# File firewall/lib/symbiosis/firewall/logtail.rb, line 58
      def pos
        return 0 if self.identifier.nil?
        return @pos unless @pos.nil?

        pos = @dbh.execute("SELECT pos FROM #{@tbl_name}
          WHERE filename = ? AND identifier = ? LIMIT 0,1", 
          [self.filename, self.identifier]).flatten.first

        pos = 0 if pos.nil?
        @pos = pos.to_i
      end