One day I noticed that the cursor was moving very slowly in the browser on the LG 43UK630PBL TV.
Continue reading “LG TV browser cursor moves slowly”Author Archives: Vyacheslav
Port forwarding in iptables on NAT server
Once I needed to forward a port to a VPN server that had a gray IP address and was behind NAT.
Continue reading “Port forwarding in iptables on NAT server”Connecting Tewaycell LiFePO4 batteries to inverters
One day I needed to configure 51.2V 300AH batteries from Tewaycell with PACE BMS so that they could synchronize with SRNE HSI 5kW inverter.
Continue reading “Connecting Tewaycell LiFePO4 batteries to inverters”Zabbix-server process does not terminate
Once I updated Ubuntu server and Zabbix-server by running apt update, apt upgrade, after the update was complete I agreed to restart all updated services, but Zabbix-server continued to be running for 20 minutes and did not restart.
Continue reading “Zabbix-server process does not terminate”Setting up an OpenVPN server on MikroTik
One day some mobile operators started blocking ports to L2TP servers, so I set up a more secure OpenVPN server on MikroTik.
Continue reading “Setting up an OpenVPN server on MikroTik”How to configure MikroTik CAPsMAN v2
For example, I will configure CAPsMAN v2 on MikroTik PowerBox Pro with MikroTik cAP ac access points (RBcAPGi-5acD2nD), instead of PowerBox Pro you can use, for example, MikroTik hEX PoE (RB960PGS), they have 4 POE Out ports, you can connect 2 access points to one POE port, the recommended cable length is up to 80 m, so POE can power 8 access points, but you need a more powerful power supply than the one included, for example, I remember in the PowerBox Pro manual it says that at 24V 1A on the POE port, at 48V 0.5A, so you need a 24V 6A or 8A power supply. If there is not enough current for the access points, then they will reboot when, for example, the CPU is more loaded. Thanks to CAPsMAN, by changing the configuration of wireless interfaces on the main device, such as password, frequencies, etc., they are changed on all access points automatically.
Continue reading “How to configure MikroTik CAPsMAN v2”Installing backup MCUD1 (H901MPSA) in Huawei OLT
For example, I will take several MA5608T with different firmware versions in which only one MCUD1 control board is installed and install the second MCUD1 for backup. The MCUD1 installation process is similar for MA5608 and MA5800-X2.
Continue reading “Installing backup MCUD1 (H901MPSA) in Huawei OLT”Connecting Lifepo4 battery to EPS30-4815AF
I will give an example of how I connected Lifepo4 batteries to the EPS30-4815AF power supply (it contains two 15A power modules).
For example, the first battery was US2000C Pylontech 50Ah 48V.
IPv4 SSH via Kyivstar does not work
Once I turned on the modem mode on my iPhone and connected to it with a laptop via WiFi, then I tried to connect to an SSH server via IPv4 address and got an error, although websites could be opened via IPv4 and IPv6.
Continue reading “IPv4 SSH via Kyivstar does not work”How to add characters to the beginning of each line in Notepad++
One time I had a list of mobile phones and I needed to add the country code before each number, so I used Notepad++.
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