How to Configure Proxy and Firewall On A Computer.

Through the use of features such as proxy servers and firewall you can help prevent unauthorized access to the system

In computer networking, a proxy setting is a system that acts as an intermediary for request for resources. Meanwhile client software can be installed on any client machine and the proxy server. Data request sent from the client gets routed from the client side proxy through a back channel directly to the proxy server.   The key concept part of this relationship is the additional metadata attached to the request by a client proxy that aids with identification once it hits the proxy server.  So in essence the client server and the proxy works together to provide quick identification and access to resources.
Where going to use the following method to configure a client computer:
#1 set the proxy server setting to the correct IP address.
#2  Exception can be made and set to include ranges ( for instance, you can bypass a proxy server if you access anything in the 192.168.x.y scope ).
#3 Proxy setting can be set so that all HTTP or FTP connection use a proxy server, but no other connection.
By default, internet explorer detect proxy settings, but in some environment, ypu might need to manually configure proxy settings with the information supplied by the network administrator, in this case to manually configure  proxy setting, follow my step below:
#1 open internet explorer.
#2 select tools>>> internet options.
#3 on the connection tap, select LAN setting.
# 4 check use proxy server for you LAN.
# 5 in the address box type the address of the proxy server, in the form of an IP address, a URL ( such aas http://proxyfor example).
#6 in the port box type in the port number.
#7 if necessary, select advance and configure separate proxy address for different services.
#8 select okay until you return to internet explorer.

you can also follow this simple step below:

To configure your proxy settings
Open the Internet Options control panel.
Select the Connections tab, and then click the LAN settings button.
Select Bypass proxy server for local addresses, then click the advanced button.
Below Exceptions, add to the list of exceptions.
Click OK.
If you’re using a Firefox proxy extension, you may need to configure it separately.
If you’re using a command-line switch with Chrome to access your proxy, you can add the following to the end of the command to bypass the proxy:

Window firewall settings
 A window client firewall can be configured for networking to ensure that they are secured against unauthorized access attempts and attacks. Consider the following settings when setting up a window firewall
Enable or disabling port security on certain ports .
Inbound and outbound filtering.

During  your firewall configuration, add the following ports to the white list:
6263,   10196,   14826, 24866  25012  38156  46365  49806   55735   59488
Then add the following process to the white list:
%LOCALAPPDATA%1Passwordapp6Agile Bits .

If you’re using 1Password 4, add the folder C:Program Files1Password 4 (or at least all the .exe files in it) instead.

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