The Right Stuff Behind PJ Networks’ NOC Operations

Third coffee and I’m firing up the laptop to start writing about what really happens behind the scenes here at PJ Networks’ Network Operations Center (NOC). Why take tools and technologies so seriously? After all, the right NOC tech stack is everything. You may have the best network engineers in the world, but without good network management software and monitoring tools, you’re effectively just guessing — and in cyber security, guess work gets very expensive very fast.

I’ve been through it all from day back in ’93 as a network admin – oh yeah, flashback to those managing PSTN lines and multiplexers. Like that notorious Slammer worm, spreading through networks quicker than office gossip in the teatime break. It let me experience up close why visibility and swift detection are important. Jump ahead to make it to today and with PJ Networks, our NOC isn’t only watching interfaces come on line. To say that it is a workhorse, with monitoring, analysis and automated response all built in, is to call it similar to a firecracker.

And trust me — we’ve learned from the good (and the bad). Already helped overhaul zero-trust architecture at three banks recently; the polished toolchain we depend on there is not something we have a callous attitude toward.

Now, onto our toolbox.

Centralized Monitoring Solutions

Zabbix, SolarWinds, PRTG are the cornerstones of our monitoring arsenal.

• Zabbix (v6.0, LTS 2023 release): Open source, flexible, and can be a bit of a bear to implement but wow, when its humming, you get custom dashboards, alerting, and deep SNMP monitoring. We use Zabbix heavily for infrastructure monitoring — routers, firewalls, servers — you got it.
• SolarWinds NPM (2022.4): Sure, SolarWinds is the company whose name is forever associated with a particularly nasty breach, but its network performance monitor has both aged well and accumulated depth. It’s a robust commercial solution for the corporate office at scale. Its UI didn’t feel a day older, but it was satisfied for clients who need polish in vendor support. Licenses between friends can be expensive, and my wallet still hurts from this one.
• PRTG Network Monitor (v23.x): Especially good for the small to mid-sized client environments we support. With PRTG being based on a sensor model, you’re paying only for what you want: good news and bad. Other times, you forget to turn off sensors and get hit with surprise charges.

These utilities combined are the bread and butter of our monitoring. They send data to our consolidated dashboards — so whatever part of India I’m sitting in, whether at my desk or halfway across the country, I get the same big picture.

SIEM & Log Management

Hovering over us like a pair of air traffic controllers are our Security Information and Event Management systems — because what good is collecting logs if you’re not looking at them.

• Splunk Enterprise 9.0 (2023 update): The reigning champ of SIEM. Our threat hunting and forensics teams are kept busy with its capacity to ingest and correlate huge log streams from different sources. Since the licensing is volume based (daily ingestion) we have to keep a pretty watchful eye on logs coming in. I once got burnt by a spike during a DDoS attack so learned to throttle wisely.
• Elastic Stack 8.x (ELK): This is our OSS swiss army knife for log analytics. We use Elasticsearch for realtime querying, Logstash for data processing and Kibana for an intuitive visualisation. It does the job brilliantly alongside Splunk — and the cost savings will be reinvested in spinning up more instances for focused jobs.

The two work silently in the background, surfacing valuable insights, from anomalies, suspicious login attempts to failed firewall rules and so much more. Without these, you’re peeing in the wind in cybersecurity.

Application Performance Monitoring

Now, this is where network management software intersects with user experience. Monitoring apps is everything.

• Dynatrace (v1.254): This is not only about uptime, it is AI (and yes, I am skeptical) but the root cause analytics are truly next level. Provides us with an end-to-end visibility of our full stack from the UI to our backend databases. I use it when we’re consulting for banks — when you can’t afford to lose a second.
• AppDynamics (v22.4): Like Dynatrace, but more focused on business transaction monitoring. Understanding how network problems effect your cash flow? Priceless.

These tools integrate with our dashboards so well — and provide ops teams with instant context to issues caught in the network layers.

Packet Capture & Deep Packet Inspection

We used to spend hours with hand-held packet analyzers (it feels retro to say that). Nowadays, the tools have evolved.

• Wireshark (v4.0.7): The granddaddy of packet analysis. Still indispensable for deep dives into network traffic anomalies. Our forensic guys love it — its decoding abilities are still superior.
• Cisco Secure Network Analytics (Stealthwatch): Flow analytics and behavioral anomaly detection at enterprise scale. We add this to our SIEM to alert on odd traffic patterns before they progress to incidents.
• Suricata (v6.0): OS IDS/IPS which some of our inline traffic analysis uses for blocking. It’s flexible and scriptable—adds nicely into our automation scripts.

Remember Slammer? Packet capture was critical then. Today, these are the tools that aid us in discovering everything from botnet command-and-control chatter to slick lateral movement within internal networks.

Automation & Orchestration

Manual configs? Please. In the early 2000s I did a few nights of hands on configuring of routers and firewall ACL’s, it was hell. Automation is the unsung hero of our NOC.

• Ansible (v2.15): The configuration management and orchestration mule team. We also schedule software policies, firmware upgrades, and state checks. Playbooks are our cookbook — and believe me, a good recipe prevents more headaches than you think!
• Terraform (v1.5): Employed at the intersection of infrastructure-as-code and cloud environments. Our Terraform-based network configurations let us spin up virtual firewalls and routers uniformly.

These platforms are closely integrated with our monitoring tools — when Ansible enforces a new policy, for example, our SIEM and APM adjust their thresholds automatically. Zero-touch — because in cybersecurity, seconds could count.

Conclusion & Future Tech Roadmap

The thing of it is, though; the technology stack that we run at PJ Networks isn’t set in stone. Networks change, threats mutate, and so must our toolkit. I’m still high off of DefCon’s hardware hacking village, and we’re looking at how to fit better integration of hardware-level monitoring (even oldschool serial consoles have their place)!

AI-powered everything? I remain cautiously optimistic. Until these tools demonstrate that they are not just black boxes, I’d rather have transparency and control.

What’s next:

• Greater integration of behavioral analytics to identify insider threats more quickly.
• Extending automation to incident response playbooks.
• Zero-trust network access tech as an experiment — not just enforcing policy but in real-time, with adaptive control.

To all the CISOs, network admins, and security pros reading this — don’t sleep on your NOC’s tech stack. It’s your inside skin in a universe where assaults occur at the speed of light.

Quick Take

• Core monitoring platforms such as Zabbix, SolarWinds, PRTG offer infrastructure level visibility.
• SIEM tools (Splunk, Elastic Stack) are your control room looking at logs — don’t skimp here.
• APM (Dynatrace, AppDynamics) relates network health to real-world user impact.
• Packet capture tools (Wireshark, Suricata) are your Sherlock Holmes for suspicious traffic.
• Automation platforms (Ansible, Terraform) for speed, reliability and standardisation.

If you’re still setting each router up by hand or grepping logs by hand – well, there’s no better time to modernize your PJ Networks toolchain! Your safety and sanity will thank you.

— Sanjay Seth, PJ Networks Pvt Ltd