When I used the $_ convention I came up with this: 
/(21/4/2001 - 21:00:16) --- Intruder Detection Event - [Remote
=~ m~((\d{1,3}\.){3}\d{1,3})~)/: unmatched [] in regexp at C:\hack\hac
+k.pl line
12, <HACK> line 79.

[download]
Thanks for your help kschwab.

In reply to Re: Re: Octet Regex by amearse
in thread Octet Regex by amearse

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