I have been trying to implement a packet sniffer on QNX to read outgoing UDP packets for a software unit test. As far as I am aware, it isn't possible to create a raw socket and set it promiscuous ...

The latest version of the Linux kernel cleans out nearly 100K lines of code, adds file encryption and the Berkeley Packet Filter, plus makes a nod to gamers and mobile devices. The recent release of ...

A security researcher released exploit code for a high-severity vulnerability in Linux kernel eBPF (Extended Berkeley Packet Filter) that can give an attacker increased privileges on Ubuntu machines.

When deciding on a firewall implementation, most Unix-savvy administrators have usually chosen to use ipfilter on OpenBSD for their combination of capabilities and stability, as the capabilities of ...

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 ...

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 ...