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Dan Langille wrote:
> On 31 Jan 2007 at 16:43, Davide Bolcioni wrote:
> 
>> On Wednesday 31 January 2007 1:29 pm, Dan Langille wrote:
>>
>>>> Port conflicts are a known annoyance, but maybe it would help to
>>>> disseminate the information about Bacula usage, for example here:
>>>>
>>>>   http://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers
>>> The Bacula ports are listed there.
>> I stand corrected ... the Bacula ports are 9101-9103, not 9001-9003 as
>> in my original message. Unfortunately, these are also the port used by
>> HP printers.
>>
>>>> Should the need to introduce incompatible changes in the protocol
>>>> arise, which I guess would be Bacula 3.0, maybe a different set of
>>>> default ports could be considered ? HP networked printers are
>>>> fairly common.
>>> Bacula is registered with IANA, which is the definite source as well
>>> as listed in the protocol database:
>>>
>>>    http://www.isecom.info/cgi-local/protocoldb/browse.dsp
>>>
>>> Yes, I know it does not make much difference given that HP did and
>>> does not do the right thing.
>> I think we agree on this. Should the need arise for a protocol change,
>> however, picking another set of ports might be an option.
> 
> Picking another set of ports, even if we register them properly, 
> doesn't mean someone will not use them inappropriatly, as has 
> happened in this case.

Most HP printers only use 9100. This wouldn't really be a problem
anyway, as it really doesn't matter what ports a printer is listening
on. You're obviously not going to be running bacula on a printer (and
vv., probably not running any JetDirect-related service on your host),
so it's fairly irrelevant. Here, though, excerpted from IANA* is the
last word on the matter:

hp-pdl-datastr  9100/tcp    PDL Data Streaming Port
hp-pdl-datastr  9100/udp    PDL Data Streaming Port
#                           Shivaun Albright <[EMAIL PROTECTED]>
April 2002
#### The protocol name "pdl-datastream" is primarily registered for use
####
#### in DNS SRV records (RFC 2782). DNS SRV records allow a protocol to
run on ####
#### any port number, but the default port for this protocol is 9100 ####.
pdl-datastream  9100/tcp    Printer PDL Data Stream
pdl-datastream  9100/udp    Printer PDL Data Stream
#                           Stuart Cheshire <[EMAIL PROTECTED]>
September 2002
bacula-dir      9101/tcp    Bacula Director
bacula-dir      9101/udp    Bacula Director
bacula-fd       9102/tcp    Bacula File Daemon
bacula-fd       9102/udp    Bacula File Daemon
bacula-sd       9103/tcp    Bacula Storage Daemon
bacula-sd       9103/udp    Bacula Storage Daemon

...HP /did/ correctly register 9100 and that's all my printers listen on:

# telnet 10.4.64.70 9100
Trying...
Connected to 10.4.64.70.
Escape character is '^]'.

telnet> close
Connection closed.
# telnet 10.4.64.70 9101
Trying...
telnet: Unable to connect to remote host: Connection refused
# telnet 10.4.64.70 9102
Trying...
telnet: Unable to connect to remote host: Connection refused
# telnet 10.4.64.70 9103
Trying...
telnet: Unable to connect to remote host: Connection refused

You /can/ use 910x if you want for additional queues on one printer (I
guess if you have a fancier device), but this is just to keep the ports
near each other on the device. I haven't seen anyplace where HP
necessarily recommends using them, and they are not required for normal
operation of a printer.

So, I guess in summation, "Nothing to see here," or "What's the problem?"

*IANA port list: http://www.iana.org/assignments/port-numbers

- --
 ---- _  _ _  _ ___  _  _  _
 |Y#| |  | |\/| |  \ |\ |  | |Ryan Novosielski - Systems Programmer III
 |$&| |__| |  | |__/ | \| _| |[EMAIL PROTECTED] - 973/972.0922 (2-0922)
 \__/ Univ. of Med. and Dent.|IST/AST - NJMS Medical Science Bldg - C630
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