Cloudflare Network Security study materials
Cloudflare Network Security study resources

Cloudflare Network Security key terms

Cloudflare Network Security · Get comfortable with the vocabulary.

DDoS Attack

A cyberattack where multiple compromised systems flood a target with traffic, exhausting its resources and making it unavailable to legitimate users.

Related: DDoS Mitigation, Volumetric Attack, SYN Flood
DDoS Mitigation

Techniques and systems that detect and filter malicious traffic to protect a network or service from distributed denial-of-service attacks, ensuring availability.

Related: DDoS Attack, Rate Limiting, Anycast
WAF (Web Application Firewall)

A security solution that monitors, filters, and blocks HTTP/HTTPS traffic to protect web applications from attacks like SQL injection and cross-site scripting.

Related: OWASP Top 10, Managed Ruleset, SQL Injection
OWASP Top 10

A widely used awareness document listing the most critical security risks to web applications, such as injection and broken authentication.

Related: WAF (Web Application Firewall), SQL Injection, Cross-Site Scripting (XSS)
SQL Injection

An attack where malicious SQL code is inserted into input fields to manipulate a database, potentially exposing or deleting sensitive data.

Related: WAF (Web Application Firewall), OWASP Top 10
Cross-Site Scripting (XSS)

A vulnerability where attackers inject client-side scripts into web pages viewed by others, bypassing access controls like the same-origin policy.

Related: WAF (Web Application Firewall), OWASP Top 10
Rate Limiting

A technique that controls the amount of traffic a client can send to a server within a specific time frame, preventing abuse and resource exhaustion.

Related: DDoS Mitigation, Bot Management
Bot Management

The practice of detecting and controlling automated traffic to mitigate malicious bots while allowing legitimate ones, often using behavioral analysis and machine learning.

Related: Rate Limiting, CAPTCHA
CAPTCHA

A challenge-response test used to distinguish human users from automated bots, often requiring solving puzzles or identifying images.

Related: Bot Management
Volumetric Attack

A type of DDoS attack that overwhelms a target's bandwidth by flooding it with a massive volume of traffic, often using amplification techniques.

Related: DDoS Attack, SYN Flood, Amplification Attack
SYN Flood

A DDoS attack that exploits the TCP handshake by sending many SYN requests without completing the connection, exhausting server resources.

Related: Volumetric Attack, DDoS Attack
Amplification Attack

A DDoS technique where an attacker sends small requests to a vulnerable service with a spoofed source IP, causing large responses to flood the victim.

Related: Volumetric Attack, DDoS Attack
Anycast

A network addressing method where multiple servers share the same IP address, routing users to the nearest server, which helps absorb and distribute attack traffic.

Related: DDoS Mitigation, Edge Network
Edge Network

A distributed network of servers located close to end users, providing low-latency services and security filtering at the network perimeter.

Related: Anycast, Reverse Proxy
Reverse Proxy

A server that sits between clients and origin servers, forwarding requests and providing additional security, caching, and load balancing.

Related: Edge Network, WAF (Web Application Firewall)
SSL/TLS

Cryptographic protocols that secure communications over a network by encrypting data and authenticating parties, commonly used for HTTPS.

Related: HTTPS, Certificate Management
HTTPS

An extension of HTTP that uses SSL/TLS to encrypt communication between a client and server, ensuring confidentiality and integrity.

Related: SSL/TLS, Certificate Management
Certificate Management

The process of issuing, renewing, and revoking digital certificates used for SSL/TLS encryption to ensure secure and trusted connections.

Related: SSL/TLS, HTTPS
Zero Trust

A security model that requires strict verification for every user and device attempting to access resources, regardless of their location.

Related: Access Control, Identity and Access Management (IAM)
Access Control

The process of restricting access to resources based on policies, ensuring only authorized users or systems can perform certain actions.

Related: Zero Trust, Identity and Access Management (IAM)
Identity and Access Management (IAM)

A framework for managing digital identities and controlling user access to resources through authentication and authorization policies.

Related: Zero Trust, Access Control, Multi-Factor Authentication (MFA)
Multi-Factor Authentication (MFA)

A security method that requires two or more independent credentials to verify a user's identity, adding an extra layer beyond passwords.

Related: Identity and Access Management (IAM), Zero Trust
Firewall

A network security device that monitors and controls incoming and outgoing traffic based on predetermined security rules.

Related: Access Control, WAF (Web Application Firewall)
Intrusion Detection System (IDS)

A system that monitors network traffic for suspicious activity and alerts administrators, but does not take active blocking measures.

Related: Intrusion Prevention System (IPS), Firewall
Intrusion Prevention System (IPS)

A security system that not only detects but also actively blocks or prevents identified threats in network traffic.

Related: Intrusion Detection System (IDS), Firewall
VPN (Virtual Private Network)

A service that creates a secure, encrypted connection over an untrusted network, protecting data privacy and enabling remote access.

Related: SSL/TLS, Zero Trust
IPsec

A suite of protocols that secures IP communications by authenticating and encrypting each IP packet in a data stream.

Related: VPN (Virtual Private Network), SSL/TLS
Managed Ruleset

A preconfigured set of security rules provided by a vendor, designed to protect against common threats and kept up-to-date by the vendor.

Related: WAF (Web Application Firewall), OWASP Top 10
Custom Rules

User-defined security rules that allow organizations to tailor protection based on their specific traffic patterns and business logic.

Related: Managed Ruleset, WAF (Web Application Firewall)
Security Analytics

The collection and analysis of security data to detect threats, identify patterns, and improve an organization's security posture.

Related: Log Management, SIEM
SIEM (Security Information and Event Management)

A system that aggregates and analyzes log data from various sources to provide real-time monitoring, alerting, and incident response.

Related: Security Analytics, Log Management
Log Management

The process of collecting, storing, and analyzing log data from systems and applications for security auditing and troubleshooting.

Related: SIEM (Security Information and Event Management), Security Analytics
DNS Security

Measures taken to protect the Domain Name System from attacks like cache poisoning, DDoS, and spoofing, ensuring reliable and secure name resolution.

Related: DNSSEC, DDoS Mitigation
DNSSEC

A set of extensions that add cryptographic signatures to DNS records, allowing resolvers to verify the authenticity and integrity of DNS responses.

Related: DNS Security
API Security

The practice of securing application programming interfaces by implementing authentication, authorization, and threat protection to prevent data breaches and abuse.

Related: Rate Limiting, Access Control
API Shield

A security solution that protects APIs by enforcing positive security models, validating requests, and mitigating abuse.

Related: API Security, Rate Limiting
mTLS (Mutual TLS)

A mutual authentication process where both client and server present certificates to verify each other's identity, enhancing API and service security.

Related: SSL/TLS, API Security