LPR Printing over Internet

  • Thread starter Thread starter otto
  • Start date Start date
O

otto

I'm having difficulty printing LPR from the Internet to an ISA published
server.

I'm using an ISA publishing rule to map lpr requests on port 515 with
secondary ports 721-731 to a Xerox (SUN OS 5.8) print server. ISA shows it
in the firewall monitoring sessions as a firewall client - same as my other
published servers. The ISA packet filter logs show ALLOWED ack and syn tcp
flags, param #2 515, param #1 731.

If I print to the printer from the ISA server, snoop shows ISA used source
port 721 and destination port (PRINTER) 515. When I print from the Internet
I see no activity at all. It seems like the ISA server doesn't relay the
request to the published server which in turn results in my general printer
error at the client. I'm pretty sure I have the publishing rule working
because it does work for telnet publishing.

I have followed the steps in KB:306071 to publish an LPR printer but it just
doesn't seem to work. Do I need to open addl ports or what? Has anyone
done this before?

Thanks for any help - I've been on this for a week - losing my hair by my
own hand!
 
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