Re: Getting around a filter
Quote:
Originally Posted by dglienna
they don't have it set up right if it allows IP addresses to porn sites.
Dunno about porn, but they blocked MSN Web Messenger, and I can still get to it via IP address.
The google search for "pink" is funny though, it's classified as Adult-SEX ROTFLMAO :bigyello:.
Re: Getting around a filter
don't think it makes a difference. maybe they want you to be able to type in a local address. they'll change it quickly, once that they notice.
Re: Getting around a filter
I think this depends on what the company has in place. A simple proxy server is peanuts to bypass. But if you look at the mechanics of the HTTP request there are many other things which can be use to filter requests too:
- DNS - Most probably, your company will have its own DNS servers. It isn't hard to block requests for certain hosts, or simply return the IP address of a local server which displays a warning message.
- Proxy on the default gateway - This is usually configured as a transparent proxy, i.e. the hosts have no idea that it exists. The advantage of this, is that any request outside the LAN to the Internet passes through the gateway.
- Stateful packet inspection on the gateway - this is by far the hardest to get around. By examining the content of the packets passing through the gateway and keeping track of connections to and from other hosts. They can even peek inside the packet and check the protocol being used, i.e. if you are connecting to port 21, are you using ftp? if not then drop it.