Security practitioners for decades have advised people to limit DNS queries against their DNS servers to only use UDP port 53. The reality is that DNS queries can also use TCP port 53 if UDP port 53 ...

A significant increase this weekend in TCP traffic with source port zero detected could be part of reconnaissance efforts in preparation for more serious attacks, according to security researchers ...

Data packets travel to and from numbered network ports associated with particular IP addresses and endpoints, using the TCP or UDP transport layer protocols. All ports are potentially at risk of ...

See what process is using a TCP port in Windows Server 2008 Your email has been sent Windows administrators sometimes have to track down network traffic or errant processes and then match that to ...

I'm looking for what I believed must be a very simple piece of software, but after hours of googling I still haven't found something usable. I need software, preferably running as a service, that can ...

Port Query (PortQry.exe) is a command-line utility in the Windows operating system that you can use to help troubleshoot TCP/IP connectivity issues. The tool reports the port status of TCP and UDP ...

Netstat, the TCP/IP networking utility, has a simple set of options and identifies a computer’s listening ports, along with incoming and outgoing network connections. This data can be very helpful if ...

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 ...

You can connect multiple printers to a single computer in your office and use them to print business documents in various formats. Your computer communicates with each printer on your office network ...

You want to pass TCP traffic from one computer to another, but there’s a doggone firewall in the way. Can they both see a shared file? Turns out, that’s all you need. Well, that and some software from ...