IT Blog

Juniper MX. How to send client traffic to a NAT server

Let’s say there is no default route on Juniper MX, or it is not suitable, or client traffic needs to be sent to different NAT servers, in this article I will describe how to do this.

How to change gateway in Linux

Once I needed to change the default gateway on different servers without restarting the network service or rebooting the server, I will give examples of how I did this.

Monitoring Linux directory size in Zabbix

One day I needed to monitor the size of a directory in Zabbix and create a trigger so that Zabbix would notify when the directory size increases.

How to add a blackhole route in Netplan

I will give an example of setting up blackhole routes in Netplan.

How to disable a port on Juniper

I will give an example of disabling/enabling a port on Juniper devices.

Setting up Firewall in Proxmox

I will give an example of enabling and configuring the Firewall in Proxmox. By default, the Firewall is disabled and there are open ports, for example: SSH, 111, 3128, 8006.

How I moved the Windows bootloader to another drive

I once noticed on one computer that if you disconnect drive D, Windows 10 does not start; as it turned out, during the installation of Windows, the bootloader was not installed on drive C. Therefore, I connected drive D back to the computer, started Windows and wrote the bootloader to the disk C.

Setting up ETP48100-B1 with Huawei MA5800

For example, I will connect the ETP48100-B1 power supply to the Huawei MA5800.
The kit included a regular ethernet patch cord with a standard pinout. I connected one side to the ESC port on the Huawei MA5800, and the other to the COM_OUT port on the ETP48100-B1.

How to set up Huawei MA5800

For example, I’ll configure the Huawei MA5800-X15; in fact, the configuration will be similar to the old OLT MA5600.

How to restrict access to the Proxmox WEB interface

I will give an example of restricting access to the Proxmox web interface on port 8006.