Cloud Academy

 

you should try

https://cloudacademy.com/promos/referral/?inviter=Ruslan&referral=uc32ITlrQeerH-EjFGGsK

Set a range of ports in iptables

 how to list a range of ports in iptables config file you can read there?

it is pretty easy to get how to:

was a simple task to a forward range of ports for the File Zilla FTP Server on a virtual server that is running in Proxmox

to avoid crucial listing of full ports volume like this:

-A INPUT -p tcp -m tcp — dport 20 -j ACCEPT-A INPUT -p tcp -m tcp — dport 21 -j ACCEPT-A FORWARD -d 192.168.1.101/32 -i enp4s0 -p tcp -m tcp — dport 20 -j ACCEPT-A FORWARD -d 192.168.1.101/32 -i enp4s0 -p tcp -m tcp — dport 21 -j ACCEPT-A PREROUTING -i enp4s0 -p tcp -m tcp — dport 20:21 -j DNAT — to-destination 192.168.1.101:20-A PREROUTING -i enp4s0 -p tcp -m tcp — dport 20:21 -j DNAT — to-destination 192.168.1.101:21

we can use listing in the range:

-A INPUT -p tcp -m tcp — dport 20:21 -j ACCEPT-A INPUT -p tcp -m tcp — dport 45000:46000 -j ACCEPT-A FORWARD -d 192.168.1.101/32 -i enp4s0 -p tcp -m tcp — dport 20:21 -j ACCEPT-A FORWARD -d 192.168.1.101/32 -i enp4s0 -p tcp -m tcp — dport 45000:46000 -j ACCEPT-A PREROUTING -i enp4s0 -p tcp -m tcp — dport 20:21 -j DNAT — to-destination 192.168.1.101:20–21-A PREROUTING -i enp4s0 -p tcp -m tcp — dport 45000:46000 -j DNAT — to-destination 192.168.1.101:45000–46000

then it could be applied and saved as rules:

~ # iptables-restore < iptables_rules_20200710_ftp_filezilla~ # iptables-save > iptables_rules_20200710_ftp_filezilla

exactly for File Zilla FTP Server, it should be set the same range of ports for passive mode

Git delete local multi branches

 git branch | grep "<pattern>" | xargs git branch -D

Where are:

1st part gets all local branches

2nd part selects by pattern only

3rd part deletes selected branches

Links:

https://dev.to/lauragift21/git-delete-multiple-branches-5537
https://www.codegrepper.com/code-examples/shell/git+delete+multiple+branches+local
https://git-scm.com/docs/gittutorial

Zabbix server: Utilization of poller processes over 75%

 To solve this issue needs to edit the parameters in the:

/et/zabbiz/zabbix-server.conf

StartPollers=100

StartPollersUnreachable=5

Links:

https://www.sipmann.com/zabbix-poller-processes-more-than-75.html#.Y726-BVByMo

NAS connection

 To Map the network drive device:

Select options:
The suffix in the path (Folder:) should be as a login 

\\uXXXXXX.your-storagebox.de\uXXXXXX-sub1

1 – Select disk (Drive)
2 – Enter the path to the NAS destination
3 – Reconnect if it needs to be accessible automatically
4 – Create and save credentials to avoid entering them again

Enter Login and Password

Create media with Windows 10

 How to create Windows 10 boot USB flash drive

Insert a flash drive of at least 8 GB or large to avoid this warning during the installation drive preparation:

Download the tool from

https://www.microsoft.com/en-us/software-download/windows10

Launch the MediaCreationTool21H2.exe

Accept all warnings till getting a new window:

Accept it either:

Select "Create installation media" and Next:

Unpickup "Use the recommended options for this PC" to be able to select need options:

Choose the media driver:

Select the available USB flash drive:

The next button will start the Windows 10 image writing on flash media:

Finish:

Insert the ready-to-install USB flash drive and boot from it

WordPress Contact Form 7 to Telegram bot

1. create a telegram bot https://core.telegram.org/bots#3-how-do-i-create-a-bot

2. install the Contact Form 7 plugin 

3. install Contact Form 7 + Telegram plugin 

4. configure Contact Form 7 + Telegram plugin
https://wordpress.org/plugins/cf7-telegram/
https://www.pluginforthat.com/plugin/cf7-telegram/ 

5. activate the telegram bot 

6. test messages delivery