Serving port 80 website

Recently, trying to connect to on a BBB from my desktop stopped working.

I can still ssh debian@ and I can connect to cloud9 but no response on port 80.

desktop$ telnet 80
telnet: Unable to connect to remote host: Connection refused

Thinking that a debian update on the BBB blocked port 80 “for security”, I successfully started the simple python file server on port 80.

debian@beaglebone:/etc$ sudo python3 -m http.server 80
[sudo] password for debian:
Serving HTTP on port 80 ... - - [22/May/2022 10:56:07] "GET / HTTP/1.1" 200 - - - [22/May/2022 10:56:07] code 404, message File not found - - [22/May/2022 10:56:07] "GET /favicon.ico HTTP/1.1" 404 -

I can connect to this from my desktop. So, it is not a fundamental networking or firewall issue. Just for some reason my BBB stropped responding to port 80 with the usual page.

debian@beaglebone:~$ cat /etc/dogtag Debian Image 2018-10-07
debian@beaglebone:~$ uname -a
Linux beaglebone 4.14.71-ti-r80 #1 SMP PREEMPT Fri Oct 5 23:50:11 UTC 2018 armv7l GNU/Linux

I would appreciate any hints on what to try next.