Nmap: A valuable open source tool for network security-up2uguy

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转载Nmap: A valuable open source tool for network security
up2uguy0人评论396人阅读2007-01-08 20:26:39 Nmap: A valuable open source tool for network security

　　Arguing for an increase in your IT security budget is often an arduous task, so many administrators turn to free open source tools to help get the job done. But how can they>　　Nmap (Network Mapper) Security Scanner, written by Fyodor and now up to version 4, provides a wide range of port-scanning techniques designed to rapidly scan networks, large and small, for network exploration and security auditing. This versatile utility can determine what hosts are available on a network, what services those hosts are offering, and what type of packet filters and firewalls are in use. It also has the ability to remotely fingerprint a machine's operating system. Most Unix and Windows platforms are supported, as is Mac OS X and several handheld devices. It is available in both command line and graphical user interface modes, a blessing for those system administrators who are less familiar with working at the command prompt.

　　So why do you need a network scanner? Nmap is a favorite hacker tool, so it makes sense to run your own scan and find open ports and see what information your network is leaking to potential attackers. A Windows machine, for example, can use hundreds of ports to communicate with other machines, and each open port is a potential route in to your network for an attacker. Port scanning with Nmap is a fast and effective way to>