Standard Operating Procedure Manual

Only available on StudyMode
  • Download(s) : 642
  • Published : February 12, 2013
Open Document
Text Preview
Field Technician: Standard Operating Procedure Manual

Table of Contents
Part 1 – Network Address Translation
Introduction ……………………………………………………………………………………… 3 Key Terms …………………………………………………………………………………………. 3 NAT Tutorial… …………………………………………………………………………………... 4-5 Part 2 – Packet Filtering
Introduction….…………………………………………………………………………………… 6 Key Terms………………………………………………………………………………………….. 6 Packet Filtering Tutorial…………………………………………………………………….7-12 Part 3 – Router as Default Gateway
Introduction………………………………………………………………………………………. 13 Key Terms………………………………………………………………………………………….. 13 Default Gateway Tutorial…………………………………………………………………… 14-15 References................................................................................................................. 16

Part 1 – Network Address Translation

Introduction
The purpose of this task is to provide the necessary knowledge and experience to proficiently configure a Cisco Linksys WRT600N Router to perform Network Address Translation so that LAN private IPs are properly translated to public IPs for communication to the Internet. If Network Address Translation is disabled the local network devices will not be able to communicate to the outside, i.e. to the internet. The tutorial listed below will help you configure NAT on the router. To simply test if NAT is working, you should be able to navigate to any "outside" website for verification.

Key Terms

1. Network Address Translation (NAT): The Process of converting private IP addresses to Public IP addresses that will allow communication with hosts on the Internet.

NAT Tutorial

1. First log in with the following URL: http://ui.linksys.com/files/WRT600N/1.01.35/SetupDHCP.htm

2. The Basic Setup page should be the default page upon initial log in. 3. Under the Setup Tab, click on Advanced Routing Option.

4. Under the Advanced Routing in the left Task menu, to enable NAT just set the radial button to “Enabled” and click Save Settings for the changes to apply.

Part 2 –Packet Filtering

Introduction
The purpose of this document is to setup and configure packet filtering on the WRT600N Linksys Wireless Router. Packet filtering can aid in security by preventing unwanted Internet requests to the internal network or prevent the network from being "pinged" from an unknown address.

Key Terms
Packet Filtering- A technology that can block or open ports for TCP/UDP and ICMP protocols. Firewall- A device or software that can filter different types of network traffic between internal and external networks. Multicast- Multicast traffic allows hosts and or devices who specifically requested the traffic to receive the traffic instead of the entire network receiving the traffic. MAC address- Media Access Control address is the physical address unique to all devices. No two MAC address are the same.

Packet Filtering Tutorial

1. First log in with the following URL: http://ui.linksys.com/files/WRT600N/1.01.35/SetupDHCP.htm

2. Navigate to the Security Tab, then click on the "Firewall" link.

3. To enable unwanted Internet Requests, place a check mark in the "Filter Anonymous Internet Requests" 4. If you would like to filter requests sent to the router to multiple networks, place a check mark in the "Filter Multicast" radio box. 5. If you wish to filter Internet NAT Redirection, place check mark in the radio box. 6. To prevent outside devices from scanning port 113, place a check mark in the "Filter IDENT (Port 113)" radio box.

7. Next, navigate to the "Access Restrictions" Tab to customize packet filtering even further. 8. To enable Internet Access restrictions to other PC's on the network, locate the Access Policy drop down and choose an access policy(There can be up to 10 Access Policies). Then enter a Policy Name, for this example we will use "Server PC Test". To enable the policy click on the "Enabled" status radio box. (See Diagram 1) Under Applied PC's, click on the "Edit List" box...
tracking img