--- fierce-orig.pl	2007-12-20 12:01:52.000000000 -0500
+++ fierce.pl	2007-12-20 19:04:18.000000000 -0500
@@ -94,7 +94,7 @@
 }
 
 my $result = GetOptions (	
-			'dns=s'		=> \$dns, 
+        			'dns=s'		=> \$dns, 
 	                'file=s'	=> \$filename,
                   	'suppress'	=> \$suppress,
                   	'help'		=> \$help, 
@@ -106,7 +106,7 @@
                   	'dnsserver=s'	=> \$dns_server,
                   	'version'	=> \$version,
                   	'search=s'	=> \$search,
-                  	'stop=s'	=> \$stop,
+                  	'stop'	=> \$stop,
                   	'wordlist=s'	=> \$wordlist,
                   	'fulloutput'	=> \$full_output,
                   	'nopattern'	=> \$nopattern,
@@ -131,7 +131,7 @@
   if (-e $filename) { # file exists
     print "File already exists, do you want to overwrite it? [Y|N] ";
     chomp(my $overwrite = <STDIN>);
-    if ($overwrite eq 'y' || $overwrite eq 'Y') {
+    if ($overwrite =~ /y/i) {
       open FILE, '>', $filename 
         or quit_early("Having trouble opening $filename anyway");
     } else {
@@ -202,8 +202,9 @@
 }
 
 if ($traverse) {
-  quit_early('The -t flag must contain an integer 0-255') if $traverse !~ /\d/;
-  quit_early('The -t flag must contain an integer 0-255') if $traverse < 255;
+  unless ($traverse =~ /\d{1,3}/ && ( $traverse >= 0 || $traverse <= 255 ) && $traverse !~ /0\d{1,2}/){
+    quit_early('The -t flag must contain an integer 0-255');
+  }
 } else {
   $traverse = 5;
 }
@@ -461,9 +462,9 @@
     #TODO: add port selection and range support
     my $socket = new IO::Socket::INET (	
                                       	PeerAddr => "$ip_and_hostname[0]",
-	                              	PeerPort => 'http(80)',
-       					Timeout  => 10,
-                              		Proto    => 'tcp',
+	                                  	PeerPort => 'http(80)',
+                      					Timeout  => 10,
+                                  		Proto    => 'tcp',
                                       )
       or next;
     $webservers++;