Q: router同switch的分別有可不同? switch跟hun又是否一樣功能?
A: Yes.
Router is a device that can assign IP to different computers or other networking devices (like network printer, network drive ... etc), and it's also using the star topology that works the same as the switch. That means all the computers or networking devices can have almost the same high data transfer speed. For example, If this router can support 100Mbps network, all the devices can have almost the same top speed to talk with each other or sharing Internet. Router is also working as a gate to seperate the internet world and your internal network (works like a gateway), so it will increase the difficulties of the hacker to get into your network. Most of the router also have the internal hardware firewall to protect your internal network from hacker.
Switch is a device that is using the star topology. It also has the intellegence to control the network traffic so all the devices connected with the same data transfer speed.
Hub is a device that shares the network connections, it works like a "萬能插蘇", for sharing only. So, the data transfer speed depends on how many devices you are hooking up. For example, you have a 100Mbps HUB, and you have 3 computers hooking up together, the max. speed will be 100/3 = 33.33Mbps
Q: 家用的network有否需要用到vpn?
No, it only uses for several big WAN that locate in different area.
Q: 聽別人說可以搖控家裏的電腦, 是用vpn嗎? 如何setup? thanks
Windows has a feature call "Remote Desktop connection", you need to disable the firewall (no matter you are using the software like Zonealarm or the hardware one from router or others) but you will have less protect. Logmein is a good choice since it's user-friendly and easy to handle. You just need to install this software, and assign an account from Logmein, then you can use different computer and login as an web-email to access your computer. (
www.logmein.com)
