dhcpperf is a DHCP load testing tool.
Continue reading “Testing a DHCP server with dhcpperf”Category Archives: Linux
Installing FRRouting on Ubuntu 18.04
For example, I will install FRRouting on Ubuntu 18.04
Continue reading “Installing FRRouting on Ubuntu 18.04”Manual update of cPanel
In this article, I will provide examples of updating cPanel and WHM.
Continue reading “Manual update of cPanel”Installing NetBox on Ubuntu
NetBox is a web application for documenting and management of computer networks.
With a large number of networks, devices, it allows you to visually place it in racks, maintain a database, etc.
For example, I will perform a test installation of NetBox on Ubuntu 18.04.
Description of DNS Amplification Attacks
In this article, I will briefly describe the principle of DDoS DNS Amplification attacks.
Continue reading “Description of DNS Amplification Attacks”Configuring OSPF in Quagga
I will give a simple example of setting up OSPF in Quagga, for the test I will use Hyper-V with a virtual switch and virtual machines running Ubuntu Server 18.04.
Continue reading “Configuring OSPF in Quagga”Installing and configuring xt_NAT
I will give an example of installing and configuring xt_NAT on Ubuntu Server 14.04 with kernel version 4.4.0-142. xt_NAT may not work on newer kernel versions. According to the developer, it should work on Linux Kernel 3.18 and 4.1. To make it work on newer versions of the kernel, you can find patches.
Continue reading “Installing and configuring xt_NAT”Solution for warning Asked to transmit frame type ulaw, while native formats is (g729) read/write = ulaw/ulaw
Once a user made a call and Asterisk began to display a lot of warnings, and there was also no sound:
Continue reading “Solution for warning Asked to transmit frame type ulaw, while native formats is (g729) read/write = ulaw/ulaw”FreeRadius. error solution rlm_sql_mysql: Couldn’t connect to MySQL server
Once I installed FreeRadius 3.0.23, by the way I described the process in the article: ABillS. Installing Freeradius, and optimized some parameters of the MySQL server, after which FreeRadius stopped starting and I saw errors in the logs:
Continue reading “FreeRadius. error solution rlm_sql_mysql: Couldn’t connect to MySQL server”Asterisk. MP3 for Music on hold (moh)
In this article, I will provide an example of setting up MP3 for Music on hold (moh) in Asterisk.
Continue reading “Asterisk. MP3 for Music on hold (moh)”