How can I stop spam ? Let your family and friends know that you do not share your private email address. Make sure that your email address is hard to guess, the easier to remember or easier to guess the easier it will be for someone to guess also. Change you email address often...
Linux firewall can help with blockikng unwanted guests. Linux developers think of everything, one of my websites that I play around with is out in the residential world with a lonely nat server to protect it from harms way. One day while looking for a new GUI to interface with I found linux firewall....