Implementing Port Forwarding


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Table of contents

Implementing Port Forwarding

Outline

Port Forwarding

What is Port Forwarding?

Port Forwarding Requirements

Ipchains Review

What is Ipchains?

Ipchains syntax review

What is IP Masquerading?

Ipmasqadm

Conventions Used in this Example

Network Diagram

Conventions (cont.)

Implementing Port Forwarding

Enabling Forwarding & Masquerading

Create Input Rules in ipchains

Sample ipchains.rules file

Restore ipchains rules

Enabling Port Forwarding

Add Port Forwarding Rules

Restart ipchains

Check ipchains rules

Check Port Forwarding Rules

Troubleshooting

Resources

Author: Amy Tanner

E-mail: amy@real-time.com

Homepage: http://www.real-time.com

Further information:
Presented to TCLUG September 11, 1999

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