another port for 515

[Ace]

We have to send spooled output to a PC on another IP address (you know
PDFing ?) The AS400 is sending by default over port 515. Now the receiver
which is on another IP-address is getting weird commands from the other side
of the world and it's stopping the PDF-processor.

We like to have the AS400 use another port for LPD just for 1 outputq.
Anyone out there who can tell us how to do that.
Thanks
Ace.

[CRPence]

Whatever is "weird" may require more investigation and more explicit
description for any good assistance because the port 515 would appear to
be correct; i.e. the spool data is sent to the listening port for LPD,
which is 515.

_i KB Reference #:​ 26754527 ​i_
http://www-01.ibm.com/support/docview.wss?uid=nas1995ddeb518a024d886256bac005113e2
"TCP/IP Ports Used by Line Printer Requester (LPR) in OS/400 or i5/OS

Technote

The operating system uses the Line Printer Requester (LPR) TCP-based
protocol when using the Send TCP/IP Spooled File (SNDTCPSPLF or LPR )
commands or when a Remote Output Queue (RMTOUTQ) has been configured
with the Connection type (CNNTYPE) parameter set to *IP. LPR on an IBM
System i system always uses destination port 515 for sending TCP/IP
frames to the remote device or remote system (for example, an IBM
Infoprint 1140 printer or another iSeries family system) and uses a
source port between 256 and 1024 for receiving TCP/IP frames from the
remote device or remote system.

According to the Internet Engineering Task Force (IETF) Web site,
www.ietf.org/ , RFC 1179 Line Printer Daemon Protocol, section 3.1
(Message formats) states that:

LPR is a TCP-based protocol. The port on which
a line printer daemon listens is 515. ...
"

--
Regards, Chuck

["René H. Hartman"]

Why not consider setting up a firewall on the receiving address that
only allows traffic to port 515 which originates from your AS400?
Eliminate the source, rather than circumventing it.

[Ace]

We did. The problem is over.
Thanks

Ace.


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