Recently, trying to connect to http://192.168.7.2 on a BBB from my desktop stopped working.
I can still ssh debian@192.168.7.2 and I can connect to cloud9 http://192.168.7.2:3000/ide.html but no response on port 80.
desktop$ telnet 192.168.7.2 80
Trying 192.168.7.2...
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 0.0.0.0 port 80 ...
192.168.7.1 - - [22/May/2022 10:56:07] "GET / HTTP/1.1" 200 -
192.168.7.1 - - [22/May/2022 10:56:07] code 404, message File not found
192.168.7.1 - - [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
BeagleBoard.org 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.