Added README

README

@@ -0,0 +1,41 @@
+Openufp
+=======
+
+Open URL Filtering Proxy is an URL Filtering Server for N2H2 or Websense compatible devices.
+It supports multiple back ends like url blacklist file, squidguard and proxy servers like dansguardian.
+This project has been known as n2h2p.
+
+
+Usage
+=====
+
+Usage: openufp [OPTIONS] <-n|-w> <BACKEND>
+
+OPTIONS:
+   -l PORT   on which port openufp will listen for incoming requests
+   -r URL    when url is denied the client will be redirected to this url; n2h2 only
+   -c SECS   cache expire time in seconds; default 3600; 0 disables caching
+   -C URL    remove specified URL from cache
+   -d LEVEL  debug level 1-3
+
+FRONTEND:
+   -n        act as n2h2 server
+   -w        act as websense server
+BACKEND:
+   -p IP:PORT:DENY_PATTERN   use the proxy backend
+             IP is the ipnumber of the proxy server
+             PORT is the portnumber where the proxy server is listening on
+             DENY_PATTERN is a piece of text that should match the deny page
+   -f FILE   use the blacklist file backend
+             FILE is a file which contains blacklisted urls
+   -g        use the squidGuard backend
+
+
+
+Note
+====
+
+The default location of the cache db is /var/cache/openufp/cache.db.
+When squidguard backend is used be sure that this program has rw permissions
+to the squidguard db files.
+