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Backup and restore configuration using Secure SHell (SSH)
scp must be enabled enable conf t ssh enable scopy dump running-config into file copy running-co...
Backup and restore configuration using Trivial File Transfer Protocol (TFTP)
Run tftp server (pumkin on tftpd) Ensure tftp server is listening ping 192.168.74.129 Backup (fr...
tftp on MacOS v26 (Tahoe) [CANCELLED]
preface tftp was depreciated from macOS. lesson (might be useful) Check is it available ls /usr/l...
Software supported on MacOS v26 (Tahoe)
All applications listed below are 64-bit versions for ARM M5 CPU. Developer Software ...
Icinga2 agent on Debian13 (trixie)
(On Raspberry PI) apt install \ icinga2 \ monitoring-plugins \ monitoring-plugins-bas...
Fresh installation
apt update Install tools, utils apt install \ tcpdump \ ncdu \ htop \ rpi-connect...
Raspberry PI Connect
CLI only (without graphics) Install PAM agent sudo apt install rpi-connect-lite Enable PAM agent...
Software supported on MacOS v10.15.7 (Catalina)
All applications listed below are 64-bit versions. Catalina is 64-bit only. Developer S...
Software supported on MacOS v12.7.6 (Monterey)
All applications listed below are 32-bit versions. Developer Software Confirmed late...
Obtain and activate free 3DES-AES license for Cisco ASA5505 from Cisco?
Get free license from Cisco Proceed with normal registration to get Cisco ID. https://software.ci...
Asterisk and FreePBX on Debian12
Asterisk Preparations Create new user in Cloud SQL https://console.cloud.google.com/sql/instances...
Encryption
Enable encryption app (functionality) sudo -u www-data php /var/www/nextcloud/occ app:enable encr...
2025-09-19 - Summer hurries not over yet
Closed cloud perimeter for direct SSH access, adjusted firewall policies. Mail client to suppo...
2025-07-26 - here and there
Deployed PAM solution: goTeleport Garmin Boating (former Navionics) on Android tablet for a week...
Firmware upgrade
Login into ASA (SSH or serial port) Provide 'enable' password enable Prepare files on TFTP serve...
Software supported on Windows XP (WinXP)
All applications listed below are 32-bit versions. Developer Software Confirmed late...
Major version upgrdae
Upgrade major version apt update apt upgrade -y shutdown -r now apt install update-manager-core ...
Fail2Ban - securing services and web applications
Determine, which firewall is running systemctl is-active ufw ufw status systemctl is-active nfta...
Moving most consuming directory to the separate disk
In my case, one directory is consuming most of the disk space dedicated for the system. Stop the ...
Research on alternative to native Calendar application in MacOS
Disadvantages or "What could be done better" Creating overlapping event The biggest challenge in...