Short description of iolo Firewall 1.5.1.3: Protect yourself against hackers, identity thieves, and other internet threats. iolo Personal Firewall blocks unwanted communication to and from your computer, preventing intruders from stealing your data or damaging your system. Get detailed information about suspicious programs. Establish custom security levels, and easily mark friendly computers, sites, and programs as trusted. Included stealth mode makes your PC invisible to hackers.