telnet / Local Flow Control Off

[Amarnath D]

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 am not able to do ftp also.

[Zeev Schultz]

Check that inetd is running there...
Check what ports are open and avail.
If you have some connection daemon running there - you can connect,if your only connections are through telnet/ftp/rlogin (meaning inetd) - would need to connect to console and restart inetd (/sbin/init.d/inetd start).

Another issue may be that connection to your IP is closed, IP filter etc.So try to connect from another IP.

Zeev

[Bharat Katkar]

You need to check whether telnetd is configured properly on HPUX server and network configuration on your server is Ok.

You first login to server thr' console and try following:

# telnet 127.0.0.1

U should see telnet prompt if it doesn't appear then telnetd is not working properly. In that case you have to check inetd.conf file for proper telnetd cofiguration.
Just go thr' and let me know what happens

[Amarnath D]

Hi Zeev,

inetd service is running & i have restarted the service also its not working

if i go through syslog,
"inetd[4069]: Going down on signal 11" error is logged.

[Amarnath D]

Hi Barath,

I am able to do telnet & login using loopback address & the same local ipaddress from the console.

[Bharat Katkar]

Yes Amarnath,
That means your telnet daemon is working fine and i doubt about the network related configuration.
Check your gateways address at both cleint and server end, Subnet mask and DNS configuration if you have one.
THis should solve your problem

[Zeev Schultz · Accepted solution]

Sig 11 is :

# define SIGSEGV 11 /* Segmentation violation */

PHCO_28650 should fix ...


See below:

This problem is caused by a corrupt /etc/hosts file. The corruption is
that the last line in the /etc/hosts file is not terminated with a "\n"
newline character.

# xd -bc /etc/hosts
0000240 1 \t \t c 2 0 0 1 \t \n 1 0 . 2 . 1
31 09 09 63 32 30 30 31 09 0a 31 30 2e 32 2e 31
0000250 . 2 \t s r v 2 0 0 2 \t \t c 2 0 0
2e 32 09 73 72 76 32 30 30 32 09 09 63 32 30 30
0000260 2
32
0000262

An indication of this can also be seen when opening the file using vi(1).

"/etc/hosts" [Incomplete last line] 19 lines, 522 characters


The corruption in the /etc/hosts file can be repaired by opening the
file using vi(1) and then re-saving it (:wq) This correctly inserts
the terminating "\n" at the end of the file:


# xd -bc /etc/hosts
0000240 1 \t \t c 2 0 0 1 \t \n 1 0 . 2 . 1
31 09 09 63 32 30 30 31 09 0a 31 30 2e 32 2e 31
0000250 . 2 \t s r v 2 0 0 2 \t \t c 2 0 0
2e 32 09 73 72 76 32 30 30 32 09 09 63 32 30 30
0000260 2 \n
32 0a
0000262

Although the /etc/hosts file is corrupt, it should not cause a
Segmentation Violation. This defect is resolved in the following
GR (General Release) Patch:

[PHCO_28605/PACHRDME/English]
s700_800 11.11 libnss_files cumulative patch

[Amarnath D]

Hi Zeev,

Excelent its working fine.
Thanks.