You cannot. For a game to work properly, it must have a path from the server to the client program running on your computer. You can configure your computer to be wide open without changing the router settings, but if the router is blocking the port(s) you need, there's no way to get around it without adjusting the router settings.
You can open an internet port for all incoming connections when connected through a router without changing router configuration by port forwarding using a DMZ.
A standalone computer is one that in not attached to any network locally or not. A networked computer is either wirelessly or wired to a switch, router, domain, server, modem, other computer, ect...
run command "net view"
No. A standalone computer (that is, one which is not part of any network and which is not connected to the Internet) is vulnerable to a multitude of risks, but it is not vulnerable to the additional risks introduced with connections to a network and, specifically, to the Internet. The risks to which a standalone computer is exposed are a subset of those to which a networked computer is exposed. These risks primarily include risks brought in from users (owing to ignorance, carelessness or bad intentions), such as the introduction of bad software, computer viruses and some-such through portable storage devices like floppy diskettes or memory sticks. The additional thread to which a networked computer is exposed is a thread to pretty much the same vulnerabilities (malware, etc), but these can be obtained in a number of new ways, and may be obtained without the user knowing.
No, RJ45 is only used for ethernet connections and can be used between your computer and any networked device, such as a cable modem or a network hub.
Yes, many do, especially networked printers.
Firewall and internet security suit.
Probably not. It actually depends on the configuration of your work network. In any case, making changes you don't fully understand puts your network, and possibly your job, at risk.
computer network defense
The companies that produce configuration audit software are businesses such as Oracle that specializes in network programming and network connections to get servers to communicate in data centers. Companies that specializes in computer integration in regards to cloud computing also are able to produce configuration audit software relative to accounting and inventory.
One can find a computer configuration service online at Angies List. Not only will you find a computer configuration service, you will also see detailed reviews of the service.
Network interface card :D
Plug the cat5 cable in or use the wireless mode--- magic you are networked.