You can enter a regular expression in Client Rules and Agent Rules. A regular expression is an object that describes a pattern of characters. Regular expressions perform pattern-matching and search-and-replace functions on text.

URL Content Redirection supports the following regular expression rules.

Rule Detail
Brackets [ ], [^ ], ( ), (?:), (?=)
\+metacharacter or metacharacter '\w', '\W', '\d', '\D', '\b', '.'
Quantifiers +, *, ?, {x}, {x,y}, {x,}
Alternation |

For detailed information about regular expressions, see

The following table contains examples of regular expression rules that URL Content Redirection supports.

Rule Entry Examples of Matching URLs and IP Addresses
.*\.net,,,, and
.*\.sth\.ctirial example.sth.ctirial,, and
.*administra,, and google.akmkda.eae/
.*a{4}custom\.com,, and
.*a{2,3}custom\.com,, and
.*train[abc]\.net,,, and
.*train[^abc]\.net,,, and
.*a+c*tra\.net,, and aaccctra.netword.
.*example(test)?\.cn,,, and
sac(?=sprt),, and
sac(?!sprt),, and
10\.1\.1\.1[0-5] through
10\.1\.(1|2)\.1[0-5] through and to
10\.[2-4]\.19\.12,, and
10\.[^2-4]\.19\.12,,, and
a(\w)cd(\d)345a\.com and
abc(\W)cd(\D)345a\.com and
((25[0-5]|2[0-4][0-9]|[01]?[0-9]?[0-9])\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9]?[0-9]) All IPv4 addresses.
.*example(test)?\.cn;10\.1\.1\.1[0-5];a(\w)cd(\d)345a\.com,, to,, and