psauxit@istanbul: ~/build.log building
system-monitor live
psauxit@istanbul:~$ ps aux

5 processes · auto-refreshing

PID%CPU%MEMCOMMAND
10012.10.4cics-region07 — core-banking txn monitor
10020.60.1iso8583-gateway --auth --realtime
10031.40.3swift-mt103-router --settlement-queue
10040.30.1ledger-recon --eod --batch
10053.80.9hsm-keyrotate --pcidss --silent
psauxit@istanbul:~$

Open-source engineering for Linux, security and infrastructure.

PSAUX IT is an engineering organisation in Istanbul. We build and maintain open-source software for Linux infrastructure, server security and automation, and we run everything we publish ourselves first.

$ whoami

About PSAUX IT

We are a team of developers, researchers and sysadmins who work across Linux, networking and security. We build open-source software for the problems we meet in real infrastructure, then publish it under open licenses so anyone can use, audit and improve it.

For clients, we take the same approach to hardening, automation and performance work: documented, reproducible and free of vendor lock-in.

$ ls -la ./projects

What we maintain

-rwx
nginx-fastcgi-cache-purge-and-preloadOur flagship project — NPP purges and preloads Nginx FastCGI cache straight from wp-admin, no server access required. Actively maintained.
PHP
-rwx
wordpress-nginx-cache-dockerA full Docker stack — WordPress, PHP-FPM, Nginx FastCGI cache, MySQL and WP-CLI — pre-wired for testing and running NPP.
Docker
-rwx
woocommerce-aras-kargoA pluginless, server-side bash integration between WooCommerce and Aras Kargo shipping — no plugin bloat, just cron and the API.
Shell
-rwx
safexecAllowlist-based exec wrapper with privilege dropping, absolute-path pinning and cgroup/rlimit isolation.
C
-rwx
spy-openvpn-clientContent filtering and DNS-over-HTTPS for OpenVPN clients, enforced through BIND and DNSCrypt at the resolver level.
Shell
-rwx
fail2ban-abuseipdbReports Fail2Ban bans to AbuseIPDB with SQLite tracking, per-IP locking and rate-limit handling.
Shell
-rwx
c0pinLinux CPU tuning for predictable responsiveness, with performance policies and DMA latency control.
C

$ cat /etc/psauxit/infra.conf

Infrastructure & security

We run our own nameservers and mail, and spend a fair amount of time on the defensive side — reporting abuse and hardening the boxes we're responsible for.

nameservers 2/2 up
ns1.psauxit.comup
ns2.psauxit.comup
90-day uptime
mail server operational
mail.psauxit.comup
90-day uptime
abuseipdb contributor
active reporting flagging malicious ips
this session live
uptime 00:00:00

$ mail -s "let's talk"

Get in touch

contact

We're always up for talking to developers, researchers, front-end folks and security analysts who want to build open source with us — or clients who need someone who actually reads the man page first.

psauxit@istanbul:~$ dig +noall +answer psauxit.com ANY

;; ANSWER SECTION:

;; Query time: 7 msec · SERVER: 127.0.0.1#53(localhost)

psst — this terminal is live, try a command ↓

type help for a list of commands, or press ⌘K
guest@psauxit:~$
try: