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port

Networking

A number from 0 to 65535 that identifies one specific service on a machine. The IP address picks the machine; the port picks which program on it should get the data.

Related terms

well-known ports

Appears in(77)

The OSI ModelNetworking Foundations
IP Addressing and SubnettingNetworking Foundations
TCP, UDP, and PortsNetworking Foundations
How Routers Move PacketsNetworking Deep Dive
Processes and ServicesLinux for Security
Switching and VLANsNetworking Deep Dive
Text Processing: grep, awk, sedLinux for Security
NAT and Private NetworksNetworking Deep Dive
Networking from the CLILinux for Security
IPv6 and the Modern InternetNetworking Deep Dive
Write a Recon Bash ScriptLinux for Security
Recon Methodology and Attack SurfaceRecon and Scanning
Prompt EngineeringBuilding with AI
Host DiscoveryRecon and Scanning
Building a REST APIBackends and APIs
Port Scanning Deep DiveRecon and Scanning
Service and Version DetectionRecon and Scanning
Subdomain and Content EnumerationRecon and Scanning
tcpdump FundamentalsTraffic Analysis
Components and SchematicsElectronics Foundations
BPF FiltersTraffic Analysis
Dissecting Traffic in WiresharkTraffic Analysis
Microcontrollers and ArduinoElectronics Foundations
HTTP vs HTTPS vs VPNTraffic Analysis
Inputs, Outputs, and SensorsElectronics Foundations
HTTP FundamentalsWeb and HTTP
How Web Apps WorkWeb and HTTP
Intercepting ProxiesWeb and HTTP
Securing Your Devices and MessagesDigital Self-Defense
Approaching a TargetCTF Methodology
From Enumeration to FootholdCTF Methodology
From Foothold to RootCTF Methodology
PKI and CertificatesCryptography
PowerShell for SecurityWindows Fundamentals
Windows Event LogsWindows Fundamentals
Windows Networking and SMBWindows Fundamentals
Python Crash Course for HackersPython for Security
Talking HTTP with PythonPython for Security
Sockets and NetworkingPython for Security
Build a Port ScannerPython for Security
Automating ReconPython for Security
What Containers Actually AreDocker and Containers
Images and DockerfilesDocker and Containers
Docker ComposeDocker and Containers
Running Vulnerable Apps in DockerDocker and Containers
Container Security BasicsDocker and Containers
Server-Side Request ForgeryWeb Application Attacks
Setting Up Burp and the ProxyBurp Suite
Metasploit FundamentalsThe Metasploit Framework
Finding and Running ExploitsThe Metasploit Framework
Mapping Infrastructure and DomainsOpen Source Intelligence
Firewalls and RulesetsNetwork Defense
IDS and IPSNetwork Defense
Network SegmentationNetwork Defense
Detecting Lateral MovementNetwork Defense
Cloud Models and Shared ResponsibilityCloud Security Fundamentals
Common Cloud MisconfigurationsCloud Security Fundamentals
Kubernetes ArchitectureKubernetes Security
Common Cluster MisconfigurationsKubernetes Security
Attacking a ClusterKubernetes Security
What GRC Actually IsGovernance, Risk, and Compliance
The IoT Attack SurfaceIoT and OT Security
Common IoT WeaknessesIoT and OT Security
ICS and OT PrimerIoT and OT Security
Defending Connected DevicesIoT and OT Security
Why You Need a LabBuilding a Home Lab
Networking Your LabBuilding a Home Lab
Stocking It With TargetsBuilding a Home Lab
The Map of Security RolesBreaking Into Security
The Technical InterviewBreaking Into Security
Building a Vuln Management ProgramVulnerability Management
Scanning and Authenticated ScansVulnerability Management
MFA Done RightIdentity and Access Management
MicrosegmentationZero Trust Architecture
DNS AttacksDNS and Network Services Security
Securing DNSDNS and Network Services Security
DHCP and NTP RisksDNS and Network Services Security