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Cisco DPC3825 User Manual

Cisco DPC3825
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Cisco Model DPC3825 and EPC3825
8x4 DOCSIS 3.0 Wireless
Residential Gateway User Guide
In This Document
IMPORTANT SAFETY INSTRUCTIONS ............................................................... 2
Introduction ............................................................................................................... 12
What's In the Carton? ............................................................................................... 14
Front Panel Description ........................................................................................... 15
Back Panel Description ............................................................................................ 16
What Are the System Requirements for Internet Service? .................................. 18
How Do I Subscribe to High-Speed Internet Service? ......................................... 19
Where Is the Best Location for My DOCSIS Residential Gateway? .................. 20
How Do I Mount the Modem on a Wall? (Optional) ........................................... 21
How Do I Connect My Gateway for Internet Service? ........................................ 24
How Do I Configure My DOCSIS Residential Gateway? ................................... 26
Configure Wireless Settings .................................................................................... 35
Configure Security .................................................................................................... 51
Control Access to the Gateway ............................................................................... 60
Configure Applications and Gaming ..................................................................... 69
Manage the Gateway ................................................................................................ 75
Monitor Gateway Status .......................................................................................... 84
Frequently Asked Questions ................................................................................... 91
Tips for Improved Performance ............................................................................. 95
Front Panel LED Status Indicator Functions ......................................................... 96
Notices ...................................................................................................................... 100

Table of Contents

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Cisco DPC3825 Specifications

General IconGeneral
Wireless Standard802.11n
Frequency Band2.4 GHz
Ethernet Ports4
USB Ports1
DOCSIS StandardDOCSIS 3.0
Downstream Channels8
Upstream Channels4
Max Download Speed343 Mbps
Telephone Ports2
Weight1.5 lbs

Summary

IMPORTANT SAFETY INSTRUCTIONS

Introduction

Benefits and Features

Lists the outstanding benefits and features of the new Cisco residential gateway.

What's In the Carton?

Front Panel Description

Back Panel Description

What Are the System Requirements for Internet Service?

Minimum System Requirements for a PC

Details minimum hardware and software requirements for PC to use the gateway.

Minimum System Requirements for Macintosh

Details minimum hardware and software requirements for Macintosh to use the gateway.

System Requirements for an Ethernet Connection

Specifies requirements for connecting via Ethernet, including OS and NIC.

How Do I Subscribe to High-Speed Internet Service?

I Do Not Have a High-Speed Internet Access Account

Instructions for setting up a new account with a service provider.

I Already Have an Existing High-Speed Internet Access Account

Information needed if you already have an existing ISP account.

Where Is the Best Location for My DOCSIS Residential Gateway?

How Do I Mount the Modem on a Wall? (Optional)

Before You Begin

Lists items and preparation steps before mounting the gateway on a wall.

How Do I Connect My Gateway for Internet Service?

How Do I Configure My DOCSIS Residential Gateway?

Logging in to the Gateway for the First Time

Steps to access the gateway's configuration interface for the first time.

Configure Wireless Settings

Wireless > Basic Settings

Configure basic wireless network parameters like SSID, mode, and security.

Wireless > Wireless Security

Set up security parameters for your wireless network, including encryption.

Security for Personal Networks – WPA or WPA2 Personal Modes

Configure WPA/WPA2 Personal modes for enhanced wireless network security.

Wireless > MAC Filter

Control network access by allowing or blocking devices based on MAC address.

Access Restriction

Permit or block computers from accessing the wireless network based on rules.

Wireless > Advanced Settings

Configure advanced wireless functions like transmission rate and beacon interval.

Configure Security

Security > Firewall

Configure firewall settings to protect the home network from unauthorized access.

Security > VPN Passthrough

Enable or disable VPN protocols (IPsec, PPTP) to pass through the firewall.

Security > VPN

Configure Virtual Private Network (VPN) tunnels for secure remote connections.

Control Access to the Gateway

Access Restrictions > IP Address Filtering

Configure IP address filters to block or allow access to the Internet.

Access Restrictions > MAC Address Filtering

Configure MAC address filters to permit or block internet access by MAC address.

Access Restrictions > Basic Rules

Configure parental controls and block/allow internet usage by day/time.

Access Restrictions > Time of Day Rules

Set web access filters based on the day of the week and time of day.

Access Restrictions > User Setup

Set up additional user accounts and profiles with customized internet access levels.

Access Restrictions > Local Log

Track user attempts to access restricted internet sites and view parental control logs.

Configure Applications and Gaming

Applications & Gaming > Port Filtering

Configure TCP/UDP port filters to prevent specific ports from accessing or sending traffic.

Applications & Gaming > Port Range Forwarding

Forward specific ports from the internet to internal IP addresses for applications.

Applications & Gaming > Port Range Triggering

Dynamically forward ports to a LAN PC when a specific application event triggers it.

Applications & Gaming > DMZ

Configure a DMZ host for direct internet access for specific devices.

Manage the Gateway

Administration > Management

Manage gateway functions for access and security, including connection modes.

Administration > Reporting

Configure email alerts for system activities and log reporting.

Administration > Diagnostics

Perform diagnostics like ping tests to check the status of your internet connection.

Administration > Backup & Restore

Back up and restore gateway configuration settings to your computer.

Administration > Factory Defaults

Restore all configuration settings to their original factory default values.

Monitor Gateway Status

Status > Gateway

Displays information about the gateway's current settings and status.

Status > Local Network

Displays information about the status of the local area network and connected devices.

Status > Wireless

Shows basic information about the gateway's wireless network status.

Status > DOCSIS WAN

Displays information about the system of your cable modem and its WAN connection.

Frequently Asked Questions

Q. How Do I Configure TCP/IP Protocol?

Guides on configuring TCP/IP protocol for Windows and Macintosh systems.

Q. How Do I Renew the IP Address on My PC?

Steps to renew your PC's IP address if it cannot access the Internet.

Tips for Improved Performance

Front Panel LED Status Indicator Functions

Initial Power Up, Calibration, and Registration (AC Power applied)

Sequence of front panel LED indicators during power up, calibration, and registration.

Normal Operations (AC Power applied)

Front panel LED status indicators during normal operational conditions.

Special Conditions

Front panel LED status indicators during special conditions like network access denial.

Notices

Trademarks

Lists Cisco and third-party trademarks used in the document.

Disclaimer

Cisco Systems' disclaimer regarding errors, omissions, and right to change the guide.

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