hping is a free packet generator and analyzer, well suited for testing the security of network devices.Continue reading “Installing and using hping”
I will give an example of the distribution of interrupt network interfaces on the processor cores.
For example, I’ll take a server with accel-ppp, 6Gb/s traffic, 500K + pps, nat with ipoe and 6000 dchp clients.
Also, be sure to disable hyper-threading in the BIOS, since load balancing on virtual cores can greatly increase the load on some physical cores.
I will give an example of viewing on which NUMA node the network interfaces are located in Linux.Continue reading “How to find out on which NUMA node network interfaces”
NetHogs is a network monitoring tool.Continue reading “Installing and Using NetHogs on Linux”
Link aggregation is a technology that allows you to combine several physical channels into one logical channel, which increases the bandwidth and reliability of the channel.Continue reading “LACP. Configuring Link Aggregation on D-Link Switches”
Installation on Ubuntu:Continue reading “Installing and configuring FreeRADIUS”
Check if ipv6 protocol support is enabled or disabled (0 – on, 1 – off):Continue reading “Disabling IPv6 on Linux”
arping – a utility that sends arp packets to a specified host and displays responses.
It is executed from the root user, in Linux, for this, from under a regular user, you can append before each sudo command.
I will give an example of setting up forwarding clients without money to the captive portal when connecting to the network.Continue reading “Captive portal. Configuring ncsi redirect”
Ubuntu / Debian installation command:Continue reading “Installing and Using the TCPTrack Network Console Monitor”