Question

Is it possible to make a Direct connection to the Internet without using a Proxy.

Consider a case that my Organization has a Proxy and I use the DIRECT option given in the Java Proxy class.

SocketAddress addr = new
InetSocketAddress("webcache.mydomain.com", 8080);
Proxy proxy = new Proxy(Proxy.Type.DIRECT, addr);

If you go by the documentation it states
DIRECT which represents a direct connection, or absence of proxy.

Which is exactly the way it behaves. When I use this option, I dont have to give any Proxy details and I can access the content from the Internet.

I have three questions

1. As per my understanding if an Organization has a Proxy, all network
   traffic should get routed through the Proxy. No one should be able
   to access the Network directly ?
2. I also noted that if I remove the Proxy details from IE, I can not
   access the Web 🙁 How can Java still do it ?
3. If in any Organization you can access both with the Proxy and
   Directly, how does the firewall block certain sites ? How does the
   firewall even work ?

Thanks in advance.

Answer 1

Not all Network traffic goes through a Proxy, if your Organization has a Proxy. You can still go ahead and establish a Direct connection to the Internet. Mostly the Organizations will block Direct connections and force you to use Proxies. Some times they might allow you to have a Restricted Direct connection, which allows certain URL’s and denies other ones.