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do I have to installed any software to go with Firewall connection ? currenly i have one network card setup and all my users showing as proxy client and securenat client .<br />
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do i have to installed the firewall client software in order to setup the firewall client in the ISA server ? <br />
how can i setup the user login prompt to enter username and password when we click on the browser &nbsp;on securenat setup (like linux web proxy ). is it posible <br />
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do I have to installed any software to go with Firewall connection ? currenly i have one network card setup and all my users showing as proxy client and securenat client .

do i have to installed the firewall client software in order to setup the firewall client in the ISA server ? 
how can i setup the user login prompt to enter username and password when we click on the browser  on securenat setup (like linux web proxy ). is it posible 



ISA Firewall/web proxy and securenat client

Software firewalls, also known as host-based firewalls, provide a layer of software on one host that controls network traffic in and out of that single machine. Most operating systems now include firewall software, but many available software firewalls include central distribution, antivirus systems and disaster recovery.

Software Firewalls

Microsoft Forefront, formerly known as Internet Security and Acceleration Server (ISA Server), is a network router, firewall, antivirus program, VPN server and web cache that runs on Windows servers. It includes identity management and protection systems, and discontinued systems for threat management and network protection, along with protection for Sharepoint and Exchange. The scope of discussions includes forward and reverse proxy, application and service publishing, virtual private networks (VPNs), outbound access rules, SSL certificates and network routing within either a single node or an highly-available array pairing.

Microsoft Forefront ISA Server

The Windows operating systems have distinct methodologies for designing and implementing networks, and have specific systems to accomplish various networking processes, such as Exchange for email, Sharepoint for shared files and programs, and IIS for delivery of web pages. Microsoft also produces server technologies for networked database use, security and virtualization.