QUOTE(faizyunus @ Apr 6 2023, 01:04 PM)
Just out of curiosity, you mentioned ping your house public IP. Not sure if your router has this setting enabled or not?

Usually I will never leave this setting enabled. I only enable when troubleshooting network issue.
Alternatively you can go with ZeroTier for remote access needs. For my network I use both OpenVPN and ZeroTier. Never exposed my devices directly to the internet for security reasons.
Hopefully TIME manages to resolve your issue.
First of all, I want to say I am still a noob in networking. Despite I am a programmer.
I am using the default router Huawei HG8145X6
I used a DDNS so that I got a domain that linked to my home public IP. Out of surprise, I found that router able to run a DDNS application. I setup gnuip/dynu. Can't run duckDNS.
DDNS consider safe?
I got no knowledge to setup a self VPN and I just see this "ZeroTier" wording yesterday when I am searching the net from my issue.
But since you mention it, I will do some research on this. Thank you very much for the recommendation.
Yes, I called Times this morning and tell them I can't ping my public IP. Then their tech team help me to do some config and BOOM! I can ping already.
FTP, SSH, Nextcloud all come back.
Again, thank the community to keep me not giving up to solve the issue. Especiall JJ.