Generally, web proxies are the proxies that primarily focuses on WWW traffic. These proxies usually
try to block any offensive or bad web content. Some web proxies can also change the format of web pages,
depending on the purpose, or the target audience. For example, they can change it for people with disabilities,
or for cell phones and PDAs.
Proxy servers are also used to enforce certain acceptable policies on the network to provide security,
caching services, and anti-malware. Generally, schools, corporations, and even countries, along with many other
organizations, use these proxy servers to enforce these rules. Traditional web proxies aren't transparent to client
applications, but it must first be configured to actually use such proxy. This can be done with a script or manually.
If there are other connections available to the internet, the user can avoid these rules by changing, or resetting
the client configuration to bypass any proxies in place. Network admins also have a hard time keeping the browsers
maintained with the original configurations.
Access control: In bigger companies or organizations, people must login to the proxy server in order to have
access to the internet. They can track individual usage by implementing a logon requirement to people that
want to use the internet.