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Internet sharing through Firewire and Ethernet ports Network
This may be obvious to some, but it wasn't for me, so maybe it will help somebody.

I was recently needing to share the Airport connection from my PowerBook with another Mac. I decided to use the Share Internet Connection function within Panther. (Go to Sharing Preference Pane, select Internet, select Connection Source and the interface you want to use, and click Start). This was easy enough to accomplish, but for some reason I did not understand, I could not get the second Mac to connect to the internet. The Mac did get an IP address from the laptop, but it would not connect to the internet.

A while later, I tried disabling Apple's Firewall: that did it. I assumed that, just like with every other service within the sharing pane, Apple would automatically open the port for the sharing internet service. Never assume anything. The last step that needed to be taken (and which is not mentioned anywhere in the documentation I found) was to open port 80 for web sharing. Since Apple only enables that port if Web Sharing is on, you have create a new rule in the Firewall to open Port 80.
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iBook Wireless Internet Sharing
Authored by: timstringer on Jan 17, '05 12:50:16PM

I have an iBook G4 with an Airport card. I've been trying to share my Internet service with a Windows XP computer that is connected to my iBook G4 via an Ethernet cable (I've tried both standard and cross-over cables). Unfortunately I haven't had any luck getting this to work. I doubled checked to make sure the firewall on my iBook G4 was disabled. Any suggestions?



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iBook Wireless Internet Sharing
Authored by: haumann on Jan 17, '05 03:26:13PM
I assume you have Windows Sharing turned on in the Sharing preferences?

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iBook Wireless Internet Sharing
Authored by: ld50 on Jan 18, '05 10:25:29AM

You don't need crossovers with an iBook.

I think if you don't configure the IP address of a network card be it Airport or Ethernet it'll default to 10.0.2.1 if a network is detected. Please correct me if I'm wrong on this.
So make sure you configure the IP addresses on both the win and mac correctly and make one of them look for default router of the other i.e the win machines default router is the IP address of the macs ethernet card.

Then turn on sharing to allow sharing of ethernet connected computers.

mich



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Internet sharing through Firewire and Ethernet ports
Authored by: mark hunte on Jan 17, '05 12:52:44PM

Thanks for that...

Er, so what about the firewire bit??

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mh



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Internet sharing through Firewire and Ethernet ports
Authored by: Smokin Jake on Jan 17, '05 05:47:17PM

FireWire connection is easy.
Network -. Show: Network Port Confurations, New Tab, Port: Built-in FireWire. tick, Select. Show Built-in Firewire. Configure either Manually or DHCP depending upon Server or Client setup respectively.

Server-- Sharing share your conection from anywhere to Built-in Firewire
Client -- In network note served address ie 198.162.2.2 because the Server address will then be 198.162.2.1 with the same subnet mask

For the firewall I like:

sudo ipfw add 3000 allow tcp from any to any via fw?
where ? is the firewire device indicated in netstat -nr



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Internet sharing through Firewire and Ethernet ports
Authored by: mark hunte on Jan 17, '05 07:40:03PM

Thanks, at some point I will want to use a firewire connection...

But I was more pointing out that the title of the post say's firewire
where it should say firewall.

I guess, now people will get what they expect with you firewire pointer

a typo I often make myself...

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mh



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Internet sharing through Firewire and Ethernet ports
Authored by: Gabroil on Mar 22, '05 07:03:28PM

Nope, there is no typo my friend. The title refers to the fact that it is possible to share your internet connection though both Ethernet AND Firewire connections, which means that the Firewire cable is used for the same purpose than an Ethernet cable.



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Internet sharing through Firewire and Ethernet ports
Authored by: _merlin on Jan 18, '05 04:17:13AM

So which port is required for Internet sharing? That depends on what you want to do. You have to open:

80 for web
25 for SMTP
22 for SSH
23 for telnet
21 and some high ports for FTP
143 for IMAP
...


It's a lot easier to use a proper firewall configuration utility (such as SunShield or BrickHouse) than mess with Apple's one when doing Internet sharing.



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