telnet / Local Flow Control Off

[Kevin_194]

Hi Experts,

I try to telnet a HP-UNIX-Client but I get this Error:

Trying...
Escape character is '^]'.
Local flow control off
Connection closed by foreign host.

I get the telnet on the other Clients, which hast the same NW-Area.

Thanks for advice
Kevin

[Karthik S S]

1. restart inetd on that client.

if that doesn't work,

2. From console of that client try running "insf -e" and telnet again.

-Karthik S S

[Mark Grant]

Sounds to me like you don't have telnet defined in /etc/inetd.conf. Have a look at it and see if you have ane entry that is not commented out that looks like this

telnet stream tcp nowait root /usr/lbin/telnetd telnetd

Also, check you are not being refused by /var/adm/inetd.sec

[Kevin_194]

Hi Karthink and Mark,

thanks for reply. It seems everything is OK, but still telnet dosen't work.

Kevin

[Karthik S S]

Are you able to do a ftp to that box? Do you see any error messages related to telnet in syslog.log??

-Karthik S S

[Kevin_194]

Hi Karthink,

FTP works.
Wenn I start a Telnet i get in syslog.log:

Cannot allocate pty


Kevin

[RAC_1]

What is yout npty kernel parameter setting? Check it as follows.

kmtune -lq npty. (You need to be root for this.) Compare this no. with following command.

ll /dev/pty/*|wc -l.

Anil

[Kevin_194]

Hi RAC,

I have the command kmtune not in this client:
HP-UX 10.20

ll /dev/pty/*|wc -l.
60

Kevin

[Fabio Ettore · Accepted solution]

Hi Kevin,

try the following command:

# insf -d pty -n 150

It will build new pty files and telnet already should work.
Then you should change npty and nstrpty to 150 and after reboot for kernel rebuilding

# rm /dev/pty/*
# rm /dev/ptym/*
# cd /dev
# insf -d pty -n 150

I hope this helps you.

Best regards,
Ettore

[Kevin_194]

Thank you all. It works.