https://how.kdek.one/ 2026-04-15T14:46:58+00:00 https://how.kdek.one/ https://how.kdek.one/lib/exe/fetch.php?media=wiki:dokuwiki.svg text/html 2025-05-29T04:43:22+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=basic_linux_administration&rev=1748493802&do=diff Basic Linux Administration * Copy remote file via SSH: scp <Username>@<Domain-OR-IP>:<File-Name> ./Desktop * Delete files which are so many returned 'Argument list too long' if using rm : find -maxdepth 1 -mindepth 1 -type f -name "filename.*" -delete text/html 2025-10-10T05:59:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=dhcp_server&rev=1760075999&do=diff ISC-DHCP-Server Installation * Run the following command to start the installation: sudo apt update sudo apt install isc-dhcp-server * You may check the DHCP version: dhcpd --version * Configure the network interfaces that the DHCP server will use by editing the config file: text/html 2025-05-29T11:41:24+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=exim_command_line&rev=1748518884&do=diff Exim Command Line * This command shows active connections being handled: exiwhat * This command shows a list of all running exim processes: ps -C exim wwwu * This command shows a list of files being accessed by Exim: lsof -c exim text/html 2025-05-29T11:40:11+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=exim&rev=1748518811&do=diff Exim Internet Mailer Common Command Line Check: exim command line Title Port Definition SMTP 25 receive mail SMTP 26 alt. port for receive mail POP3 text/html 2025-10-10T00:12:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=first_setup&rev=1760055128&do=diff First Setup * The easiest method to ensure a completely clean router is to run the CLI command /system reset-configuration no-defaults=yes skip-backup=yes * Or, from WinBox: System > Reset Configuration * Setting up the bridge and assigning an IP address are straightforward processes: text/html 2025-05-27T23:59:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=install_bind_dns_server&rev=1748390373&do=diff Install BIND for DNS Resolver Since we specify the VPN server as the DNS server for clients, we need to run a DNS resolver on the VPN server. * We can install the bind9 DNS server: sudo apt install bind9 * Once installed, BIND will automatically start. Check its status with: text/html 2025-10-30T05:16:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=l2tp_with_ipsec_vpn&rev=1761801392&do=diff L2TP with IPSec VPN * On this example here is the case: * Eth1 connect to ISP (192.168.0.1/24) * Eth3 connect to Local Network (10.1.1.1/24) * First, create the L2TP server: PPP > Interface click L2TP server Enabled: checked Use IPsec: checked IPsec Secret: K@d3k&123 (example value) Click OK text/html 2025-11-04T10:45:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=linux&rev=1762253135&do=diff Linux * Basic Linux Administration * DHCP Server * exim * Logs * Reset Root Password text/html 2025-05-29T11:38:15+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=logs&rev=1748518695&do=diff Linux Logs * View the cause IP address blocked by CSF: cat /var/log/lfd.log | grep <IP-Address> * View the failed IMAP login: cat /var/log/maillog | grep "<Domain>" | grep "imap" | grep "auth failed" text/html 2026-01-28T01:52:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=mikrotik&rev=1769565157&do=diff Mikrotik Notes * First Setup * Wireless Repeater * L2TP with IPSec VPN * PCC Load Balancer text/html 2025-06-23T12:29:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=obtain_let_s_encrypt_trusted_tls_certificate&rev=1750681779&do=diff Let's Encrypt TLS Certificate softEtherVPN server creates a self-signed TLS certificate during the installation process, but we will use Let’s Encrypt certificate. The advantage of using Let’s Encrypt certificate is that it’s free, easier to set up, and trusted by VPN client software. text/html 2025-05-24T06:09:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=others&rev=1748066979&do=diff No others yet. text/html 2026-01-28T01:49:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=pcc_load_balancer&rev=1769564977&do=diff PCC Load Balancer * PCC on RouterOS v6 * PCC on RouterOS v7 text/html 2025-10-10T00:02:40+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=pcc_on_routeros_v6&rev=1760054560&do=diff PCC Load Balancer on RouterOS v6 * On this example here is the case: * Eth1 connect to ISP1 (192.168.0.2/24) * Eth2 connect to ISP2 (192.168.1.2/24) * Eth3 connect to Local Network (10.1.1.1/24) * First, set the IP addresses: * If using DHCP, add them on IP > DHCP Client text/html 2025-10-10T00:03:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=pcc_on_routeros_v7&rev=1760054609&do=diff PCC Load Balancer on RouterOS v7 * On this example here is the case: * Eth1 connect to ISP1 (192.168.0.2/24) * Eth2 connect to ISP2 (192.168.1.2/24) * Eth3 connect to Local Network (10.1.1.1/24) * First, set the IP addresses: * If using DHCP, add them on IP > DHCP Client text/html 2025-10-09T11:49:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=proxmox_disk_storage_operation&rev=1760010548&do=diff Proxmox VE Disk Storage Operation View the storage config: cat /etc/pve/storage.cfg Verify the storage status: pvesm status Mount all storage: mount -a To add a disk: * Datacenter > pve > Disks * select the disk to be added, “Wipe Disk” * text/html 2025-05-29T14:07:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=proxmox_ve_installation&rev=1748527648&do=diff Proxmox VE Installation Create USB boot using: * * Rufus (automatically switched to DD image mode) * * balenaEtcher (compatible by default) * * UNetBootin is not supported yet. text/html 2025-11-10T05:45:48+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=proxmox_ve&rev=1762753548&do=diff Proxmox VE * Proxmox VE Installation * Proxmox VM Start At Boot and Auto Shutdown * Proxmox Disk Storage Operation text/html 2025-11-10T05:56:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=proxmox_vm_start_at_boot_and_auto_shutdown&rev=1762754199&do=diff VM Auto Start (Start At Boot) * Select the VM * Click the menu Options * Double click the Start at boot * Check Start at boot and click OK * Click the menu Start/Shutdown order (Proxmox starts VMs in ascending order, and shuts VMs down in reverse order) text/html 2026-01-22T01:38:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=reset_root_password&rev=1769045909&do=diff Reset Root Password On CentOS & RHEL 1. Reboot and Access GRUB Menu * Reboot the system. * During boot, when GRUB appears, press e to edit the default kernel entry. 2. Edit the Kernel Boot Parameters * Find the line beginning with linux16 text/html 2025-05-29T14:10:24+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=softether_vpn_client&rev=1748527824&do=diff SoftEther VPN Client On Windows (Windows 11): * Download SoftEther VPN Client: SoftEther VPN Client (Ver 4.44, Build 9807, rtm) by the time this guide is made. * Connect to VPN using the credentials. * After successfull connection add the route to your VPN internal text/html 2025-10-03T12:37:21+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=softether_vpn_server_configuration&rev=1759495041&do=diff SoftEther VPN Server Configuration * Use vpncmd to configure SoftEther VPN Server: /opt/softether/vpncmd * Choose 1 to configure the VPN server, * The admin console is listening on port 5555. Enter 127.0.0.1:5555 to access the admin console. * Then press Enter to skip Virtual Hub selection. text/html 2025-05-27T11:55:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=softether_vpn_server_installation&rev=1748346927&do=diff SoftEther VPN Server Installation * Run the following command to download the latest stable version of SoftEther VPN server: wget https://www.softether-download.com/files/softether/v4.42-9798-rtm-2023.06.30-tree/Linux/SoftEther_VPN_Server/64bit_-_Intel_x64_or_AMD64/softether-vpnserver-v4.42-9798-rtm-2023.06.30-linux-x64-64bit.tar.gz text/html 2025-05-29T14:10:00+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=softether_vpn_server&rev=1748527800&do=diff SoftEther VPN Server * SoftEther VPN Server Installation * SoftEther VPN Server Configuration * Install Bind DNS Server * Obtain Let’s Encrypt Trusted TLS Certificate text/html 2025-05-29T14:09:40+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=softether_vpn&rev=1748527780&do=diff SoftEther VPN * SoftEther VPN Server * SoftEther VPN Client text/html 2025-05-29T11:49:53+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=ssl_to_imap_test&rev=1748519393&do=diff SSL to IMAP Test * Test connection: telnet example.com 143 openssl s_client -crlf -connect example.com:993 openssl s_client -connect example.com -tls1_2 nmap --script ssl-enum-ciphers -p 443 example.com * On connection, type: login email@example.com passwordgoeshere list "" "*" select INBOX status INBOX (MESSAGES) fetch 1 ALL logout text/html 2026-01-22T06:52:21+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=start&rev=1769064741&do=diff HOW.KDEK.ONE This website is just for hosting my personal notes: * Mikrotik * Proxmox VE * SoftEther VPN * VirtualBox * Windows * Linux * Others Copyright & Disclaimer All content on this website, including notes, code snippets, and other materials, is provided for personal reference and educational purposes only. You are free to view and use the information, but use it at your own risk. I make no guarantees about the accuracy, completeness, or reliability of the content. I a… text/html 2026-03-08T13:22:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=virtualbox_operation&rev=1772976155&do=diff VirtualBox Operation List running VM: VBoxManage list runningvms Start the VM (for example VM:WinServer, type:headless): VBoxManage startvm "WinServer" --type headless Power Off the VM: VBoxManage controlvm "WinServer" poweroff ---------- Enable VRDE (VirtualBox Remote Display Extension): text/html 2026-01-22T07:43:23+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=virtualbox_scripts&rev=1769067803&do=diff VirtualBox Scripts Script for Check & Start VM This script will check VM status and start inactive VM: #!/bin/bash # List of VirtualBox VM names VM_NAMES=("WinServer" "LinServer") echo "==== VirtualBox VM Checker ====" echo "==== Script from KdeK.One ====" for NAME in "${VM_NAMES[@]}"; do # Check if VM exists EXISTS=$(VBoxManage list vms | grep -w "\"$NAME\"" ) if [ -z "$EXISTS" ]; then echo "[WARNING] VM '$NAME' not found in VirtualBox." continue fi # Check if V… text/html 2026-01-22T06:58:01+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=virtualbox&rev=1769065081&do=diff VirtualBox * VirtualBox Installation on Ubuntu * VirtualBox Operation * VirtualBox Scripts text/html 2025-11-07T01:37:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=windows&rev=1762479448&do=diff Windows Configuration Reset Password (while logged in) * If you are already logged in, open Command Prompt and type the following command: net user USERNAME NEWPASSWORD * Alternatively, use the following command, which will securely prompt you to enter the new password: text/html 2025-11-13T05:05:45+00:00 Anonymous (anonymous@undisclosed.example.com) https://how.kdek.one/doku.php?id=wireless_repeater&rev=1763010345&do=diff Wireless Repeater * Start from empty configuration * Create the Wireless Repeater: Wireless > [Setup Repeater] Interface: <Set-To-Int-With-Band-Required> SSID: <The-SSID> Password: <The-Password> * If success then it will created a virtual wireless (you may change the SSID to distinguish it)