A firewall is either software or dedicated hardware that exists between the network and the resource being protected. this network security device monitors traffic to or from the network. It is based on set of rules about what data packets will be allowed to enter or leave a network.
/etc/services on my CentOS machine goes up to 49000. Reserved ports are less than 1024.
Well known and reserved ports are two different things. Well known ports only need a registration with IANA. Reserved ports, on *nixes, requires root for a deamon to bind to the port.
Well, it wouldn't be such a good idea if they got caught up in a storm, would it? :p
Strong winds could blow them off-course, or even lightning has a chance of striking the hand glider, causing damage to the glider, the person, or even both.
Additionally, a weather forecast can help in my generic situations. For example, knowing whether to wrap up warm for cold weather, or wear something a bit more loose and breathable for hot weather.
I have a feeling you're looking for Microsoft Outlook.