Sygate Personal Firewall is an excellent firewall for your PC that is already connected to a LAN, VPN or the Internet.
It protects against trojans, spyware, worms and other known and unknown dangers, as it protects against unauthorized use of malicious applications and unauthorized users across various types of networks. At any moment it lets you know your PC`s connections, both in and out, for you to quickly see if there are any suspicious connections and close them immediately.