Using Nginx reverse proxy function to solve the problem of Web site 80 port blocked _nginx

The mainland's network environment, all in the Celestial Beast system let me, such as small p people tragedy one; now a more powerful recruit, from the gateway blocked your 80 port, once sealed, the site domain name can not be accessed;
Above all nonsense, the following into the topic, the other does not post, directly to the code, the use of Nginx reverse agent function, generally we are very read, and not many records;
[Code]
server {
Listen 80;
server_name a.jb51.net;
Proxy_set_header X-real-ip $remote _addr;
Proxy_set_header remote-host $remote _addr;
Proxy_set_header x-forwarded-for $proxy _add_x_forwarded_for;
Access_log off;
Location/{
Proxy_pass http://192.168.1.100:81;
}
}

server {
Listen 80;
server_name b.jb51.net;
Proxy_set_header X-real-ip $remote _addr;
Proxy_set_header remote-host $remote _addr;
Proxy_set_header x-forwarded-for $proxy _add_x_forwarded_for;
Access_log off;
Location/{
Proxy_pass http://www.baidu.com:8080;
}
}
[HTML]