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supachai jaturapromSep 24, 2026 • 7 min read
Debugging a 6-Second JVM Death Loop: A Bytecode Decompilation Story
The Symptom A secondary server in a High Availability (HA) failover cluster kept dying....
#postgres#java#debugging#sysadmin
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Vainamoinen | Pulsed MediaSep 20, 2026 • 6 min read
Your scanner says 7.4.3 is unaffected. It was being rooted
A Proxmox VE auth bypass whose CVE range excludes the exploited version, an attacker who patches the...
#security#devops#linux#sysadmin
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Vainamoinen | Pulsed MediaSep 20, 2026 • 5 min read
Two hosts, one wire, and a hairpin through the router
Two hosts on the same network segment, transfers stuck at single-digit MB/s while the internet ran f...
#networking#linux#sysadmin#debugging
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Josh HallSep 22, 2026 • 2 min read
Homelab Capacity Planning: What If a Node Dies Tonight?
Every dashboard in my rack could tell me what was happening right now — and not one could answer the...
#homelab#proxmox#sysadmin#devops
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JJozzieTechSep 24, 2026 • 12 min read
Five layers, one migration — what a fabric cutover exposed about storage
The plan was a network change with a storage flavour. Move a Windows workload and two TrueNAS server...
#truenas#storage#homelab#sysadmin
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אחיה כהןSep 24, 2026 • 5 min read
My sudo Logs Hit 10 GB. Session Count Told Me Nothing.
I measured every sudo I/O log across my production fleet. The server with 3.5x more sudo sessions ha...
#linux#devops#sysadmin#discuss
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IT And OfficeSep 22, 2026 • 4 min read
Build a budget Proxmox host with a used enterprise server
Running Proxmox VE on a $150 mini PC is fine until you actually want to do something with it — a few...
#homelab#virtualization#proxmox#sysadmin
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IT And OfficeSep 21, 2026 • 4 min read
How to choose a used FortiGate firewall (without getting burned)
Used enterprise firewalls are one of the best deals in homelab and small-office hardware. A FortiGat...
#networking#security#homelab#sysadmin
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Jane LiuSep 22, 2026 • 2 min read
Cerberus FTP Server vs Syncplify: What I Learned After Switching Our Secure File Transfer Setup
We'd been running Cerberus FTP Server for a few years and it did the job well enough. Reliable,...
#security#sftp#devops#sysadmin
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Vainamoinen | Pulsed MediaSep 25, 2026 • 5 min read
How a root job following a symlink becomes local root
A root job writing a file into a user's home can follow a symlink the user planted — CWE-59 to local...
#security#devops#linux#sysadmin
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Hamdi Sep 24, 2026 • 3 min read
Building a NextDNS Alternative: Dual-Engine Android, Zero-App iOS Adblocking, and Router DNS
(Hi DEV community! I'm a solo developer working on network security. I wanted to share a privacy...
#showdev#privacy#android#sysadmin
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Jane LiuSep 21, 2026 • 2 min read
5 Signs Your Secure File Transfer Setup Isn't As Secure As You Think
Most sysadmins I've talked to assume their file transfer setup is fine because it hasn't caused...
#security#sftp#devops#sysadmin
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Nguyen DongSep 21, 2026 • 3 min read
Sixteen detection vendors, one TLS check, and nobody is near the 47-day floor
On 2026-09-21 I opened the public front door of sixteen detection and SOC vendors, one browser...
#security#tls#devops#sysadmin
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Jane LiuSep 21, 2026 • 3 min read
Title: SFTP in Healthcare: What Most IT Teams Get Wrong About HIPAA Compliant File Transfer
Healthcare IT has a reputation for being behind the curve on security, and having worked in this...
#security#sftp#healthcare#sysadmin
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Christopher SmithSep 23, 2026 • 6 min read
What Polling, auditd, and eBPF Can See Through Linux RMM Agents
This post first appeared on the ET Ducky blog. I build ET Ducky, an RMM that reads ETW on Windows an...
#linux#ebpf#monitoring#sysadmin
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AnguisheSep 24, 2026 • 4 min read
I Killed My Report Script Mid-Write. The Output File Never Noticed.
SIGTERM halfway through a CSV write: exit 143, the temp file gone, yesterday's complete output untou...
#bash#linux#devops#sysadmin
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DalSep 24, 2026 • 3 min read
Recovering a Dead Ubuntu VPS After an IP Change: VNC Recovery, /32 On-Link Routing, and systemd-networkd
تعویض IP عمومی در سرورهای ابری قرار است یک کار روتین باشد؛ اما در ایمیجهای سبک (Minimized Ubuntu)،....
#linux#devops#networking#sysadmin
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serverkueche.deSep 21, 2026 • 6 min read
Understanding systemd: Units, Journal & Timers (instead of Cron)
Every service on your server – SSH, Docker, the firewall – is started, supervised and logged by...
#linux#sysadmin#tutorial#selfhosted
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serverkueche.deSep 25, 2026 • 4 min read
Hardening SSH access
After the initial setup we harden the SSH access – the most important door to your server. ...
#linux#security#sysadmin
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serverkueche.deSep 24, 2026 • 5 min read
unattended-upgrades: automatic security updates for Debian
"Remember to install updates weekly" – this sentence from the maintenance sections of the other...
#linux#security#sysadmin
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serverkueche.deSep 24, 2026 • 6 min read
netcup snapshots & the Server Control Panel (SCP)
Before you do something risky on the server – a big update, a delicate config change – you want a...
#selfhosted#backup#sysadmin
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LOL PcSep 22, 2026 • 1 min read
MFA en entornos empresariales: correo, VPN y cuentas administrativas
MFA en entornos empresariales: correo, VPN y cuentas administrativas Una contraseña...
#security#mfa#cybersecurity#sysadmin
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LOL PcSep 22, 2026 • 1 min read
Migraciones de puestos Windows en pymes: checklist técnica para evitar sorpresas
Migraciones de puestos Windows en pymes: checklist técnica para evitar sorpresas En una...
#windows#sysadmin#productivity#it
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Frank ZhangSep 24, 2026 • 6 min read
Hardening Enterprise Layer 2: How DHCP Snooping, DAI, and IP Source Guard Work in Tandem
When engineering network security, teams often fixate on perimeter firewalls, WAFs, and endpoint EDR...
#security#networking#sysadmin#infrastructure
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