My firewall solution for RDP

Today I stumbled upon this V2EX post (Simplified Chinese) where the OP shared their PowerShell implementation of a “makeshift fail2ban” for RDP (their GitHub repository). Their script looked very c...

2 minute read

Understanding ZFS block sizes

ZFS is about the most complex filesystem for single-node storage servers. Coming with its sophistication is its equally confusing “block size”, which is normally self-evident on common filesystems ...

10 minute read

Debugging Proxmox VE Firewall Dropping TCP Reset Packets

A few days back when I was setting up a new VM to host some extra websites, I noticed an unexpected Nginx error page. As I don’t administer the new websites, I just added reverse proxy rules on the...

11 minute read

Prolonging eMMC Life Span with Proxmox VE

Since my blog on installing Proxmox VE on eMMC, there’s been a lot of discussion over the Internet on this. I suspect that Proxmox decided not to include eMMCs in their hardware options by design, ...

6 minute read

Centralized Linux authentication with OpenLDAP

LDAP, the #1 way to get your graduation delayed (as has always been the meme around Tsinghua University), is every SysAdmin’s dream tool for their servers. As mighty as its rumors fly, LDAP takes t...

14 minute read

Install Proxmox VE on eMMC

Recently I bought a mini PC looking forward to setting up a home router. It started quite well except the specs were higher than I anticipated. 8 GB RAM plus 128 GB eMMC - too much waste for “just ...

2 minute read