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Use one fax modem on more than one Mac System
Recently, I discovered that you can use a fax modem on one Mac remotely from other Macs on the network. I have a G5 connected to the phone line, and use my PowerBook via AirPort to use that fax. First you should rename the modem on the server side in the Network preferences pane (Show: Network Port Configurations, then select the modem and click Edit). They are all named 'Internal Modem' (Internes Modem for German users like me) by default, and so it is not easy to see whether you have your local modem or the remote one.

Second, you should enable SMB sharing. I think this is called Windows Sharing in the Sharing preferences pane. I am not sure how my PowerBook finds the remote modem. It could be the SMB service, or the Rendezvous, but I am not sure about that. Now we come to the fun part.

Open the print dialog (File: Print or Command-P) and click the Fax button. In the following dialog, you can enter the fax numbers, dial prefix etc., as usual. In the Modem drop-down menu, you will see a Shared modem entry. I see the remote modem there and can select it for faxing. The rest is the same as if you are using a direct line.

[robg adds: A friend (thanks Jacco!) pointed out that this capability comes from efax -- it's not reliant on any of OS X's sharing services, so you can ignore the bit above about SMB. (I tested it with SMB, printer, and personal sharing all disabled, and it still worked fine.) I also couldn't see my newly-customized fax machine name from the PowerBook, even after restarting the PowerBook and doing a sudo kill -HUP [efax_PID] on the desktop machine ... I'm not sure what step I might be missing to see the customized name...]
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Use one fax modem on more than one Mac
Authored by: antoine.leygonie on Feb 08, '05 12:18:10PM

I don't see the pb (The point is that a modem is considered as a printing device) This is very well documented by Apple. All you need is to
- turn on the Print Sharing in our Sharing services
- set the "fax and print" preferences panel to "receive fax on this computer"
And that's it.

I use this for months with a 5 Mac LAN (some on Ethernet and some on Airport) without any pb.



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This works if you do this first...
Authored by: josephaw on Mar 11, '05 11:07:51AM

My G4 was acting like a Fax Receiving Server, I wanted my G5 to send faxes thru this, following instructions here I was unable to find it, even with print sharing turned on.
Then I finally figured it out, On the Mac with the fax, create a document and click print and then FAX.
This will create a FAX Printer, rename this Fax printer to something like Fax Server.
Now you can cancel this fax test.
Now go to the other Mac that wishes to connect and open Print Setup Untility, Go to the VIEW menu and you should see the Shared Faxes, give that Fax Server fax a click and your done.
Now when you fax you should be able to send it thru to the other computer.



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This works if you do this first...
Authored by: eugene.y.lim on Oct 03, '05 04:07:51PM

hi
I followed the instruction and set up one iMAC as faxserver and 4 ohter iMacs as clients. The problem is that the modem does not hang up and hold the line once in a while. has anyone experienced this?
thanks



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Use one fax modem on more than one Mac
Authored by: bjmorgan on Feb 08, '05 12:18:40PM

Great tip! Now I can plug my iMac in and have it act as a the Fax station instead of tying my PB down. Never thought to do that.



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Security hole?
Authored by: ekc on Feb 08, '05 12:18:56PM
robg wrote:
(I tested it with SMB, printer, and personal sharing all disabled, and it still worked fine.)
Oh dear, I was under the impression that feature is disabled as long as printer sharing is off. As it is, I am concerned about people within Airport range sending long-distance faxes on my tab. I like this idea of a shared fax, but the apparent lack of any form of authentication is just scary.

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Security hole?
Authored by: peragrin on Feb 08, '05 01:37:10PM

Where is the security on your airport. Though your concern is valid, it's just something else people can do on your internal network. They can also sniff your traffic, looking for passwords.

All airports should be secured. Even WEP which can be broken in short order is better than nothing. Airport extreme, and express both support WPA through an firmware update a couple of months back. It's stronger than WEP though it to can be broken.

---
I thought once I was found but it was only a dream



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Security hole?
Authored by: ekc on Feb 08, '05 04:37:24PM
I wish I had more faith in wireless security, but WEP is something of a joke, and since I have a mixture of newer and older hardware, I am pretty much stuck with it. WPA may be much stronger, but you are still placing all your faith in a single password to secure the entire LAN.

I would much rather see that second level of protection. In this day and age, even services restricted to a local network need to be properly authenticated. Thankfully, most of them already are. Even AppleShare no longer sends passwords in the clear. Printer and fax sharing are among the few hold-outs. While the former has some prank potential, the latter is downright dangerous.

I have file a bug report with Apple over this, and it remains to be seen whether they add authentication under Tiger. If they can do it for iTunes music sharing (as if I care that the neighbours are tuning into my playlists), surely they can do for printer/fax sharing too.

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Security hole?
Authored by: basskiwi on Feb 09, '05 07:30:37AM

Well you could use the built in radius auth client in the airport basestations... There's even a nice interface for setting it up <A HREF="http://www.carpestellarem.com/Products/StellarRADIUS.php">http://www.carpestellarem.com/Products/StellarRADIUS.php</A>

That way you can give each of your users a certificate and password combination to get onto your network - EAP-TTLS



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Use one fax modem on more than one Mac
Authored by: ekc on Feb 09, '05 11:47:08AM

Interesting. I'll look into that. Thanks!



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Use one fax modem on more than one Mac
Authored by: mjmtaiwan on Sep 07, '05 10:13:36PM

Well... I like the hint but after applying it I no longer have the "Sharing" pane in my System Preferences window. What's going on with that?

---
Old Time Radio from the 30s, 40s and 50s



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Use one fax modem on more than one Mac
Authored by: rameeti on Nov 17, '07 03:12:03PM

Help! :-)

I started this tip and now I'm stuck. I'm working in Tiger 10.4.11

I first confirmed that my fax was working. I called the number and the internal fax picked up. Then I went to Network and renamed the Internal Model to Office Mac FAX. Now when I go to Printers & Fax, Set Up Fax modem, I do not see any Fax listed in the fax list. Before it listed Internal Modem but now nothing. I tried renaming the modem back to Internal Modem but it still does not show. Reset Parameter RAM and no change.

Any ideas?



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