Description

A focused course, tailored for you

The Nigerian Bank Network Security Engineer Playbook

Firewall rule reviews, IPS tuning, segmentation evidence, and CBN-aligned operational runbooks for the engineer holding the perimeter at a Nigerian commercial bank.

The CBN examiner does not care that your firewall rule base works. They care whether you can prove the last review happened, who approved each permit, and which permits should have been retired three migrations ago.

$199 one-time

Tailored to your situation. Access within 24 hours. 30-day money-back.

Includes a hand-built implementation playbook delivered alongside course access, generated for your specific situation.

Why this course

Network Security Engineers at Nigerian commercial banks sit at the intersection of three pressures that rarely converge cleanly. The first is operational: the rule base grows every week as new payment partners, NIBSS integrations, agent banking subnets, USSD gateways, and core banking interfaces light up, and every permit added is a permit that may never be retired. The second is regulatory: the CBN cybersecurity framework, plus PCI-DSS for the cardholder zone, plus the operational risk expectations the Risk Management Directorate folds into internal audit cycles, all expect documented rule-base reviews, demonstrated segmentation, and evidence that the IPS is tuned to the bank's actual traffic. The third is forensic: when an incident lands, the same rule base and IPS logs that defended the perimeter have to reconstruct what happened, for the regulator and for the SOC report. The engineer is the only person in the bank who can speak fluently to all three pressures. The playbook is the artefact pack that lets you do it without staying late every Friday writing justifications from memory.

What you walk away with

Run a firewall rule-base review on a cadence the CBN examiner accepts as evidence, with a documented justification per rule and a retirement decision for dead permits.
Produce a segmentation diagram and supporting evidence pack that demonstrates cardholder-zone isolation to both the PCI-DSS QSA and the CBN examiner without rework.
Tune the IPS policy so the alert volume reaching the SOC is the alert volume that actually represents risk to the bank, with a written tuning rationale per signature class.
Stand up a lateral movement test the bank can run itself, quarterly, before the regulator or an external party runs it for you.
Build a rule-decommission process that finally clears the permits accumulated across the last two or three core banking migrations, with audit trail.

The 12 modules

Module 1. The CBN cybersecurity framework expectations that land on the network team

Walks through the specific CBN cybersecurity framework clauses that the network team is actually accountable for, separating them from the clauses that belong to identity, application, and SOC teams. Maps each clause to a concrete artefact (rule register, segmentation diagram, IPS policy document, change-control log) so the engineer can answer the examiner with documents, not narrative. Includes the cross-walk to the Risk Management Directorate's operational risk expectations.

Module 2. The firewall rule-base review cadence and evidence pack

Establishes the quarterly rule-base review cadence that the CBN examiner accepts as evidence. Defines the per-rule justification format, the business-owner sign-off trail, and the retirement decision template. Includes the rule-aging report query for the major firewall platforms in use at Nigerian banks (Palo Alto, Fortinet, Check Point) and the working-papers structure the auditor expects to receive.

Module 3. Segmentation between the cardholder zone and the rest of the bank

Builds the segmentation diagram that satisfies both the PCI-DSS QSA and the CBN examiner from a single source of truth. Covers the cardholder data environment boundary, the NIBSS interconnect zone, the agent banking subnet, the USSD gateway path, and the core banking interface. Includes the flow-matrix template, the compensating-control narrative for shared infrastructure, and the evidence pack format the QSA accepts without follow-up requests.

Module 4. IPS tuning, signature management, and the alert-volume narrative

Converts an out-of-the-box IPS policy into a tuned policy that reflects the bank's actual traffic and threat exposure. Covers signature triage, false-positive suppression with documented rationale, custom signature creation for Nigerian banking-specific threats (card-skimming families, NIBSS-themed phishing landing pages, mobile banking app abuse), and the tuning log that explains the policy to internal audit. Output is a defendable IPS posture document.

Module 5. Lateral movement testing the bank runs on itself

Stands up a quarterly internal lateral movement test the network team runs itself, before any external party runs it for them. Covers test design from a compromised teller workstation, from a compromised branch router, from a compromised payment partner interconnect, and from a compromised agent banking aggregator. Includes the test plan template, the rules-of-engagement document for internal coordination, and the findings report format the CISO can present to the board.

Module 6. The change-control packet that survives audit

Reworks the firewall change-control workflow so each change carries the four artefacts the auditor wants without the engineer staying late on Friday. Covers the business justification capture, the risk-rating decision, the rollback plan, and the post-change verification step. Includes the change-control template that integrates with the bank's existing ITSM platform (BMC Remedy, ServiceNow, Jira Service Management) and the weekly close-out report format.

Module 7. Rule decommission across two or three core migrations of permit debt

Provides the rule-decommission process that finally clears the permits accumulated since the last two or three core banking migrations. Covers traffic-analysis methodology to identify candidates for retirement, the business-owner re-attestation workflow, the safe-shadow phase before deletion, and the audit trail format. Most rule bases at Nigerian commercial banks carry 15 to 30 percent dead permits. This module clears them with documented evidence.

Module 8. Logging, retention, and the forensic reconstruction the regulator asks for

Designs the firewall and IPS logging configuration that supports forensic reconstruction during an incident, not just operational monitoring. Covers the log fields required for incident reconstruction, the retention period the CBN examiner expects, the SIEM forwarding configuration, and the chain-of-custody process for log evidence. Includes the incident-reconstruction working-paper template and the SOC handoff format.

Module 9. Payment partner and NIBSS interconnect controls

Documents the network controls applied to payment partner and NIBSS interconnects, where most third-party-introduced risk reaches the bank. Covers the interconnect risk-rating methodology, the rule-set template per partner type (acquirer, switch, fintech aggregator), the joint-monitoring agreement, and the partner-side evidence the bank should retain. Includes the interconnect inventory format the examiner expects to see.

Module 10. Mobile banking, USSD, and agent banking perimeter controls

Addresses the three channels where Nigerian retail banking volume actually flows and where the perimeter has the messiest definition. Covers the mobile banking API gateway controls, the USSD signalling-network exposure, the agent banking aggregator subnet posture, and the threat models for each channel. Output is a per-channel control-design document the engineer can defend to both audit and the digital channels team.

Module 11. Coordination with the SOC, the identity team, and application security

Codifies the operating model between the network team and the rest of information security so that handoffs are documented and incidents do not lose time to interface friction. Covers the alert-handoff specification with the SOC, the firewall-identity correlation specification with the identity team, and the application-perimeter shared-responsibility map with the application security team. Includes the RACI template and the joint-runbook format.

Module 12. Presenting the network posture to the CISO and the board

Converts the engineer's operational evidence into the slide format the CISO needs for the board risk committee. Covers the four metrics the board actually cares about (segmentation effectiveness, rule-base hygiene index, IPS tuning maturity, mean-time-to-rule-decommission), the trend-line format, and the one-page narrative that frames a quarter of network security work for non-technical directors. Includes the board-pack template and the talking-points document for the CISO.

How this addresses your situation

Specific modules that map to what you said you are dealing with.

The Friday afternoon firewall change ticket from a new payment partner that needs a permit into the card-acquiring zone, and the segmentation justification that was never written down.

The quarterly internal audit that asks for the firewall rule-base review evidence and finds 200 rules without a recent business-owner attestation.

The PCI-DSS QSA visit that wants the segmentation diagram and the compensating-control narrative for the shared infrastructure between cardholder zone and the rest of the bank.

The CBN examiner's request for the IPS tuning rationale that explains why three signature classes were set to alert-only and why two were set to block.

What you get with this course

Twelve written modules in the Art of Service learning environment, each anchored to the engineer's working week.
Downloadable templates for every module: rule-base review evidence pack, segmentation diagram and flow matrix, IPS tuning log, lateral movement test plan, change-control packet, rule-decommission working paper, interconnect inventory, board-pack one-pager.
Worked examples drawn from Nigerian commercial bank network architectures, anonymised.
Hand-built implementation playbook tailored to your current rule register and your segmentation diagram, delivered alongside course access.

What you will have in hand by Day 1, Week 1, Month 1

Within 24 hours your account in the learning environment is provisioned and the tailored implementation playbook is delivered alongside it.

Modules 1 to 4 in the first two weeks establish the regulatory mapping, the rule-base review cadence, the segmentation evidence, and the IPS posture document.

Modules 5 to 8 in weeks three to five stand up the lateral movement test, rework the change-control packet, run the rule decommission, and configure logging for forensic use.

Modules 9 to 12 in weeks six to eight close out the interconnect controls, the channel-specific perimeters, the cross-team operating model, and the board-pack format.

Before and after

Before

The rule base grows every week, the segmentation diagram lives in someone's head, the IPS alerts mostly get acknowledged-and-closed, and audit findings recur because the evidence pack is reconstructed from memory each quarter.

After

Each rule change carries its own justification, the segmentation diagram is the single source of truth for both PCI-DSS and CBN evidence, the IPS posture is defendable with a written tuning log, and the quarterly rule-base review is an artefact pack the auditor accepts without follow-up.

What happens if you do not address this

Network teams that defer this work do not lose the firewall. They lose hours of audit-cycle rework, repeat findings that become repeat-repeat findings, and the credibility hit when the CBN examiner concludes that the network posture is operationally sound but undocumented. Undocumented controls are unenforceable controls in the examiner's view.

Who it is for

Network Security Engineer at a Nigerian commercial bank or fintech holding the firewall, IPS, and segmentation architecture across the cardholder zone, agent banking subnets, payment partner interconnects, and the core banking interfaces. Owns the rule base. Owns the IPS policy. Owns the segmentation diagram that the CBN examiner asks for. Reports into a Head of Information Security or CISO who needs operational evidence, not slide decks.

Who this is NOT for. Not for CISOs who want a strategy deck. Not for SOC analysts whose work begins after an alert. Not for risk officers without hands on the firewall. This is built for the engineer who actually approves the rule changes and tunes the IPS signatures.

How it arrives

Text-based course in the Art of Service learning environment, plus downloadable templates and worked examples for every module, plus the hand-built implementation playbook delivered alongside course access.

Time investment. Around three to four hours of reading per module, plus the template work, which fits inside the engineer's normal change-window and review cycle without requiring extra time off the desk.

Why $199 is the right number

Vendor-led training from the firewall or IPS manufacturer teaches the product. CBN cybersecurity framework workshops teach the clauses. PCI-DSS training teaches the standard. None of those produce the engineer's evidence pack. This playbook is the evidence-pack and operating-model layer that sits on top of all three, written for the engineer who actually runs the perimeter.

FAQ

Is this aligned to a specific firewall vendor?

The templates work across Palo Alto, Fortinet, and Check Point, which cover the bulk of the Nigerian commercial bank network estate. Vendor-specific query and report syntax is included where it matters; the operating model and evidence pack format is vendor-independent.

Does it cover the CBN cybersecurity framework or PCI-DSS?

Both, from the network team's perspective. The CBN framework clauses that land on the network team and the PCI-DSS segmentation requirements are addressed in modules one through three, with a shared evidence pack that satisfies both.

I am the only network security engineer at my bank. Does this still work?

Yes. The templates are designed for a one-person network security function. The operating model in module eleven covers the handoffs to SOC, identity, and application security as if those are separate teams, which fits most commercial banks.

How does the implementation playbook get tailored?

After purchase you receive a short intake covering your current rule register size, your segmentation diagram state, your IPS platform, and your current audit-finding theme. The hand-built playbook is delivered alongside your course access within the timeline above.

30-day money-back guarantee. If after a week of working through the materials this is not what you needed, reply to the receipt email and a full refund is processed. No questions, no forms.

Within 24 hours your account in the learning environment is provisioned and the tailored implementation playbook is delivered alongside it.