TODO File for NetRecon
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- Add an option to resolve IP addresses to DNS and/or hostnames
  We don't want to do this by default unless the target-spec is
  a name because of the possible overhead
- In active scans add an intelligent port guess for ping and the 
  initial scan of a host (up/down) instead of port 1. This will
  help get around firewalls and network problems. Note it should be
  done prior to port looping so some ports may be repeated.
  This would be good for 1.79
- In all scan functions add a fuzzy guess OS by port function. This
  means the active scans will need to keep data about ports somewhere
  for processing after a scan run.
  This would be good for 1.79
- Targeted scanners might be a good idea to get around some of the wait
  times that the generic active scanner imparts. Webscanners would be
  the first most obvious type. As an alternative a perl or python
  wrapper that simply calls out 'netrecon scan port N' might make more
  sense.
  This would be good for 1.80
- A dual mode passive/connect scan would be good to super validate if a 
  system actually has a port open. In this sense we wait for for port to
  be identified as a possible real service then try a tcpconnect on it.
  Should be able to evade IDS better than connect scan but not as good as
  a full on passive. 
  This would be good for 1.80
- The tcpdumper could probably use a few more features. Have to be very
  careful here to avoid bloat.
- There exist many places where there is still code duplication, naming
  conventions could be better to help explain where they are used and 
  why (similar to the pcap_FOO convention) and likely some procedures
  could be improved.
- Prudently investigate tools like dnet and nmap to see if there is anything
  they do that might be of interest to netrecon. See above warning about
  bloat.
- It has been reqwuested that passive (and probably active and the future
  dual mode) have an easily parsable format for tools like sql-loader. Look
  into this or write wrappers to fix up the output. Perl and/or sed/awk
  would be ideal for these.
- When doing active scans, have the default to be to print nothing if a
  host cannot be seen and some other option (VV?) to print possible reasons
  why a host is not showing up.