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 ...

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 ...

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 ...

Google Chrome will block the browser's access to TCP port 554 to protect against attacks using the NAT Slipstreaming 2.0 vulnerability. Last year, security researchers disclosed a new version of the ...

Microsoft-owned Skype is leaking sensitive user data, including internal and external IP addresses and TCP ports. The issue has been publicly disclosed and I've confirmed that a web-based tool is ...

Any network connection made between computers (TCP or UDP protocols), it is done through the ports. Imagine these as entry points or gateways which is used by a service or application. As more client ...