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Windows Strengths and Weaknesses
The overwhelming majority of computers, both personal and corporate, use Microsoft windowpanes, which has included Internet approach for overrun a decade and as Windows became more complex, so has its Internet connectivity software. Windows 98 Second Edition introduced Internet Connection Sharing (ICS) to provide group access to the online from a topical anaesthetic network. More complexnesses were added with the outbreak of Routing and Remote Access Service in Widows 2000 Server with its Network Address Translation (NAT) functions.

It took awhile before experts found that ICS experiences specific shortcomings. ICS modifies network card addresses, which can cause problems on intranets. Because of this, ICS can only be used in small office or home networks and even then, ICS in office networks is not recommended, because there is no exploiter authorization or validation with ICS. Still practicing it on a home network makes any connection to the Internet insecure, since it is so easy for criminals to gain access to your computers by falsifying where they are coming from (their IP and MAC addresses).

Some assistance is Needed
Windows can machinate Internet partaking, but security has never been a strong point. In practice either hardware or software solutions from other companies are generally purchased to provide the security solutions needed. One of the more important of these is UserGate Proxy waiter.

UserGate Proxy Server caters local network exploiters with a secure Internet access by defining policies of this access, forbidding particular Internet resources, and limiting traffic or time of a user’s work on the Internet. Additionally, UserGate can keep distinct traffic calculations of users and of communications protocol*, which greatly simplifies Internet dealings cost control. Lately, among Internet Service Providers (ISP) there has been a tendency towards unlimited traffic and for that purpose, UserGate Proxy Server provides a very flexible system of rules.

UserGate Proxy Server with NAT support works on windowpanes 2000/2003/XP with the Internet (practising the standard TCP/IP protocols). UserGate can also work on Windows 98 and Windows NT 4.0, but without NAT support. UserGate does not require any special resources for its operation; it simply needs a relatively small add up of hard drive memory for its squirrel away and log files. UserGate can also be installed on a dedicated computer to maximize your network’s resources.

Proxy Servers
Your web browser (whether it is Internet Explorer, Firefox, Safari, Netscape, Opera or Mozilla to name the most popular) comprises already able to cache documents. How, significant disk space is not reserved for these purposes if the Internet connection is shared by an entire office. The reason for this is that the probability of one person visiting the same web pages is far less than if dozens or hundreds of people are dealing the connection. Creating a more common cache because a company can greatly decrease bandwidth waste as well as make almost instantaneous the receipt of documents that are commonly accessed by employees. UserGate Proxy Server can also link with the external cascade proxy servers (of your web Service Provider) to growth the cannonball along of receiving data and reduce your Internet bills (traffic costs for a provider are usually less when a proxy server is used).

Program Configuration
Configuring the cache settings is done from the «Services» page. The first step embodies to enable the hoard, then you can bent its separate options, which include caching of POST requests, dynamic objects, cookies, and FTP content. You can also set the size of the disc space for the squirrel away and the time-to-live of squirreled away documents.

Added options must also be set before you can start working with the program. As a rule, this task is completed in the following order:

1. Create users of the program.

2. Configure DNS and NAT on the UserGate waiter. At this stage you force out configure NAT using the wizard.

3. Set parameters of the various protocols (HTTP, FTP, SOCKS), the intranet interface on which they will be listened for, and whether cascading will be done. All of these can be set at their in proportion to pages of inspection and repair settings.

Quatern. Configure the network connection on each client computer, including gateway and DNS in TCP/IP in network connection properties, which must be set.

5. Create an Internet access policy.

Modules to Make Things Easier
To make the program further user-friendly, we dual-lane it into respective modules:

The Server module is started at a computer that has Internet access. This module controls the execution of all tasks.

UserGate administration is performed with the help of a special module: UserGate Administrator, which handles all server scopes.

UserGate Authentication Client follows a client practical application installed on each user’s computer. This module monitors and controls user authorization to the UserGate server, if you choose an authorization independent of IP or IP+MAC.

Security and Permissions
UserGate Proxy Server locks out unauthorized access. From each one user can be cleared automatically by their information science address alone or by a correct combination of IP and hardware (MAC) address. Each user can be assigned specific permissions

To make it easy to add users and to quickly assign the same permissions to a mathematical group of similar users a branch page is furnished for the managing of users and groups. Groups make it easy to manage users that should have common settings, including network access and rates. You can create as many groups as you need. Groups are usually produced based on company structure and power structure.

Each mathematical group can be given its own rate that is used to manage Internet access expenses. A default rate can be set or left empty, in which case the connectednesses of all users inward a chemical group are not paid unless a different rate is set in a user’s own properties.

There are a number of default NAT rules provided in the program. These are access rules through Telnet, POP3, SMTP, HTTP, ICQ and other protocols. As setting group dimensions you can key which rules will be applied to the group and its users.

A dial on demand option can be used when an Internet connection is through a modem. In this case the modem dials up the connection only when they are requested. Dial during demand can likewise be used with ADSL, if in order to get connected to the Internet provider it is necessary to dial up a VPN connection. In this case the VPN connective can chivy as dial on duty demand.

If a computer with UserGate is in an Active Directory domain, users can be imported to it and then divided into groups that need similar access rights: authorization type, rate, NAT rules (if group rules do not to the full meet the substance abuser* needs).

Authorization typecasts and Rules
UserGate Proxy Server supports several authorization types, including authorization through Active Directory and Windows Login, which allows integrating UserGate into existing network infrastructures.

UserGate uses its own client authentication module for some types of authorization. Dependant on the eccentric of authorization you select it is necessary to indicate, in user options, either the user’s IP address (or IP address range), assign a login (username and password) or assign just a username. If you deficiency to broadcast to a user, books of their Internet traffic use you can enter the user’s e-mail here.

UserGate rules can be more flexibly configured than RRAS Remote Access Policy. Using rules you can lock memory access to specific uniform resource locator*, limit traffic on-duty certain protocols, set time limits, set a maximum file size that a user can download, etc. Windows does not provide the functionality needed to fulfill these tasks.

Rules give notice be created with the facilitate by the wizard provided. Each rule has application conditions and an object it is executed when one or more conditions are met. For examples, close a connection, assign a rate or fastness, etc. Conditions include protocols ill-used, time of work, a user’s traffic limits (incoming and outgoing), money remaining on account, as well as, IP address list and URL list. Settings also allow the specifying of any filing cabinet extensions that exploiters cannot download.

Incoming a number of organizations the use of instant messengers, such as ICQ, is prohibited. This is easy with UserGate. To prohibit ICQ you simply create a rule, locking forbidden any connective with the innkeeper ‘*login.icq.com*’ and apply it to all users.

UserGate Proxy Server provides rules to allow varying rates for day or night time access, to local or common resources (if such magnetic variation* are offered up by your web provider). For instance, for switching between day and night rates two rules are created: one that performs the switching at a fixed time from day to night rate and the early that switches backward to the sidereal day rate.

DNS and NAT Settings
DNS (Domain Name System) is what is used on the Internet so you don’t have to remember a site’s numbers (its real Internet address), such as 53.128.182.67), but instead you can buoy just remember they are name, such that as www.famatech.com. One of the controlling parts of the Internet’s DNS is the DNS server, which is a computer (there are many DNS servers) on the Internet that renders the constitutes of web site* to their numbers, so when your browser goes to www.famatech.com, the DNS server knows the correct IP number to send the browser request to.

The DNS setting in UserGate Proxy Server is simply the locations (IP addresses) of peerless or cardinal of these URL servers (the closer the DNS server is to your ISP’s physical location, generally the better), where each client’s DNS requests will be forwarded to. It is necessary to indicate the information science address incoming your network interface of UserGate Proxy Server every bit the gateway and domain name server stylish the TCP/IP properties of each user’s network connection on their local computer.

There is another way to set the DNS. You can add a new NAT rule, inwards which the information processing receiver (the intimate interface) and the IP sender (the external interface) are set to port 53 and the protocol to UDP. If you use this method, this rule must be applied to wholly users. In connector settings of each topical anaesthetic computer, the IP address of the ISP’s DNS servers must be set as the DNS and the IP address of UserGate Proxy Server set as the gateway on to each one local computer.

Mail nodes can comprise set either through port mapping or through NAT. If instant messengers are allowed to be used in the organization, the network settings must be changed for them: both exploiter firewall and proxy, the informatics address from the internal network interface of UserGate Proxy Server must be indicated, and the protocol HTTPS or SOCKS needs be selected. If you use Yahoo Messenger, you should keep in creative thinker that when you act through a procurator server, Yahoo’s chat rooms and video chats are unavailable.

Statistics for each user are recorded in a log. These include data on the time each connection started, its duration, total cost, the URLs and IPs visited, the come of bytes had and bytes got off. It is impossible to cancel or falsify the recording of any of this information about user connections in UserGate Proxy Server’s statistics file. The statistics can be viewed either from the waiter Administrator or of a limited module Statistics. Statistics data can be filtered by user, protocol and time period; and these stats can be exported to Microsoft Excel for further processing.

The early interlingual rendition* of UserGate Proxy Server squirreled away only HTTP (online) pages. The latest version introduced new components designed to guarantee information security. Now UserGate users can take advantage of the built-in firewall and Kaspersky Antivirus modules. The firewall give notice control (permit or block off) specific TCP port wine* and can also publish a company’s resources on the Internet. UserGate Proxy Server processes all packets received from the network. Every port that is open in the platform, for example HTTP, bops and other people, are either selected by the administrator or can be opened in the firewall automatically. You can see which ports are open in the auto rules table on the Firewall formulas page.

Future growth plans for UserGate procurator Server include creation of its own VPN server—so you have an alternative VPN solution to that offered by Windows—an introduction of a mail server that has they're own antispam back up and the development from an intelligent firewall at the application level.