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Raymond Ops
Raymond Ops
Aug 31, 2025 · Fundamentals

Mastering NAT: From Basics to Advanced Configurations

This article explains the fundamentals of Network Address Translation (NAT), including IPv4 address exhaustion, private IP ranges, NAT principles, roles, classifications such as static NAT, dynamic NAT, NAPT, Easy IP, NAT Server, and provides detailed configuration examples and a typical network experiment to illustrate practical deployment.

NATNetwork Address TranslationRouter configuration
0 likes · 15 min read
Mastering NAT: From Basics to Advanced Configurations
MaGe Linux Operations
MaGe Linux Operations
Dec 2, 2023 · Fundamentals

Step-by-Step Router and VPC Configuration with Ping Test

This guide walks through configuring three routers (R1, R2, R3) and two virtual PCs in a simulated network, displaying interface IPs, routing tables, and verifying connectivity with a ping test, all illustrated with command outputs and topology images.

Router configurationpacket tracerping test
0 likes · 12 min read
Step-by-Step Router and VPC Configuration with Ping Test
Open Source Linux
Open Source Linux
Nov 3, 2022 · Fundamentals

How to Set Up Port Forwarding for Remote Access: A Step-by-Step Guide

This guide explains what port forwarding (port mapping) is, why it’s useful for remote access, and provides detailed instructions on configuring it on a router, using public IP or dynamic DNS, plus common troubleshooting tips to ensure external users can reach internal services.

NATRemote accessRouter configuration
0 likes · 7 min read
How to Set Up Port Forwarding for Remote Access: A Step-by-Step Guide
DevOps Cloud Academy
DevOps Cloud Academy
Aug 9, 2019 · Operations

Static Routing Configuration and Verification on Cisco Routers

This guide explains the concepts of routing tables, static and default routes, and provides step‑by‑step Cisco router configuration commands and verification procedures to achieve full network connectivity between two routers and their attached PCs.

CiscoIP routingRouter configuration
0 likes · 4 min read
Static Routing Configuration and Verification on Cisco Routers
Practical DevOps Architecture
Practical DevOps Architecture
Jun 15, 2015 · Information Security

Configuring NAT, ACL, and Static Routing on a Router

This guide demonstrates how to configure NAT with an ACL, set up internal and external interface IP addresses, define a default static route, and create an ACL‑based traffic policy to block specific internal hosts from accessing a given external IP address.

ACLNATRouter configuration
0 likes · 3 min read
Configuring NAT, ACL, and Static Routing on a Router
Practical DevOps Architecture
Practical DevOps Architecture
May 28, 2015 · Operations

10 Cisco IOS Service Subcommands and Their Usage

This article lists and explains ten Cisco IOS service subcommands—including service dhcp, service linenumber, service password-encryption, service nagle, and others—detailing their functions, typical usage scenarios, and security considerations for configuring routers and switches.

CiscoRouter configurationiOS
0 likes · 6 min read
10 Cisco IOS Service Subcommands and Their Usage