The example you show with telnet suggests no fault. However, testing from the server to itself is not going to establish that your connection is allowed from another system. One presumes that since you are testing from the command line with telnet that you are not using a local browser.
Is the browser you ARE using on the same network segment? Are there intervening firewalls?
Are you running local firewall rules? Have you created an additional rule to allow access to port 8000 from other sources?
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