File sharing between Big Sur and Leopard

[eyoungren]

The MP is connected via Ethernet to the Broadband Router on Ethernet 1.
So I would connect the G5 via Ethernet 2.

Hmmmmm…I've never done this before.

Try this. On the G5, assign it a static IP address that your router has NOT assigned to any other device (again assuming you are using a 192.168.0.x subnet). If your subnet is different, say 10.0.0.x, then use that with the appropriate subnet mask. Set the router as your router's actual address.

See if you can connect via Screen Sharing from the MP.

Note, I've never done this so I have no idea if it will work. If it doesn't, there's one more thing to try.

 

[doctor_dog]

Be aware there do exist routers with an option to disable peer-to-peer connectivity (it's usually called "client isolation" or something similar). In my experience most manufacturers dont' enable this by default (especially consumer oriented ones), but something to take note of.

I suggest trying the 'ping' command from terminal to ensure that there is logical connectivity between the two hosts. Ensure that you can ping from both machines, not just one (in other words, ping the static IP of the respective machine on each host). If you get a 'request timed out' on either test, you probably have a network issue.

 

[MarkC426]

Hmmmmm…I've never done this before.

Try this. On the G5, assign it a static IP address that your router has NOT assigned to any other device (again assuming you are using a 192.168.0.x subnet). If your subnet is different, say 10.0.0.x, then use that with the appropriate subnet mask. Set the router as your router's actual address.

See if you can connect via Screen Sharing from the MP.

Note, I've never done this so I have no idea if it will work. If it doesn't, there's one more thing to try.

Ok set this up, and with a bit of fiddling with Firewall etc, it worked.
But then after more messing about I can't get it back running....

It wouldn't work without the router address, but this disconnected my MP from being online....?

I do have Intego NetBarrier, so added the ip to the exceptions list.

 

[MarkC426]

I suggest trying the 'ping' command from terminal to ensure that there is logical connectivity between the two hosts. Ensure that you can ping from both machines, not just one (in other words, ping the static IP of the respective machine on each host). If you get a 'request timed out' on either test, you probably have a network issue.

Both machines now work with a Ping in Terminal, and when I open connect to server I can see the G5, but it fails to connect every time.

 

[MarkC426]

Ok update, I had to add it to NetBarrier as TCP & UDP, which now connects....
BUT have no internet connection on MP.

If I remove the router ip from the network setting (to G5) internet is back on, but sharing doesn't work.

 

[doctor_dog]

Ok update, I had to add it to NetBarrier as TCP & UDP, which now connects....
BUT have no internet connection on MP.

If I remove the router ip from the network setting (to G5) internet is back on, but sharing doesn't work.

Ah, sorry about that, I think I did you a bit of disservice going straight for the router as a possible culprit, I completely neglected software firewalls. Glad you got that sorted out. It's possible that NetBarrier is only allowing certain TCP/UDP ports after you whitelisted your machines to talk to each other. I don't recall off the top of my head, but it's possible that host discovery uses a different set of ports than the actual connection. As a test, see if everything works with NetBarrier temporarily disabled. If that works, then I'm betting it's a matter of allowing the right ports inside of the NetBarrier config.

There is a command line SMB/CIFS client that you can perhaps use in verbose mode to get more detail on what's going on and which ports are being used, but I cannot recall if it is available on Leopard. I'll do some digging.

One last note regarding your MP not being able to connect to the Internet. The Router IP cannot be left blank if you want normal Internet functionality. That field tells the OS where to send any traffic that isn't destined for your local network i.e. Internet-bound traffic. If you're unsure of what the Router IP address should be, switch your Ethernet configuration back to DHCP and copy the Router IP that gets assigned. Then you can go back to using a static IP on both your machines. My guess is NetBarrier is doing some stuff behind the scenes that is causing the mixup.

 

[PowerPC Punk]

Yeah, cool, i know, connectin´10.5 with 9.2,
plus 13.1 with 8.6.
They never made it easy, those aPPLe talker, but:
"ssh -oHostKeyAlgorithms=+ssh-dss you@yourmacip"
?????
Terminal, in 2023 ?
Apple, what a modern computer System.
-
Anyway, my workaround.

If Router, then;
They all should have an usb.
Plug an old hhd in there,
Turn of Firewall.
Get online.

Hope that helps. PPC Punk

 

[MarkC426]

One last note regarding your MP not being able to connect to the Internet. The Router IP cannot be left blank if you want normal Internet functionality. That field tells the OS where to send any traffic that isn't destined for your local network i.e. Internet-bound traffic. If you're unsure of what the Router IP address should be, switch your Ethernet configuration back to DHCP and copy the Router IP that gets assigned. Then you can go back to using a static IP on both your machines. My guess is NetBarrier is doing some stuff behind the scenes that is causing the mixup.

Thanks for your help....👍
What confuses me is, my normal settings are on Ethernet 1 with router ip set etc.
Ethernet 2 is just for the local connection, so why does it need the router ip in order to connect to G5....🤔

It's not the end of the world, as it was more of a nicety to now and again connect to my old Mac.
It is not a daily or even weekly thing.
I can manually switch between Eth 1+2 when required, and not be online.

Edit: turned off NetBarrier, but internet connection doesn't work on MP still.

 

[eyoungren]

The final thing to try is this.

Disconnect the G5 from the MP

Put Ethernet 2 back to DHCP or use the same settings you were using before all this.

On the MP, turn on Internet Sharing and set it for Ethernet 2.

Connect the G5.

The G5 should get an IP address from your MP. Try using that address for screen sharing.

 

[MarkC426]

I was just thinking, since I connect MP to internet with Ethernet 1, should Ethernet 2 not be the same ip address?
Am a bit reluctant to start fiddling again as it's 'pretty much working' for my use....😬

 

[eyoungren]

I was just thinking, since I connect MP to internet with Ethernet 1, should Ethernet 2 not be the same ip address?
Am a bit reluctant to start fiddling again as it's 'pretty much working' for my use....😬

You can't have two 'devices' on the same network with the same IP address. Unless there is some way to use the MAC address of Ethernet 2 - in which case you're no longer dealing with IP addresses.

I know you said you wanted to connect the MP and the G5 so you can screen share the G5 to the MP. But, my question now really is this: what exactly are you trying to do/intending?

If you want a PTP connection, you have to have both Macs off the main network. If you want to keep the MP on the main network, but screenshare the G5 to it then you have to have both Macs on the main network.

It's either both on or both off. There is no middle ground here. Internet sharing is a workaround, but I don't understand why both Macs can't be on your home network and then you just use the IP address your router assigns the G5 to connect via screensharing to the G5.

 

[doctor_dog]

It's either both on or both off. There is no middle ground here. Internet sharing is a workaround, but I don't understand why both Macs can't be on your home network and then you just use the IP address your router assigns thew G5 to connect via screensharing to the G5.

^ this.

I'm sorry, I misunderstood what you were referring to by Ethernet 1 and Ethernet 2, I thought you were describing the numbering of the Ethernet ports on your router, not the physical network interfaces on your MP. If your MP has two Ethernet interfaces, then yes, you will want to only fill in the Router IP section for the interface that is connected to your router (sounds like Ethernet 1)...but in that case, I would go back to using DHCP as eyoungren suggested. For the interface connected directly to your G5 (sounds like Ethernet 2), you can assign a static IP and in that case you do want to leave the Router IP field blank (you don't want to route internet-bound traffic to your G5). Having two Router IPs set on a machine can cause issues as you're effectively setting two default gateways for your system and they compete.

 

[MarkC426]

Breaking it down, sorry for the confusion....😬
Both MP and G5 are connected together via the computer Ethernet ports.

The MP is connected to internet router via Ethernet 1 using DHCP.
The MP is connected to the G5, Ethernet 2 (MP) to Ethernet 1 (G5).

The Ethernet 2 (MP) is set to manual ip, with router ip in-filled.
The Ethernet 1 (G5) is set to manual ip, with router ip in-filled.

I do not need internet on the G5.
I just want to access files, maybe run software on the G5 via screen sharing.

Hope this makes sense.

 

[theMarble]

Just adding this as another option, how much storage do you have on your MP? You could make a small HFS+ partition that is used for file sharing with Macs with no APFS support.

 

[eyoungren]

Breaking it down, sorry for the confusion....😬
Both MP and G5 are connected together via the computer Ethernet ports.

The MP is connected to internet router via Ethernet 1 using DHCP.
The MP is connected to the G5, Ethernet 2 (MP) to Ethernet 1 (G5).

The Ethernet 2 (MP) is set to manual ip, with router ip in-filled.
The Ethernet 1 (G5) is set to manual ip, with router ip in-filled.

I do not need internet on the G5.
I just want to access files, maybe run software on the G5 via screen sharing.

Hope this makes sense.

Again, you can't have it both ways. Either you put the G5 on the home network, whether it needs internet or not - or you take the MP off the network and share only a two way connection with the G5.

It's that simple.

 

[MarkC426]

Apologies @eyoungren, I am not sure what you mean by my home network.
I don't have a 'network' setup.
I literally have the two macs connected together.

Do I need to use a network hub?
Networking is not my forte' (computers or in real life...)

 

[theMarble]

I don't have a 'network' setup.
I literally have the two macs connected together.

Do I need to use a network hub?
Networking is not my forte' (computers or in real life...)

So you have a router right? How many Ethernet jacks does it have? (excluding the one that is used to get to the wider internet, called WAN)

 

[eyoungren]

Apologies @eyoungren, I am not sure what you mean by my home network.
I don't have a 'network' setup.
I literally have the two macs connected together.

Do I need to use a network hub?
Networking is not my forte' (computers or in real life...)

The MP is connected to internet router via Ethernet 1 using DHCP.

If you have a router, you have a home network. Even if that's only one computer.

Most routers have more than one LAN port (and only one WAN port). LAN is Local Area Network and refers to your home network, which I've already explained that you have.

WAN, Wide Area Network, is the port connecting you to your ISP/internet.

If you only have one LAN port you will either need a hub or a switch (a switch is preferable). Otherwise, connect a cable to the second LAN port and then to the G5. That will put both Macs on your LAN (home network).

Then you can determine what IP address your router has given the G5 and use screen sharing via that IP address.

 

[theMarble]

If you have a router, you have a home network.

Could also be a modem/router combo unit that some ISP's provide.

 

[MarkC426]

So you have a router right? How many Ethernet jacks does it have? (excluding the one that is used to get to the wider internet, called WAN)

3 Ethernet and 1 gigE
So should I be connecting both computers to the broadband router, rather than together.

I was following this principal

Use Ethernet to connect two Mac computers

On your Mac, use an Ethernet cable to connect two computers and share files or play network games.

support.apple.com

 

[theMarble]

So should I be connecting both computers to the broadband router, rather than together.

Yes.

 

[cellularmitosis]

I only saw one other recommendation for scp, I wanted to add that rsync is another option which works out of the box:

 

[MarkC426]

After heading down the correct route, Screen Sharing is sorted....
Doing the proper way only took about 30 mins, if that.
Thanks @eyoungren, @theMarble, @doctor_dog for all your help, much appreciated.
Now it's set up correctly, I realise how easy it should have been....🤣
You live and learn.

 

[eyoungren]

After heading down the correct route, Screen Sharing is sorted....
Doing the proper way only took about 30 mins, if that.
Thanks @eyoungren, @theMarble, @doctor_dog for all your help, much appreciated.
Now it's set up correctly, I realise how easy it should have been....🤣
You live and learn.

View attachment 2157896

Up next, we can talk about Exchange Server and Active Directory…

No? Never mind then.

Glad it worked out!

 

[crimsonRE]

Up next, we can talk about Exchange Server and Active Directory…

No? Never mind then.

Glad it worked out!

Do NOT send them into the MS Underworld, which I believe equates to the Sixth Level of Hell (Fraud)...