Regular Expression to match IP address + wildcard

Question

I\'m trying to use a RegularexpressionValidator to match an IP address (with possible wildcards) for an IP filtering system.

I\'m using the following Regex:

Answer 1

How about putting start and end string characters on the expression

^([0-9]{1,3}\\.|\\*\\.){3}([0-9]{1,3}|\\*){1}$