How to configure the router so Back To Mac optimal

Yes, I see that you have enabled UPnP on your Huawei gateway and are still getting the "error" message when using BtMM. Since your gateway does not have an option to enable/disable NAT-PMP, it leads me to at least two reasons that you are getting this message:

1. BtMM attempts to open the appropriate ports on your gateway to allow it to communicate. Again, it would do this "automatically" by using either the UPnP or NAT-PMP protocols. BtMM can be a bit finicky and may not perform this process efficiently with all makes of routers. However, the message does provide a clue ... and that is about it being "slow." Which leads me to the second potential reason.
2. In order for BtMM to work "efficiently" the public (WAN-side) IP address of your gateway must be publicly reachable. That is, its IP address must NOT start with 10, 172, or 192. A quick way to test this is to run the traceroute command in either the Terminal or the Network Utility app.

As an example, l will run it from the Network Utility, as follows:

• Option-click on the Apple logo on the macOS menu bar.
• Select System Information.
• From the System Information menu bar, select Window > Network Utility
• Click on the Traceroute tab.
• I will use 8.8.8.8 (the Google DNS server) for this test. Enter this value in the "Enter an Internet address to trace the route to" field.
• Click on Trace.

I provided a screen shot of my results below:

Each numbered "hop" represents a router that the traceroute packet has traversed to its final destination at 8.8.8.8. The first hop should be a private IP address. That is an address that starts with 10, 172, or 192. This would be on your local network and on the LAN-side of your Huawei gateway. It would also be known as your gateway's router address. You can see it started with "10" from the image. The next hop starts with "173" which is a public IP address and what we would want.

I suggest that you use the Network Utility to run a traceroute from your local network and see what you get. Look at the IP addresses especially at the first two or three hops to see if they are private or public. You don't need to post them, just let us know your results.

No PPPoE is just a type of connection. The issue is that your ISP appears to be providing you with private IP address (172.16.xx.xx from the traceroute). You would then have a double NAT condition where you basically have two routers in series that are providing NAT service.

Looks like your only choice now is to either:

1. Change ISP or ask your ISP to provide your modem with a public IP address, or
2. User another third-party remote access product, like LogMeIn, for remote access.

NAT-PMP is a networking protocol similar to UPnP that is used on Apple routers as these routers do not support UPnP natively. Back to My Mac (BtMM) can use either of these protocols to open the necessary firewall ports on a router for it to work. It doesn't need both enabled ... so your enabling UPnP on your Huawei router is all that is needed.

Yes the issue is that the first three hops are all private IP addresses. Only the first one should be. It appears that either your home network has two or more routers in a double NAT configuration and/or your ISP is not providing you with a public IP address. Both of these would prevent BtMM from working.

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FWIW I think the best answer when having an issue with a third party device is to ask for help from the third party device manufacturer. If you are having a problem with your router the best place to seek help is with the manufacturer. If you are having trouble with a Microsoft product the best place to seek help is with Microsoft. If you are having trouble with your ...

You were provided with links to possible assistance then advised to seek help from the router manufacturer. I think the help provided was very reasonable. If you don't want to take the advice offered you might as well not ask.

When in doubt call the manufacturer's tech support.

No the “173” address is just an example. The first two hops are what you would want in this case.

Based on what I can see from traceroute there is a jump in hop time at hop 5 that is continuing to increase towards the destination. This would indicate an issue starting with that router going forward. This is neither your Huawei or your ISP, but somewhere farther down the line towards the Google DNS server. This would increase the overall data latency and possibly affect BtMM’s performance leading to the “error” message.

Although you could get some clues to who “owns” the “offending” router, you’re not going to be able to resolve it. This also may be a temporary condition that could “fix itself” in time.

So, unfortunately at this point, there is no real solution. Sorry, I wasn’t able to help you find one.

andy js wrote:

<snip>

What do you think went wrong there?

Lack of understanding of networking.

Possible Remedies:

Read/watch some networking tutorials.

Consult your router manual.

Follow these instructions. Set up and use Back to My Mac - Apple Support