Actually, it's much simpler than I thought.

The problem was that port 515 was not opened up on the firewall (I thought
port 9100 was the only one needed).

After that, the firewall keeps track of your print session, and no NAT or
other fun stuff is needed.

I was now able to print directly to the printer from anywhere.

The other problem I had with my AS400 not being able to print to it, was
that (this is really so stupid that I overlooked it at first) there was no
default gateway setup on the AS400, and therefore no route to the printer
either.

But, it is all working now, so 'ho ho ho and a bottle of rum'.

Thanks for all the replies.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 Ole Drews Jensen
 Systems Network Manager
 CCNA, MCSE, MCP+I
 RWR Enterprises, Inc.
 [EMAIL PROTECTED]
 http://www.CiscoKing.com
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 NEED A JOB ???
 http://www.oledrews.com/job
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


Ole


-----Original Message-----
From: Sudarshan NChari [mailto:[EMAIL PROTECTED]]
Sent: Monday, February 05, 2001 12:33 PM
To: 'Ole Drews Jensen'; '[EMAIL PROTECTED]'
Subject: RE: TCP/IP print through firewall


Hi,

I think, you would doing a NAT in this case and your packets to the
printer would already be going as a public IP address. So the printer
would be knowing where to send the responses back and you wont be
needing another NAT.

BRgds
Sudarshan

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Ole Drews Jensen
Sent: Friday, February 02, 2001 5:10 PM
To: '[EMAIL PROTECTED]'
Subject: TCP/IP print through firewall


All this reading about routed protocols and routing protocols makes you
think you know it all, until you are in front of a new funny situation.
I am
sure that someone out there can explain this to me real quick and easy,
so
here's my question.

We have a LAN with a private network 10.0.0.0, and from a workstation I
need
to print to a TCP/IP ready printer at another company, which has a
public
address 100.100.100.100 (this is ofcourse not the real one).

My computer should not have any problems getting routed to that printer
via
it's default gateway (the firewall), via the firewalls default gateway
(the
router), via the routers default gateway (our isp), and so on.

BUT, the computer needs a response from the printer so it knows that
it's
there and ready, but when the printer tries to reply to my computer
10.1.2.3, it will be dropped by it's default gateway (the other
company's
router), because the 10.0.0.0 network is not routable through the
Internet.

I'm I right, and what would be the thing to do here?

Would I HAVE to do a NAT on my workstation so the printer can reply back
that way?

Thanks for any comments on this,

Ole

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 Ole Drews Jensen
 Systems Network Manager
 CCNA, MCSE, MCP+I
 RWR Enterprises, Inc.
 [EMAIL PROTECTED]
 http://www.CiscoKing.com
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 NEED A JOB ???
 http://www.oledrews.com/job
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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