diff --git a/lib/msf/ui/console/command_dispatcher/db.rb b/lib/msf/ui/console/command_dispatcher/db.rb
index 1438936c1e..f1c921f60e 100644
--- a/lib/msf/ui/console/command_dispatcher/db.rb
+++ b/lib/msf/ui/console/command_dispatcher/db.rb
@@ -112,29 +112,6 @@ module Db
 		end
 		
 		
-		def parse_port_range(desc)
-			res = []
-			desc.split(",").each do |r|
-				s,e = r.split("-")
-				e ||= s
-				s = s.to_i
-				e = e.to_i
-				
-				if(e < s)
-					t = s
-					s = e
-					e = t
-				end
-				
-				s.to_i.upto(e.to_i) do |i|
-					next if i == 0
-					res << i
-				end
-			end
-			
-			res
-		end
-		
 		#
 		# A shotgun approach to network-wide exploitation
 		#
@@ -181,9 +158,9 @@ module Db
 				when '-X'
 					targ_exc << OptAddressRange.new('TEMPRANGE', [ true, '' ]).normalize(args.shift)
 				when '-PI'
-					port_inc = parse_port_range(args.shift)
+					port_inc = Rex::Socket.portspec_crack(args.shift)
 				when '-PX'
-					port_exc = parse_port_range(args.shift)
+					port_exc = Rex::Socket.portspec_crack(args.shift)
 				when '-m'
 					regx = args.shift
 				when '-h'
diff --git a/lib/rex/socket.rb b/lib/rex/socket.rb
index d2de699737..3bcf1ab192 100644
--- a/lib/rex/socket.rb
+++ b/lib/rex/socket.rb
@@ -351,6 +351,29 @@ module Socket
 		[ (~((2 ** (32 - bitmask)) - 1)) & 0xffffffff ].pack('N').unpack('CCCC').join('.')
 	end
 
+	#
+	# Converts a port specification like "80,21-23,443" into a sorted,
+	# unique array of valid port numbers like [21,22,23,80,443]
+	#
+	def self.portspec_crack(pspec)
+		ports = []
+
+		# Build ports array from port specification
+		pspec.split(/,/).each do |item|
+			start, stop = item.split(/-/).map { |p| p.to_i }
+
+			start ||= 0
+			stop ||= item.match(/-/) ? 65535 : start
+
+			start, stop = stop, start if stop < start
+
+			start.upto(stop) { |p| ports << p }
+		end
+
+		# Sort, and remove dups and invalid ports
+		ports.sort.uniq.delete_if { |p| p < 0 or p > 65535 }
+	end
+
 	##
 	#
 	# Utility class methods
diff --git a/modules/auxiliary/scanner/portscan/tcp.rb b/modules/auxiliary/scanner/portscan/tcp.rb
index 401226bc40..c8c09cdbb6 100644
--- a/modules/auxiliary/scanner/portscan/tcp.rb
+++ b/modules/auxiliary/scanner/portscan/tcp.rb
@@ -12,7 +12,6 @@
 
 require 'msf/core'
 
-
 class Metasploit3 < Msf::Auxiliary
 
 	include Msf::Exploit::Remote::Tcp
@@ -44,22 +43,8 @@ class Metasploit3 < Msf::Auxiliary
 	def run_host(ip)
 	
 		timeout = datastore['TIMEOUT'].to_i
-		ports = []
 
-		# Build ports array from port specification
-		datastore['PORTS'].split(/,/).each do |item|
-			start, stop = item.split(/-/).map { |p| p.to_i }
-
-			start ||= 0
-			stop ||= item.match(/-/) ? 65535 : start
-
-			start, stop = stop, start if stop < start
-
-			start.upto(stop) { |p| ports << p }
-		end
-
-		# Sort, and remove dups and invalid ports
-		ports = ports.sort.uniq.delete_if { |p| p < 0 or p > 65535 }
+		ports = Rex::Socket.portspec_crack(datastore['PORTS'])
 
 		if ports.empty?
 			print_status("Error: No valid ports specified")