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- =============================
- Begining in TCP/IP networks
- =============================
-
- =====================
- General information
- =====================
-
- Q: What is WinProxy?
-
- A: WinProxy is a program which allows access to the Internet for a entire
- local network and protects it as a firewall.
-
- Q: What services WinProxy supports?
-
- A: Above all it is WWW browsing and e-mails sorting, but WinProxy
- also features FTP and Telnet gateway.
-
- Q: What is a Firewall?
-
- A: Firewall is a computer placed between the local area network and
- the Internet. Firewalls provide protection from the open nature
- of the Internet. Commonly firewalls turn off packet routing
- on the host, preventing access through the IP network layer.
- Attacks based on IP spoofing cannot reach the local area network.
-
- Q: What is a IP address?
-
- A: It is a unique address of each computer on the internet, which allows
- finding of each computer and thus communication between computers via
- Internet using TCP/IP protocol. It is created from four numbers divided
- by dots (f.e. 195.118.31.47).
-
- Q: What is a Intranet?
-
- A: Intranet is a private network of computers, which comunicate as if connected
- to real Internet. You can configurate it yourself. If you have less
- than 255 computers you can use IP address 192.168.1.1 for first
- computer (with WinProxy running), 192.168.1.2 for second one etc.
- More details are in 5. chapter of Manual.
-
- Q: What is a cache?
-
- A: Cache is a buffer of memory. If you read any object from Internet,
- it is stored to a shareable cache. When anybody wants it again, it
- is loaded from the cache without connecting to the Internet. This
- is better for modem users. So if WWW page is updated you get old the
- version.
-
- Q: How long does cache store objects?
-
- A: This problem is divided into two factors. The setting of the maximal size
- of cache. When cache is full the oldest objects are deleted. As second
- it is Time-To-Live (TTL). After this time there are specified objects refreshed
- from Internet.
-
- Q: Who is ISP?
-
- A: ISP is a Internet Service Provider, who above all offers connection
- to the Internet using a modem and creates mail boxes and virtual domains.
-
- Q: What is DNS?
-
- Q: Domain Name Server (DNS) transfers DNS address (f.e. www.company.com)
- to IP address (f.e. 147.2121.12.33).
-
- =======================
- Hardware and software
- =======================
-
- Q: What operation system is needed for WinProxy?
-
- A: WinProxy needs MS Windows 95/98 or MS Windows NT with installed TCP/IP
- (Microsoft protocol). Computers can also work under Windows 3.11.
-
- Q: Does WinProxy also work with MS Windows 98?
-
- A: Yes.
-
- Q: What hardware do I need?
-
- A: Minimal hardware configuration for given OS, about 1 MB free space
- on harddisk and space for cache. You need better performance of CPU
- and more RAM for more users and faster connection too.
-
- Q: Is one static IP address enough?
-
- A: WinProxy runs on the computer that can access the Internet, so one
- static IP address is required by this computer only. Other computers
- access the Internet via its Intranet address that have been specified
- before. In addition, if the mailbox capability is not enabled,
- WinProxy will also work perfectly with a dynamic IP address.
-
-
- =================
- Electronic mail
- =================
-
- Q: What our ISP have to do if we want to receive e-mails?
-
- A: ISP must create at least one mail-box. Ideal case is with a own virtual
- domain(f.e. company.com) with arbitary number of e-mail addresses
- (boss@company.com, sales@company.com). Although your mails for your
- domain are stored in one mail-box on a ISP computer, WinProxy has the
- ability to receive them and then sort them to several local mail-boxes,
- using "To:" header.
-
- Q: What is a POP3 and SMTP server?
-
- A: If you aren't constantly connected to Internet then you wont recieve
- mail when your computer is off-line. Therefore your ISP has a computer
- (POP3 server) that is constantly connected to the Internet and when you
- connect Winproxy, it gets all new messages from your mail box.
- Winproxy also post all your mails to SMTP server in time of connection.
- POP3 and SMTP server are mostly the same.
-
- Modem connection
- ~~~~~~~~~~~~~~~~
-
- Q: When does WinProxy connect to the network via a modem?
-
- A: It'll connect automaticaly, if local network cannot satisfy user demand
- (Demand Dial mode) in specified time interval, (Schedule Dial mode)
- or manualy via WWW interface (Manual mode).
-
- Q: A terminal window stops WinProxy after each connection via a modem and
- I must enter information manualy?
-
- A: Your ISP doesn't support PAP or CHAP. You can dowload SCRIPT file from
- ftp://ftp.lanprojekt.cz/pub/network/win95/script.zip that will help you.
-
- === End ===
-