colorize your `iptables` output

iptables_color.txt

## based on the blogpost here: http://blog.sjas.de/posts/colored-iptables-output.html

iptables --line-numbers -vnL |\
  sed -E 's/^Chain.*$/\x1b[4m&\x1b[0m/' |\
  sed -E 's/^num.*/\x1b[33m&\x1b[0m/' |\
  sed -E '/([^y] )((REJECT|DROP))/s//\1\x1b[31m\3\x1b[0m/' |\
  sed -E '/([^y] )(ACCEPT)/s//\1\x1b[32m\2\x1b[0m/' |\
  sed -E '/([ds]pt[s]?:)([[:digit:]]+(:[[:digit:]]+)?)/s//\1\x1b[33;1m\2\x1b[0m/' |\
  sed -E '/([[:digit:]]{1,3}\.){3}[[:digit:]]{1,3}(\/([[:digit:]]){1,3}){0,1}/s//\x1b[36;1m&\x1b[0m/g' |\
  sed -E '/([^n] )(LOGDROP)/s//\1\x1b[33;1m\2\x1b[0m/'|\
  sed -E 's/ LOG /\x1b[36;1m&\x1b[0m/'
  
  ## Line  4 underlines chain "section titles"
  ## Line  5 makes the column headers yellow
  ## Line  6 highlights REJECT and DROP as red everwhere except chain "section titles"
  ## Line  7 highlights ACCEPT as green
  ## Line  8 highlights port numbers as yellow
  ## Line  9 highlights IP address and CIDR blocks as cyan
  ## Line 10 highlights LOGDROP as yellow everywhere except chain "section titles"
  ## Line 11 highlights LOG everywhere as cyan