Table Of Contents
Introduction......................................................................................................................................91
ADSL Fundamentals....................................................................................................................91
PPPoE/Bridged Mode Fundamentals...........................................................................................91
Authentication, Addresses and DNS Servers .........................................................................92
PPPoE MTU Issues ...............................................................................................................92
Bridged Mode...........................................................................................................................92
Location Of Interfaces And Labeling..................................................................................... .92
LED Designations ...................................................................................................................92
ADSL Configuration .......................................................................................................................93
ADSL Network Interfaces........................................................................................................ ...93
Editing A Logical Interface (PPPoE) ..........................................................................................94
Editing A Logical Interface (Bridged) ........................................................................................95
ADSL Statistics............................................................................................................................96
Current Routes & Interface Table................................................................................................96
Upgrading Software ....................................................................................................................96
Chapter 10 – Configuring PPP and Modem................................................................................. .......97
Introduction......................................................................................................................................97
Modem Fundamentals..................................................................................................................97
PPP Mode Fundamentals.............................................................................................................97
Authentication, Addresses and DNS Servers .........................................................................97
When the Modem Connects.....................................................................................................97
LED Designations....................................................................................................................97
Modem Main Menu ..................................................................................................................... ...98
Modem Configuration .................................................................................................................98
Modem PPP Client Connections.................................................................................... ...........100
Modem PPP Client ....................................................................................................................100
Modem PPP Server....................................................................................................................101
Modem Incoming Call Logs .....................................................................................................102
Modem PPP Logs ................................................................................................................. ....102
Modem PPP Connection Logs ..................................................................................................103
Current Routes & Interface Table..............................................................................................103
Chapter 11 – Configuring The Firewall.............................................................................................105
Introduction....................................................................................................................................105
Firewall Fundamentals ..............................................................................................................105
Stateless vs Stateful Firewalls.................................................................................. .............105
Linux® netfilter, iptables And The Shoreline Firewall ........................................................105
Network Address Translation................................................................................................ 106
Port Forwarding.....................................................................................................................107
Shorewall Quick Setup........................................................................................................ ......107
ShoreWall Terminology And Concepts.....................................................................................108
Zones......................................................................................................................................108
Interfaces................................................................................................................................108
Hosts.......................................................................................................................................109
Policy.................................................................................................................................... .109
Masquerading And SNAT......................................................................................................110
Rules................................................................................................................................ ......111
Configuring The Firewall And VPN..........................................................................................113
Route Based Virtual Private Networking...................................................................... ........113
Policy Based Virtual Private Networking..............................................................................113
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