You may have heard horror stories about how easy it is for evil system crackers to probe potential victims' systems for vulnerabilities using software tools readily available on the Internet. The bad ...
The great thing about tools is that you often can misuse them for a completely different purpose. The end of a screwdriver makes a passable hammer; a butter knife can be a screwdriver, and even a ...
[b]modem scan nmap[/b][b][/b] sudo nmap -v -O --osscan-guess 192.168.0.1/24 map scan report for 192.168.0.8 Host is up (0.0070s latency). Not shown: 999 closed ports PORT STATE SERVICE 5555/tcp open ...
It's probably X. Adding “-nolisten tcp” to the line that launches X in “/etc/X11/kdm/Xservers” will stop X from listening on that port.<P>For example, the ...
So far, in my previous articles on Nmap, we've looked at how the scanner can be used to map and audit a network, as well as track down noncompliant devices and services. But hackers can also use Nmap ...
Linux systems provide a lot of useful commands for reviewing network configuration and connections. Here's a look at a few, including ifquery, ifup, ifdown and ifconfig. There are a lot of commands ...
A number of weeks ago, I provided and described a script that uses nmap to quickly scan a system or subnet for activity on a particular port. Useful for detecting, say, web servers or Oracle ...
Netcat lets you read from and write to network connections using TCP or UDP, enabling simple tasks like checking if a specific port on a computer is open and reachable (port scanning), transferring ...
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