topic Re: Telnet Problem in Operating System - HP-UX

Telnet Problem

flecklin — Wed, 17 Mar 2004 11:11:33 GMT

In the syslog I find the following :
telnetd[22243]: getpid: peer died: Bad file number

This happens after a release change from UX 11.00 to UX 11.11.
Some clients have no problems and some connections produce the syslog entry as above.

Re: Telnet Problem

Geoff Wild — Wed, 17 Mar 2004 11:15:52 GMT

You may need to increase:

npty, nstrpty, nstrtels kernel parameters - what are they set to now?

Rgds...Geoff

Re: Telnet Problem

Steve Steel — Wed, 17 Mar 2004 11:18:55 GMT

Hi

Check the name resolution for the funny clients

nslookup name_of_machine
nslookup ip_of_machine

Should geive same result on UX

Looks like a timeout

Steve Steel

Re: Telnet Problem

flecklin — Wed, 17 Mar 2004 11:21:40 GMT

Hi
they all are set to 60, so more then plenty, since we just expect a few connections at the same time. But, we use a lot of ftp connections!?

Thanks
Beat

Re: Telnet Problem

Geno Church_1 — Wed, 17 Mar 2004 11:24:12 GMT

I would start by cleaning these two files (they could possibly be corrupted) This will have to be done via a reboot....bring the system
down to single user mode, cat /dev/null >/etc/utmp[x], and reboot

/etc/utmp and /etc/utmpx

If this doesn't fix it then I would reccommend looking to see what patch level you are on regarding telnetd and update accordingly.

Note:
A much better solution is to clear these files out at every reboot using
inittab and the boot process. Notice the position of the records in the utmp
file (at the head of the file).

# head -3 /etc/inittab

init:3:initdefault:
utm1::sysinit:> /etc/utmp # clear current logon accounting files
utm2::sysinit:> /etc/utmpx # clear current logon accounting files

*** Note: the launching of any application that relies upon the data in the
utmp or the utmpx files will also give inconsistent and/or incorrect results
with regard to information about user account, UID, etc. if there is corruption
in these files.

Regards,
Geno

Re: Telnet Problem

Geno Church_1 — Wed, 17 Mar 2004 11:27:44 GMT

Note:

Here are the patches for the appropriate OS levels.....

PATCHES:
[PHNE_24829/PACHRDME/English] s700_800 11.11 telnet kernel, telnetd(1M), telnet(1) patch

Patch [PHNE_26096/PACHRDME/English]
s700_800 11.00 telnet kernel and telnetd(1M) patch

Patch [PHNE_24821/PACHRDME/English] s700_800 10.20 telnetd(1M) cumulative patch
Patch [PHNE_13413/PACHRDME/English] s700_800 10.20 Telnet kernel cumulative patch

Re: Telnet Problem

Steve Steel — Wed, 17 Mar 2004 11:30:07 GMT

Hi

What patch level do you have

http://www.software.hp.com/SUPPORT_PLUS/

Suggest at least
http://www.software.hp.com/SUPPORT_PLUS/qpk.html

HP-UX 11iv1 Quality Pack (GOLDQPK11i) - Defect-fix patches for HP-UX 11iv1 on HP workstations and servers. (Rolls each June and December.) Available version: December 2003 (B.11.11.0312.4).

Steve Steel