Ubuntu 12.04 open port 80 inside WLAN
- by Eduard
I have an nginx server running on ubuntu 12.04 that serves http through port 80 and https through port 443.
Everything works fine if I access it from the same computer via localhost, 127.0.0.1 or the local IP 192.168.0.11. If I try to access the server from another computer in the same VLAN it does not work for http; it works for https. I have changed my nginx configuration to also listen to port 8000 for http; I can then access http from the other computer in the same VLAN via "http://192.168.0.11:8000".
I also have a web server running on port 80 on a windows machine and can access it from another device in the same VLAN, therefore the router is not blocking incoming http traffic.
The nginx process is run by root. I have used tcpdump and I see that packets are arriving to Ubuntu:
192.168.0.16.49735 192.168.0.11.80
and that some response is being given
192.168.0.11.80 192.168.0.16.49735
(I do not know what the response is though). There is no request arriving at the nginx web server (I have checked the access log).
I have iptables empty. I have unsuccessfully tried to find a solution for a long time to this, it has now become a matter of happiness or bitterness :).
