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-rw-r--r--docs/man5/tinyproxy.conf.txt.in21
1 files changed, 21 insertions, 0 deletions
diff --git a/docs/man5/tinyproxy.conf.txt.in b/docs/man5/tinyproxy.conf.txt.in
index b5619dd..66dd04e 100644
--- a/docs/man5/tinyproxy.conf.txt.in
+++ b/docs/man5/tinyproxy.conf.txt.in
@@ -256,6 +256,27 @@ Tinyproxy supports filtering of web sites based on URLs or
domains. This option specifies the location of the file
containing the filter rules, one rule per line.
+Rules are specified as POSIX basic regular expressions (BRE), unless
+FilterExtended is activated.
+Comment lines start with a `#` character.
+
+Example filter file contents:
+
+ # filter exactly cnn.com
+ ^cnn\.com$
+
+ # filter all subdomains of cnn.com, but not cnn.com itself
+ .*\.cnn.com$
+
+ # filter any domain that has cnn.com in it, like xcnn.comfy.org
+ cnn\.com
+
+ # filter any domain that ends in cnn.com
+ cnn\.com$
+
+ # filter any domain that starts with adserver
+ ^adserver
+
=item B<FilterURLs>
If this boolean option is set to `Yes` or `On`, filtering is