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I am using the server as ethernet router (NAT) and have 2 Nic one internal and one external. I want to allow selected IP addresses and ports on the external Nic. I am using file sharing for selected computers.
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How do I close ports and assign wich ip addresses can access my server who is running Routing and Remote Access ?<br />

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How do I close ports and assign wich ip addresses can access my server who is running Routing and Remote Access ?


I am using the server as ethernet router (NAT) and have 2 Nic one internal and one external. I want to allow selected IP addresses and ports on the external Nic. I am using file sharing for selected computers.

Need to close all ports except 445 and 3389 and restrict ip addresses

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

Servers are computing devices that are similar to desktop computers in that they have the same basic components, but are significantly different in size, configuration and purpose. Servers are usually accessed over a network, and many run unattended, without a computer monitor, input device, audio hardware or USB interfaces. Many servers do not have a graphical user interface (GUI), and are configured and managed remotely. Servers typically include hardware redundancy such as dual power supplies, RAID disk systems, and ECC memory, along with extensive pre-boot memory testing and verification. Critical components might be hot swappable, and to guard against overheating, servers might have more powerful fans or use water cooling.