Web Proxy Squid Setup

A proxy is a host which relays web access requests from clients a proxy server is an application program that acts as an intermediary for requests from clients seeking resources from other servers. A client connects to the proxy server, requesting some service, such as a file, connection, web page, or other resource, available from a different server. Squid Setup browserproxy Internet http

 To speed up access to resources (using caching). Web proxies are commonly used to cache web pages from a web server. [ [  To keep machines behind it anonymous (mainly for security).  To apply access policy to network services or content, e.g. to block undesired sites.  To log / audit usage, i.e. to provide company employee Internet usage reporting.  To bypass security/ parental controls.

 Accept-Charset  Content-Type  Host (virtual domain)  Proxy-Authenticate  If-Modified-Since  Last-Modified  Max-Forwards  X-Forwarded-For

HeaderDescriptionExample AcceptAccept: text/plain Accept-CharsetAcceptable encodingsAccept-Charset: iso Cache-ControlCache controlCache-Control: no-cache hostVrtual hostingHost: mailinglist.sustech.edu Host:mcw.sustech.edu X-Forwarded-ForThe real ip addressX-Forwarded-For:

 1-Caching  -Manually setting in the browser -WPAD (auto) needs DHCP setting and Web server.

Is the process by which HTTP connections coming from remote clients are redirected to a cache server, without their knowledge or explicit configuration.

 Used in front of Web servers. All connections coming from the Internet addressed to one of the Web servers are routed through the proxy server, which may either deal with the request itself or pass the request wholly or partially to the main web servers.

 multi-level caching in order to reduce internetwork load and obtain an Increase in performance.

 MS ISA Server  WinGate  WinRoute  MS Proxy  WinProxy  Eserv  Squid  Proxy Plus

 It runs on most available operating systems, including Windows and is licensed under the GNU GPL.

/etc/squid/squid.conf (configuration file). Listening port http_port 8080 Allow for access acl ART_CAMPUS src http_access allow ART_CAMPUS Hirarchical design acl UOFK dstdomain.uofk.edu cache_peer parent no-query never_direct allow UOFK Restart squid Service squid restart Squid Setup

Good Luck…