Once on the same server running cPanel, CSF (Config Server Firewall) and LFD (Login Failure Daemon) I wanted to run the Speedtest CLI, but it did not start because it could not connect to the servers, I opened the CSF settings through the WHM panel (at the very bottom menu “ConfigServer Security & Firewall” – “Firewall Configuration”), where he discovered that only a few outgoing ports were open:
Continue reading “How to allow all outgoing ports in CSF”Author Archives: Vyacheslav
Installing and using Speedtest CLI
In this article, I will give an example of installing and running the Speedtest CLI.
Continue reading “Installing and using Speedtest CLI”Solution for Speedtest CLI error “Failed to find a working test server”
Once, when running the Speedtest CLI on one Linux server, I noticed the following error:
Continue reading “Solution for Speedtest CLI error “Failed to find a working test server””List and description of existing Wi-Fi frequencies, standards
In this article I will provide a list and description of existing Wi-Fi frequencies, standards.
Continue reading “List and description of existing Wi-Fi frequencies, standards”Automatic switching between backup channels on MikroTik (RouterOS)
Suppose there are two Internet channels, from different or one provider, the gateway can be the same, it does not matter. They are connected to the first and second ports.
Continue reading “Automatic switching between backup channels on MikroTik (RouterOS)”Nginx. Parameter default_server
The default_server parameter defines the default server to which a client request will be sent in which the host field is empty or an unknown domain is specified in it. For example, when a client opens the server IP address in a browser, or when the server has several domains, for example, ixnfo.com, test1.ixnfo.com, test2.ixnfo.com, but not all domains are specified in the ngixn configuration.
Continue reading “Nginx. Parameter default_server”Installing Memcached
Let me give you an example of installing Memcached, which allows you to cache data in RAM.
Continue reading “Installing Memcached”ABillS. How to run periodic on January 2
Once, one Internet provider asked me that ABillS should not charge the subscription on New Year’s Eve, so that users who forgot to replenish their account do not disconnect at midnight.
Continue reading “ABillS. How to run periodic on January 2”UniPing v3 firmware update
To update the software on a UniPing v3 device, you must:
Continue reading “UniPing v3 firmware update”Solution the error “rc_avpair_new: unknown attribute 1490026597”
I noticed once an error in the logs /var/log/syslog:
Continue reading “Solution the error “rc_avpair_new: unknown attribute 1490026597””