PortExpert is a free application that can give very useful information about all TCP, UDP communications connected to the system and is hence useful to identify potential threats. These days we are ...
When I run Wireshark on my machine, I notice lots of duplicate ACKs and retransmits. Sometimes, the loss will be on initially setting up TCP connections, and others it's during the connection. I think ...
Security and networking platforms for large enterprises and data centers are rapidly evolving in sophistication and performance. In the security space, simple packet-filtering firewalls are evolving ...
When I use the netstat command to look at the open TCP/IP connections on my PC, there are connections that should be closed that are in the TIME_WAIT state. What is this, and why do connections stay ...
We all want, and need, the fastest possible Internet. To give that to its customers, Microsoft is upgrading its TCP/IP networking stack in Windows 10 and Windows Server 2016. These improvements are ...
Do you remember when we used multi-protocol routing for IPX, AppleTalk, and TCP/IP running on the same network? In the 1980s and early 1990s many enterprises had multiple protocols running on the ...
In this tutorial we will discuss the concept of Ports and how they work with IP addresses. If you have not read our article on IP addresses and need a brush up, you can find the article here. If you ...
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