In the last issue we started following a packet's journey from the wire up to the higher levels of network stack processing. We left the packet at the end of layer 3 processing, where IP has ...

UDP is a protocol that enables the exchange of unallocated data packets over a network. The UDP buffer is memory that is assigned by the Linux operating system to temporarily contain the data packets ...

I'm trying to make a reliable file transfer service in C using UDP sockets. I already solved the problems related to packets retransmissions, but I can't find a way to make more clients communicate ...

Want to know more about how your system is communicating? Try the Linux ss command. It replaces the older netstat and makes a lot of information about network connections available for you to easily ...

To make the best use of the ss command, it’s important to understand what a socket is. A socket is a type of pseudo file (i.e., not an actual file) that represents a network connection. A socket ...

Network geeks among you may remember my article, “Linux Socket Filter: Sniffing Bytes over the Network”, in the June 2001 issue of LJ, regarding the use of the packet filter built inside the Linux ...