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I have most ports closed on my router except the obvious (POP, SMTP,
FTP, Interbase, SQL Server, MySQL and VNC). Could I have a port closed
that CUPS needs? I have identical problems with Linux (RHE) and Mac
Tiger.<br>
<br>
Todd<br>
<br>
Bryan J. Smith wrote:
<blockquote
cite="mid20051229005942.11537.qmail@web34101.mail.mud.yahoo.com"
type="cite">
<pre wrap="">Todd Cary <a class="moz-txt-link-rfc2396E" href="mailto:todd@aristesoftware.com"><todd@aristesoftware.com></a> wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Byron -
I got my wife a Mac (she has only been asking for one for
three years): iBook G4. Well her printer is hooked up to
a PC and she likes to roam around the house with the
</pre>
</blockquote>
<pre wrap=""><!---->wireless
</pre>
<blockquote type="cite">
<pre wrap="">connection. Can your suggestion be implemented in this
environment?
</pre>
</blockquote>
<pre wrap=""><!---->
Yes. Line Printer Daemon (LPD) is a well-established, legacy
standard. It uses port 515 and is governed by IETF RFC1179:
<a class="moz-txt-link-freetext" href="http://www.ietf.org/rfc/rfc1179.txt">http://www.ietf.org/rfc/rfc1179.txt</a>
The new IETF standard is the Internet Printing Protocol
(IPP). It uses port 631 (both clear and SSL) and is governed
by IETF RFC2910:
<a class="moz-txt-link-freetext" href="http://www.ietf.org/rfc/rfc2910.txt">http://www.ietf.org/rfc/rfc2910.txt</a>
Another port to be aware of is port 9100, commonly referred
to by it's vendor-centric names like a "HP JetDirect" port.
The technical name is the [HP] Page Description Language
datastream (PDL-datastream) port. Microsoft calls it a
"TCP/IP port", and you set it up as a local port, which maps
back to the IP address/port.
BSD/SysV UNIX LPD, LPR and LPRng offer LPD services.
CUPS offers IPP by default, and it can also offer LPD
services.
CUPS, as a client, can also use other methods including LPD,
IPP, SMB, PDL-datastream, etc...
CUPS also offers a replacement spooler for NT/2000/XP that
radically simplifies/centralizes administration for Windows
clients.
Windows Servers can offer SMB and LPD, and newer versions can
offer IPP services. Windows NT/2000 clients can use SMB, LPD
and PDL-datastream, with XP adding IPP. For IPP, LPD and
PDL-datastream, you set it up as a "local port."
Macs can also use LPD and PDL-datastream, with newer MacOS X
releases supporting IPP.
</pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Ariste Software
2200 D Street Ext
Petaluma, CA 94952
(707) 773-4523
</pre>
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