Proxmox VE 8 (Debian 12) support ends August 2026. PVE 9 (Debian 13) in-place upgrade guide: pve8to9 pre-check, APT sources Bookworm→Trixie, dist-upgrade, cluster rolling upgrade, VM compatibility (machine version, virtio drivers), ZFS rollback scenario, and common issues.
After the April 2026 KB5082063 security update, non-GC DCs in PAM-enabled environments experienced LSASS crashes → restart loops. Microsoft released out-of-band fixes on April 19 (KB5091157, KB5091575). Three scenarios: defer if not yet installed; install out-of-band if currently running; safe mode + wusa /uninstall if boot looping. DSRM password recovery included.
Practical implementation of the 3-2-1-1-0 backup rule with Proxmox Backup Server (PBS): ZFS datastore, deduplication, retention/prune/GC schedules, offsite sync to a second PBS, PBS 4.2 S3 backend, and external S3 Object Lock for immutable backups. Complete ransomware protection. Includes version compatibility table.
Actively exploited XSS zero-day in Exchange Server OWA (CVE-2026-42897). Microsoft released permanent patch KB5094139 on June 9, 2026. Exchange 2016/2019 require ESU Period 2. EEMS temporary mitigation, version table, SU installation procedure, exploitation detection, and Exchange Online migration recommendations.
VMware vCenter Server CVSS 9.8 DCERPC heap overflow (CVE-2024-37079) allows unauthenticated remote code execution. In CISA’s KEV catalog, no workaround. Affected versions table (7.0/8.0), VAMI-based patch steps, exploitation detection, and preventive recommendations.
Microsoft’s June 2026 Patch Tuesday is the largest ever: 206 CVEs + 3 active zero-days (HTTP/2 Bomb, BitLocker bypass, Windows CTF EoP). IIS HTTP.sys mitigation, DC patching order, BitLocker recovery key security, and VS Code GitHub token rotation. Step-by-step priority list and procedure for sysadmins.
How to reset FortiGate admin password using console cable and the maintainer account with bcpb format. FortiOS 7.0.2+ admin-maintainer disable workaround with factory reset method. Version compatibility table included.
Why Do SMEs Become Cyberattack Targets? Small and medium-sized enterprises (SMEs) are becoming increasingly attractive targets for cybercriminals. The main reason is that most SMEs view cybersecurity as a concern only large companies face and do not allocate sufficient budget to this area. Yet a ransomware attack or data breach can mean the complete halt […]
PPTP cannot be enabled from the web UI, so we use the CLI console. After connecting to your Fortinet device, follow the steps in order. – Create a local user. Example: vpnuser – Create a local group and add the users to it. Example: pptp_vpn_gr – Under firewall » address create a new record named […]
In this article we describe how to do IP-MAC binding on a Fortigate firewall. We will build IP-MAC binding in 3 stages from the Fortinet CLI console. You may also connect via telnet or SSH if you prefer. 1. Enable IP-MAC binding on the interface, example:Config system interfaceedit internalset ipmac enableend 2. Configure firewall access […]