Overview

• In this lab we configured a firewall and windows client to allow for the windows client to access the internet from its own LAN.

Setting up the VMs

• Ensure Network Adapter 1 = WAN, Network Adapter 2 = LAN

Configuring the Firewall

Root

After booting up and logging into the firewall, this is the menu given:

• Enter 1 to assign interfaces

• • Make sure WAN is em0 and LAN is em1 (check MAC addresses to make sure they match up)

• Then Enter 2 to assign IP addresses to the interfaces

• • Note: Make sure to use the assigned one
• • Do not enable any DHCP options or revert to http when going through this process

GUI

• Go to the default gateway to access console
• Do not mess with a lot of the options, only these:
• • Hostname, domain name, primary DNS, RFC1918 networks (off), password
• Note: Give it a few minutes to update, it does not happen immediately

Configuring the Windows Machine

System Renaming & Account Creation

System Renaming

• Go to File Explorer
• Right click this PC, Properties
• Change settings, change

Account Creation

• search bar 'lusrmgr.msc'
• click users, right click to create new user
• right click on the made user and select properties
• go to members of and add hostname\Adminstrators

Configuring IP addresses

• Control Panel, Network and Internet
• Networking and Sharing Center, Ethernet0 or whatever adapter is next to connections
• Properties, TCP/IPv4, Properties
• Enter relevant information

Notes

Commands

• whoami - returns the logged in account's name
• hostname - returns the name of the host machine
• ping [destination] - sends a series of packets to an address
• • -c / -n [#]: sets how many packets are sent
• Tracert [destination] - traces the route taken to an address
• • -h [#] : sets the maximum number of hops (default is 30)

Tech Terms

Default Gateway

• A forwarding host when the destination is unknown or no specific route is given
• Helps packets flow more efficiently

Routing & Hops

• Hops are how many routers / routing tables the packet has gone through
• Routing can be configured to look for least amount of hops or account for traffic

Pfsense

• Firewall or Router software
• Open Source Community Edition or Closed Source Plus Edition
• named after packet filtering tool PF

Sources

• Tracert Command Guide
• Default Gateway
• Hops
• Pfsense