Absolute Beginner's Guide to Personal Firewalls (Absolute by Jerry Lee Ford Jr.

By Jerry Lee Ford Jr.

Absolutely the Beginner's consultant to non-public Firewalls is designed to supply simplified, but thorough firewall info at the such a lot accepted own firewall software program functions to be had for the non specialist firewall patron. moreover, it deals info and hyperlinks to websites that can assist you attempt your defense after your individual firewall is put in.

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Extra resources for Absolute Beginner's Guide to Personal Firewalls (Absolute Beginner's Guide)

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Windows 95, Windows 98, and Windows Me automatically set their TCP/IP receive window to 8KB. Windows NT and Windows 2000 operating systems set their TCP/IP receive window to 16KB. 8Kbps to 56Kbps modem connections. Unfortunately, Microsoft has yet to develop a way to automatically adjust the TCP/IP receive window for high-speed connections. The proper setting for the TCP/IP receive window depends on the amount of latency present in your Internet connection. Latency is a measurement of the time required for a packet to travel to and from your computer on the Internet.

Hardware Firewalls Hardware firewalls are external devices that provide a buffer between your computer and your Internet connection. Most hardware firewalls are designed to connect to cable and DSL connections. Hardware personal firewalls are self-contained devices that interface with your computer via a Web browser. Beyond the Web browser, no additional software is required. Like software firewalls, the features of hardware firewalls vary from vendor to vendor. The available feature set also varies based on price with some vendors offering a number of personal hardware firewalls at different prices.

This address identifies the location of the source computer on the Internet as well as the address of the destination computer. Identifying the source and destination address of each packet is essential to completing the delivery of every packet. When a data packet arrives, the destination computer inspects the packet. If the packet is addressed to the computer it is accepted and processed, otherwise it is disregarded. The assignment of IP addresses is transparent to most users because most ISPs use a protocol known as DHCP or the Dynamic Host Configuration Protocol.

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