FAQ

Basic Information about Internet:

Q1: What is a Mail Server?
Q2: What is FTP?
Q3: What is a Gateway?
Q4: What is DNS?
Q5: What is a Proxy Server?

Q1: What is a Mail Server?
A1: A Mail Server is responsible for receiving and sending your mails. All emails you send and receive have to go through the server. The NTU has 2 email servers so when you need to use either Netscape or Outlook to send and receive emails, the mail server settings are as follows :
For faculty members: ccms.ntu.edu.tw, Email Address is: xxxxx@ccms.ntu.edu.tw
For students: ms.cc.ntu.edu.tw, Email Address is: xxxxx@ms.cc.ntu.edu.tw
xxxxx is your account name.
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Q2: What is FTP?
A2: FTP is the abbreviation for file transfer protocol. As implied by name, it is a protocol designed for transferring files. FTP is not confined to some specific operating systems (such as WINDOWS), as long as the standard RFC959 and TCP/IP protocol are followed, files can be transferred across different operating systems, such as WINDOWS and RedHat Linux. As a result of the popularization of applications on websites, more and more people transfer files directly via HTTP, though, there are still many resources of information engineering, computer networking, and even academy are transferred via FTP. It is precisely because it is simple and fast (little overhead during transmission processes). However, we should note that user information as well as files in simple FTP are transferred in plain code, which may insinuate doubts of security. This can be dealt with through SSH-FTP.
Common FTP server software: ftpd, vsftpd, FileZilla FTP Server, Gene FTPd, etc.
Common FTP client software: ftp, FileZilla FTP Client, SmartFTP, etc.
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Q3: What is a Gateway?
A3: As there are many machines in the University, they are divided into different domains. For example: The IP address of the C&INC workstations is 140.112.8.xxx, and therefore the workstations are on the NTU .8 domain. Every domain has a gateway that connects with other domains and each gateway needs to use an IP address. The gateways are regularly set at 254 of each domain, therefore, the IP address of the gateway on the .8 domain is 140.112.8.254.
The gateways for other domains would therefore be 140.112.xx.254, where xx is your domain.
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Q4: What is DNS?
A4: IP addresses are usually difficult to remember; therefore, it is easier to give your machine a name, and then register it on the DNS so that others can find you via the DNS. Of course the users must register with network administrators for them to configure your DNS in the network environment.
NTU (Primary) DNS: 140.112.254.4 (Secondary) DNS: 140.112.2.2
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Q5: What is a Proxy Server?
A5: A Proxy Servers is not a basic setting for the Internet environment; it is designed to speed up the information retrieval of the browsers (IE or Netscape). If someone else has already viewed the information that you are going to view now, your machine does not need to retrieve the information from the computer of which the information is stored, but retrieve it directly from the Proxy Server. The setting method of NTU Proxy Server is:
  1. IE 5.x: Go to [Tools] → [Internet] → [Connect] → [LAN Setting] → [Use Auto-Proxy Script] → and fill in http://proxy.ntu.edu.tw/pac/ntu.pac at “Website”
  2. Netscape Navigator 4.x: Go to [Edit] => [Function Setting] => [Advanced] => [Proxy Server], and fill in http://proxy.ntu.edu.tw/pac/ntu.pac
  3. For settings for other systems please refer to General User Setting in NTU Network Caching Service. If other Proxy Servers are open you can also set on those proxy servers.
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