dr-xr-xr-x 2 bin bin 96 Oct 20 2007 telnet
crw-rw-rw- 1 root sys 72 0x000068 Mar 27 2009 telnetm

Also grepped to see if the service is listening:-

root@te02smx:/dev>netstat -an |grep LISTEN |grep 23
tcp 0 0 *.2301 *.* LISTEN
tcp 0 0 *.23 *.* LISTEN

Checked the /etc/inetd.conf & /etc/services. Tried with `inetd -c` also. But still its not working

[arkie]

Hi Johnson,

Is it advisable to do so? Because, the server is live.

Further, how can we check the kernel parameters: npty nstrpty nstrtel?

And where to look for the telnet patches?

[Jupinder Bedi]

try with insf -e

[Kapil Jha]

Please install PHNE_25913 or better PHNE_34015.

Please read instructions for this also.

BR,
Kapil+

[arkie]

Thanks Johnson,

That really worked. I have not changed the kernel parameter values for npty, nstrpty & nstrtel. All of them are 60 (default).

But, I couldn't really figure out what really happened with the old device files

Thanks all for your time & support

[T. M. Louah]

Typical corruption of device files, insf re-reates those.

t#