rohit raj rajana
network security engineer · germany
i secure networks for a living — firewalls, zero trust, cloud infrastructure, and the bits in between. 5+ years working across palo alto ngfw, cisco asa, aws, and enterprise security tooling.
outside of work i'm building homelab infrastructure, automating workflows with n8n, writing about applied ai in security engineering, and learning german.
know me
age 29.000000000it started with a simple question: how does all of this actually connect? networks. systems. people. invisible threads, quietly carrying everything that matters. that curiosity pulled me in — and 5+ years later, i'm the one mapping the flow, spotting the weak links, and making sure things run the way they're supposed to… not the way attackers hope they will.
along the way, i earned a master's in management information systems from the university of illinois chicago, usa, and before that, a bachelor of technology in computer science from gitam university, visakhapatnam. i'm also ccna (cisco certified network associate) certified — part engineer, part "keeper of the blinking lights," making sure the digital world stays up, running, and a little less chaotic.
but the real story? at my core, i'm driven by faith in god and curiosity. one keeps me grounded. the other keeps pulling me forward.
so i build. i learn. i question things. i automate anything that dares to repeat itself. because if i've done it twice, it's already asking to be scripted.
somewhere between clean network diagrams and late-night troubleshooting, i share what actually works — no fluff, no theory for the sake of sounding smart.
what started as curiosity about how packets move across networks became a full career. 5+ years deploying palo alto ngfw, cisco asa, arista switching, and zero trust architectures — measured against a 20-year career arc, still early days.
if a task happens more than twice, i automate it — n8n is my primary tool. i've built pipelines for content scheduling, receipt processing, birthday messages, and more. the intersection of ai and security engineering is where i spend most of my thinking time these days.
shooting with a sony alpha a6700. started with street photography and architecture. you can follow the photography work at @travellin.soldier →
training is a non-negotiable part of my week. mostly compound lifts — consistency over intensity.
semifinalist in team doubles at UIC's 2024 intramural tournament. the only sport where i actually enjoy the competitive pressure.
long-term focused. investing in ucits etfs with german tax optimization in mind. heavily influenced by naval ravikant's philosophy on wealth creation: own equity, not time.
tech & gadgets
software
gaming
2026
last update: june 2026
a living record of what i'm building, learning, and doing this year.
self-hosted server with casaos/debian
guide coming soonall the workflows i'm running locally
guide coming sooncert prep structured in obsidian
guide coming soonportainer, watchtower, crowdsec, socket proxy
guide coming soonsoc 101, linux 101, active rooms
activemachines and ctf challenges
activework
5+ years securing enterprise networks — firewall deployments, cloud architecture, soc operations, cisco networking and products.
palo alto ngfw, panorama, cisco asa, policy management, nat, ssl inspection
routing (ospf, eigrp, bgp), switching (vlans, stp, etherchannel), layer 2/3 troubleshooting, cisco ios
arista, network segmentation, subnetting, acls, wan/lan design
aws vpc, transit gateway, iam, security groups, scada/ot network security
crowdstrike falcon, nessus, splunk, vulnerability assessment
solarwinds, splunk siem, log analysis, network performance monitoring
zero trust network access (ztna), network segmentation, dmz design
n8n, docker, python scripting, network automation
projects
i build, i break, i fix, i defend — a mix of homelab security research, automation pipelines, and infrastructure work.
penetration testing and ad exploitation in a homelab — kerberoasting, pass-the-hash, smb/llmnr spoofing, and ntlm relay.
homelabpentestingactive directoryosint investigations using maltego, theharvester, and shodan. built sock puppet accounts, automated data collection, and produced threat intelligence reports.
homelabosintproduction-hardened n8n docker environment with portainer, watchtower, crowdsec, and docker socket proxy.
dockersecurity hardeningcentralizing osint tooling into one dashboard for faster recon workflows.
in progressa browser extension that flags suspicious links and sender patterns before a click happens.
in progresswatches dns query patterns for signs of data exfiltration disguised as normal lookups.
in progresszimablade 7700 running casaos/debian. pi-hole, tailscale, portainer, nextcloud, jellyfin.
infrastructureself-hosteddiscovers and maps active devices — building toward a clean visual topology output.
in progressbaselines normal traffic patterns and flags deviations.
in progressdeploying and tuning snort/suricata rule sets for real-time traffic inspection.
in progressend-to-end n8n workflow: google sheets → gpt-4o generation → approval gate → auto-publish to linkedin.
n8ngpt-4on8n pipeline that monitors email for receipts, extracts structured data using ai, and auto-generates invoices.
n8ndocument aireads google calendar & contacts, generates personalized birthday messages with gpt-4o, routes through approval gate.
n8ngoogle apiguides & books
things i've written — and things that shaped how i think.
ztna in a small org without enterprise licensing
coming soonhomelab build guide — casaos, portainer, tailscale
coming soonautomating repetitive security ops with n8n and ai
coming soonchancenkarte process, job market, salary expectations
coming soonbeginner ethical hacking environment at home
coming soonthe ones that left a mark. one honest line on what i actually took from each.
see my full shelf on goodreads →store
things i've made — books, guides, and tools worth your time.
cards, paypal & more — worldwide checkout.
shop on gumroad →upi, netbanking & cards — built for india.
shop on instamojo →resource hub
free notes, templates, and downloads — things you can take and use.
ON
FILE
security engineer.
educator. builder.
5+ yrs enterprise networks · chevron · bath & body works · TCS
helping people learn, build, and grow — no fluff, no theory for theory's sake.
sessions via zoom or google meet · 60 or 90 min · CET (UTC+1) · also works for CST & IST · english & telugu
five 1:1 sessions for the stuff that doesn't fit a cert syllabus — figuring out direction, building momentum, or getting unstuck.
anyone drifting, switching jobs or majors without knowing why.
anyone feeling foggy, on autopilot, or worried about wasting time — at any age.
anyone whose fitness apps fizzled out after two weeks.
students, job seekers, freelancers, creators.
students and professionals who want a real roadmap, not generic search results.
ready to begin a mission?
free 20-min intro call · no commitment · no pressure
contact
have a question, collab idea, or just want to say hi? drop a message below.
| linkedin.com/in/rohit7raj → | |
| instagram.com/rooh7t.studios → | |
| ▶️ YouTube | youtube.com/@itsrooh7t → |
| 🎞️ Photography | instagram.com/travellin.soldier → |
| ✍️ Medium | medium.com/@rooh7t → |
| ☕ Buy Me a Coffee | buymeacoffee.com/rooh7t → |