[CentOS] Remote print problem -- LPD, IPP and other standard printer ports
Todd Cary
todd at aristesoftware.com
Thu Dec 29 05:53:39 UTC 2005
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.
Todd
Bryan J. Smith wrote:
> Todd Cary <todd at aristesoftware.com> wrote:
>
>> 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
>>
> wireless
>
>> connection. Can your suggestion be implemented in this
>> environment?
>>
>
> Yes. Line Printer Daemon (LPD) is a well-established, legacy
> standard. It uses port 515 and is governed by IETF RFC1179:
>
> http://www.ietf.org/rfc/rfc1179.txt
>
> The new IETF standard is the Internet Printing Protocol
> (IPP). It uses port 631 (both clear and SSL) and is governed
> by IETF RFC2910:
> http://www.ietf.org/rfc/rfc2910.txt
>
> 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.
>
>
>
--
Ariste Software
2200 D Street Ext
Petaluma, CA 94952
(707) 773-4523
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