Linux – Page 4

Configuring OSPF in BIRD

In this article, I will give an example of configuring OSPF in BIRD.

Renaming Network Interfaces in Linux

Once, after updating the i40e driver for Intel network adapters, I noticed that the names of the network interfaces had changed, and after rebooting the operating system, the names also periodically changed.

Installing and configuring BIRD (BGP)

For example, I will install BIRD on Ubuntu Server 20.04 and show an example of configuring BGP.

Taskset – bind process to CPU cores

By default, processes use all the processor cores, but sometimes it is necessary to release the 0 core, which is usually the most loaded, or assign some processes only to the second CPU, etc., in this case, taskset will help.

Increase the port range net.ipv4.ip_local_port_range

There is a possibility that on a highly loaded server, such as a proxy or router, with a very large number of connections, free ports in the allocated range may run out, so you need to look at the current number used and, if necessary, increase the net.ipv4.ip_local_port_range value.

Clearing Loganalyzer History

In this article, I’ll show you how to clear outdated logs from Loganalyzer.

Setting up BIRD logs

In this article, I will give examples of setting up logs in BIRD.

How to set up RPZ in Bind9 (site blocking)

In this article, I will give a simple example of setting up RPZ in Bind9.
RPZ (Response Policy Zone) allows you to block access to malicious and prohibited sites by domain name, IP address or network, block DNS servers.

ABillS log rotation

Since some ABillS log files gradually increased in size, I wrote a script to rotate these logs.

Setting up a DNS zone in Bind9

In this article, I will give an example of adding a DNS zone to Bind9.