this program only block program for connect to network and internet? or block program in the windows ?
for block programs in the windows, I use Mamutu. for the network and internet use PC Tools Firewall ?
Firewall blocking for internet / network connection ?
what is incoming and outcomming ?
also,
what is Server / Client IP ? 
hya, you should keep only one Firewall in your windows.
I cannot understand you for “in the windows”, I guess you mean about something like HIPS? is not it?
a firewall itself would control any network traffic, anything to any network, a Lan or Internet or anything else…
also, Mamutu is the must weak firewall around, duo to the tests, it got must lower score!
for the HIPS, I don’t think if PC Tools has it, some other Firewall such COMODO or Outpost Firewall Pro or Online Armor has that feature. (HIPS is a feature that control programs behaviors, if you are not expert it would annoy you to manage it).
Incoming is the traffic that come from outside, for example when I try to connect to your computer, the data that come from me, for you it’s incoming.
out-going connection is what you send, for example when you connect to me, those things that you send to me is outgoing…
Server IP is the IP for server! it’s easy!! and client IP is your computer IP.
please expert friends correct me if I’m wrong.
here is one of the must trusted tests for Firewall programs, take a look on it and choose your favorite Firewall, personally I like Outpost Firewall Pro, it’s very easy to use, light and has a lot of presets inside so it don’t need to expert management.
http://www.matousec.com/projects/firewall-challenge/results.php