topic Re: port forwarding problem in Operating System - HP-UX

port forwarding problem

Klaus Claassen — Mon, 07 Oct 2002 14:04:56 GMT

Hi,

on a HP-UX 11.0 machine, I have an application
using port "A", let's say port number 2000.
I'd like to forward this port to another
port on the same computer, e.g. port number 3000.

It can be done with ssh, e.g.
ssh -f -L 3000:localhost:2000 localhost tail -f /dev/null

But is it possible to achieve this
without using ssh?
Does it matter if port number "A" is
less than 1024 ?

Regards,
Klaus Claassen

Re: port forwarding problem

Jordan Bean — Mon, 07 Oct 2002 19:28:56 GMT

You might experiment using inetd and telnet.

In /etc/services:
portfwd 2000/tcp

In /etc/inetd.conf:
portfwd stream nowait nobody /usr/bin/telnet portwd -8 localhost 3000

If it fails, then it won't run as nobody. Try again another non-root, non-system account.

I wouldn't recommend this, but it should work.

Re: port forwarding problem

Jordan Bean — Tue, 08 Oct 2002 04:13:42 GMT

NO! No points. I'm an idiot. Guess what I forgot: Telnet kicks back the message "Connecting..." upon invocation. (Gosh, the things you forget being an ssh user.)

Re: port forwarding problem

U.SivaKumar_2 — Tue, 08 Oct 2002 04:45:11 GMT

Hi,
It is not possible using normal inetd . I would
suggest you to use rinetd .
You can read about it and download from this link

http://www.boutell.com/rinetd/

regards,
U.SivaKumar

Re: port forwarding problem

U.SivaKumar_2 — Tue, 08 Oct 2002 04:47:41 GMT

hi,
You can't get the source of rinetd compiled , you can get pynetd (python script) for this
purpose.

regards,
U.SivaKumar

Re: port forwarding problem

Andrew Cowan — Tue, 08 Oct 2002 07:29:36 GMT

You could try this product: http://www.winton.org.uk/zebedee/

I've never used it but have heard good things about it.

Good luck,
Andrew

Re: port forwarding problem

Lal Samuel Varghese — Wed, 15 Dec 2004 07:08:51 GMT

Hi Klaus,

This is actually a reply to your question about using adb to find the amount of physical memory on Itanium systems. I couldn't reply to that thread (http://forums.itrc.hp.com/service/forums/questionanswer.do?threadId=762540) as it is already closed. The adb command did not work as the variable is 8 bytes long and the D format prints only 4 bytes.

In this case it is better to use adb without the -o option. The following command will give you the output you want:

echo phys_mem_pages/jd|adb /stand/vmunix /dev/kmem

Regards,
Lal

Re: port forwarding problem

Klaus Claassen — Wed, 15 Dec 2004 07:20:34 GMT

Hi Lal !

I reopened the "memory question" thread,
please re-post your answer there,
it will certainly be helpful for other
readers, too. (I'll award the points there)

Thanks,
Klaus