Network

Security

Network

Security

Architecture

Design

Zero

Trust

Architecture

Micro

segmentation

identity

aware

proxies

continuous

verification

every

session

Defense

Depth

Layered

overlapping

controls

across

network

host

application

and

data

tiers

Network

Segmentation

VLAN

Design

Trust

zones

inter

zone

policy

traffic

isolation

and

PCI

scope

reduction

DMZ

Screened

Subnet

Design

Public

facing

service

placement

bastion

hosts

and

jump

box

architecture

Secure

Topology

Design

Hub

and

spoke

spine

leaf

and

WAN

fabric

patterns

with

resilient

failover

Network

Access

Control

802.1

RADIUS

and

TACACS

integration

with

endpoint

posture

assessment

Perimeter

Defense

Firewall

Engineering

Generation

Firewalls

Palo

Alto

PAN

Fortinet

FortiOS

and

Cisco

Secure

Firewall

policy

design

Stateful

Inspection

Rule

Optimization

Rule

hygiene

shadowing

analysis

object

cleanup

and

hit

count

review

Firewall

Policy

Lifecycle

Management

Tufin

and

AlgoSec

change

workflows

recertification

and

audit

trails

Web

Application

Firewalls

ModSecurity

AWS

WAF

and

Cloudflare

rulesets

with

false

positive

tuning

Secure

Web

Gateway

Proxy

Zscaler

Netskope

and

forward

reverse

proxy

hardening

and

SSL

inspection

Egress

Filtering

DNS

Sinkholing

Outbound

allowlisting

domain

reputation

blocking

and

callback

suppression

1 / 7

Network

Monitoring

IDS

IPS

Traffic

Analysis

IDS

IPS

Engineering

Snort

Suricata

and

Zeek

rule

authoring

tuning

and

false

positive

reduction

Network

Traffic

Analysis

NDR

platforms

traffic

baselining

and

behavioural

anomaly

detection

Full

Packet

Capture

PCAP

Forensics

Wireshark

and

tcpdump

analysis

stream

reassembly

PCAP

triage

scale

Flow

Analytics

NetFlow

IPFIX

and

sFlow

collection

retention

design

and

reporting

Encrypted

Traffic

Analytics

TLS

interception

architecture

fingerprinting

and

certificate

metadata

Protocol

Deep

Inspection

TCP

DNS

ARP

HTTP

/2,

QUIC

and

BGP

behaviour

under

adversarial

load

Deception

Honeypots

Canary

tokens

honeynets

and

lateral

movement

lures

for

early

detection

Cryptography

Public

Key

Infrastructure

TLS

1.2 /

TLS

1.3

Hardening

Cipher

suite

selection

HSTS

forward

secrecy

OCSP

stapling

and

monitoring

PKI

Design

Operations

Microsoft

and

EJBCA

two

tier

hierarchies

CRL

and

OCSP

services

Certificate

Lifecycle

Management

Issuance

renewal

automation

expiry

monitoring

and

rogue

certificate

discovery

IPsec

IKEv

Cryptography

Phase

and

proposals

Diffie

Hellman

group

selection

and

perfect

forward

secrecy

Key

Management

HSM

AWS

KMS

Thales

Luna

and

HashiCorp

Vault

Transit

with

rotation

workflows

Hashing

Digital

Signatures

SHA

-2/

SHA

-3,

HMAC

code

signing

and

non

repudiation

controls

Post

Quantum

Readiness

KEM

and

DSA

migration

planning

cryptographic

inventory

and

agility

2 / 7

Network Security Technical Skills — page 3

Secure

Remote

Access

VPN

Site

IPsec

VPN

Policy

based

and

route

based

tunnels

high

availability

and

failover

testing

Remote

Access

VPN

GlobalProtect

Cisco

AnyConnect

OpenVPN

and

WireGuard

deployment

and

support

Zero

Trust

Network

Access

Cloudflare

Access

Zscaler

Private

Access

and

per

application

brokering

Software

Defined

Perimeter

Single

packet

authorization

dark

cloud

deployment

and

identity

gated

access

WAN

Security

Integration

Overlay

encryption

local

internet

breakout

policy

and

branch

micro

perimeters

Tunnel

Policy

Split

Tunnelling

Least

privilege

routing

DNS

enforcement

and

proxy

policy

for

remote

endpoints

Identity

Access

Privileged

Management

AAA

Protocols

RADIUS

TACACS

and

Diameter

with

centralised

device

administration

policy

Directory

and

LDAP

hardening

tiered

admin

model

Kerberos

attack

mitigation

Federation

Standards

SAML

2.0,

OAuth

2.0,

OpenID

Connect

and

SCIM

automated

provisioning

Single

Sign

Conditional

Access

Entra

Okta

and

Ping

Identity

with

device

and

location

based

policy

Privileged

Access

Management

CyberArk

Delinea

and

BeyondTrust

vaulting

session

recording

and

brokering

Access

Control

Models

RBAC

ABAC

least

privilege

enforcement

and

periodic

access

recertification

Passwordless

Authentication

FIDO

and

WebAuthn

passkeys

phishing

resistant

MFA

and

enrolment

policy

3 / 7

Network Security Technical Skills — page 4

Cloud

Container

Virtualization

Security

Cloud

IAM

Policy

Design

AWS

IAM

Microsoft

Entra

roles

and

GCP

IAM

least

privilege

permission

modelling

Cloud

Network

Controls

Security

groups

NACLs

private

endpoints

Transit

Gateway

and

VPC

peering

policy

Cloud

Native

Detection

GuardDuty

Defender

for

Cloud

and

Security

Command

Center

finding

triage

Cloud

Security

Posture

Management

CSPM

baselines

configuration

drift

detection

and

misconfiguration

remediation

Infrastructure

Code

Security

Terraform

and

CloudFormation

scanning

with

Checkov

tfsec

and

policy

code

Kubernetes

Container

Security

Network

policies

admission

control

Falco

runtime

detection

CIS

benchmark

Cloud

Workload

Protection

CWPP

agents

image

scanning

and

software

supply

chain

provenance

attestation

Hypervisor

Hardening

vSphere

and

ESXi

baselines

isolation

virtual

switch

security

policy

Endpoint

Host

Hardening

Baselines

CIS

Benchmarks

and

DISA

STIGs

applied

Linux

and

Windows

Server

fleets

Endpoint

Detection

Response

CrowdStrike

SentinelOne

and

Defender

for

Endpoint

deployment

and

tuning

Host

Based

Firewalls

HIDS

nftables

iptables

Wazuh

and

OSSEC

file

integrity

and

log

monitoring

Application

Control

Allowlisting

sandboxing

and

PowerShell

script

block

logging

enforcement

Patch

Configuration

Management

WSUS

Intune

Ansible

and

Chef

InSpec

compliance

scanning

and

remediation

Mobile

BYOD

Security

MDM

UEM

enrolment

work

profile

containerisation

and

device

compliance

gates

4 / 7

Network Security Technical Skills — page 5

Vulnerability

Management

Offensive

Security

Vulnerability

Scanning

Nessus

Qualys

VMDR

and

Rapid

InsightVM

deployed

across

enterprise

estates

Authenticated

Assessment

Credentialed

scanning

agent

based

coverage

and

false

positive

triage

Risk

Based

Prioritisation

CVSS

scoring

EPSS

modelling

CISA

KEV

catalogue

and

exploitability

context

Penetration

Testing

PTES

and

OWASP

WSTG

methodology

scoping

exploitation

and

technical

reporting

Infrastructure

Exploitation

Internal

pivoting

privilege

escalation

and

Active

Directory

attack

path

analysis

Red

Teaming

Adversary

Emulation

MITRE

ATT

technique

mapping

Caldera

and

Atomic

Red

Team

execution

Attack

Surface

Management

External

asset

discovery

attribution

and

internet

facing

exposure

scoring

Threat

Detection

SIEM

SOC

Operations

SIEM

Engineering

Splunk

Microsoft

Sentinel

Elastic

Security

and

IBM

QRadar

deployment

and

tuning

Log

Source

Onboarding

Syslog

CEF

and

LEEF

parsing

with

normalisation

common

data

model

Detection

Engineering

Sigma

rules

correlation

searches

and

detection

code

review

pipelines

Threat

Intelligence

Integration

MISP

STIX

TAXII

and

OpenCTI

feeds

contributing

IOC

enrichment

alerts

ATT

Coverage

Mapping

Technique

level

gap

analysis

validated

through

purple

team

exercises

SOAR

Playbook

Automation

Cortex

XSOAR

Tines

and

Shuffle

playbooks

with

automated

case

management

Alert

Triage

Severity

Modelling

Enrichment

deduplication

escalation

thresholds

and

analyst

workload

balancing

SOC

Operations

Tiered

escalation

runbook

execution

MTTD

MTTR

reporting

and

shift

handover

5 / 7

Network Security Technical Skills — page 6

Incident

Response

Digital

Forensics

Lifecycle

Management

NIST

800-61

preparation

detection

containment

eradication

and

recovery

Network

Forensics

Flow

and

packet

timeline

reconstruction

lateral

movement

tracing

and

scope

definition

Memory

Forensics

Volatility

and

Rekall

analysis

for

injected

code

handles

and

credential

artefacts

Disk

Artifact

Forensics

Autopsy

FTK

and

EnCase

use

across

Windows

and

Linux

artefact

sets

Malware

Triage

Static

and

dynamic

analysis

sandbox

detonation

and

IOC

extraction

Containment

Eradication

Host

isolation

credential

rotation

rebuild

verification

and

threat

scoping

Evidence

Handling

Chain

custody

forensic

imaging

and

legal

hold

coordination

Governance

Risk

Compliance

NIST

Cybersecurity

Framework

CSF

2.0

profile

development

current

state

assessment

and

maturity

roadmapping

ISO

IEC

27001 & 27002

Annex

control

implementation

statement

applicability

and

audit

evidence

PCI

DSS

4.0

CDE

scoping

network

segmentation

validation

and

requirements

1, 4

and

controls

CIS

Controls

Implementation

group

mapping

safeguard

tracking

and

metric

reporting

SOC

Type

Control

design

evidence

collection

cadence

and

auditor

liaison

Risk

Assessment

Threat

Modelling

STRIDE

PASTA

and

DREAD

methods

with

quantitative

risk

scoring

Policy

Exception

Management

Standards

authoring

risk

waivers

review

cycles

and

control

ownership

registers

Regulatory

Obligations

GDPR

HIPAA

and

data

residency

requirements

translated

into

network

controls

6 / 7

Security

Automation

Scripting

DevSecOps

Python

for

Security

Tooling

API

clients

log

parsers

and

automation

frameworks

for

repetitive

tasks

Shell

PowerShell

Scripting

Bash

and

PowerShell

for

hardening

remediation

and

bulk

configuration

change

API

Integration

REST

and

GraphQL

consumption

for

SOAR

CMDB

and

asset

inventory

tooling

Configuration

Code

Ansible

playbooks

Terraform

modules

and

golden

image

build

pipelines

Pipeline

Security

SAST

DAST

and

software

composition

analysis

gates

with

artefact

signing

Secrets

Management

HashiCorp

Vault

and

AWS

Secrets

Manager

with

automated

rotation

workflows

Version

Control

Change

Review

Git

workflows

peer

review

discipline

and

controlled

change

management

7 / 7

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