Jenkins and Github auto trigger
This cannot work. localhost maps to the IP address 127.0.0.1, which is just the same machine. So while you can access your local Jenkins installation via localhost, the GitHub server cannot.
You will either need a static IP address or you need to map a DNS entry to your dynamic IP (for example with http://www.dnsdynamic.org). And you need to open the port 8080 for external access. Only then will GitHub be able to reach your local instance with its webhook.