To prevent incoming/outgoing connections to your computer. And/or to ALLOW incoming/outgoing connections, as well.
If too many programs are running or if too many incoming connections are on your computer, it could slow your CPU speed down.
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firewall
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A firewall is the tool that blocks ports, programs, or any other network traffic from incoming or outgoing connections.
By default wireless routers block all incoming connections. You need to to open the remote desktop port on the router. And also you might have to setup redirecting of incoming remote desktop connections on a particular pc.
neurons and synapses , that is nerve cells and their connections
Portforwarding is a method of "telling" the router which device inside of a network an incoming connection should be directed toward. The function is to make sure that all incoming connections are forwarded to the right computer or device.
When you are opening ports to allow incoming connections to your computer, your computer must be assigned a static internal IP address, to ensure that the incoming connections always go to the correct computer.
the incoming signal is too loud, it is most likely clipping from the sound source.
Phoenix Labs developed PeerGuardian. PeerGuardian is an open source program capable of blocking both incoming and outgoing connections based on blacklists.