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Contents
CEQURUX Firewall
and VPN Gateway
Administrator's Guide
Release 4.1.14
Copyright © 2004,
CEQURUX Technologies
Contents
List of Figures
Software Licence Agreement
Licence
Licence Termination
Restrictions on Use
Disclaimer of Warranty
Limitation of Liability
Licence Scope
Introduction
Welcome
An Overview of TCP/IP Internetworking
IP Addresses
The IP Protocol
Transport Layer Protocols
Clients and Servers
TCP/IP and Security
Defending Against Attack
The Future of IP
Architecture
Using Proxies
Transparent Gatewaying
Packet Flow and Network Address Translation
Authentication and Access Control
NetBIOS Authentication
ident
Authentication
HTTP Password Authentication
S/Key One-Time Password Authentication
Digital Signature Authentication
X.509 Authentication
Access Control Attributes
Accounting and Logging
Virtual Private Networks
Cryptographic Subsystem
Protocols and Algorithms
Private and Public Key Format
Cryptographic Standards
Supported Services
Hardware and Software Components
Installation
Overview
Preparation
Bootstrapping
Installation
Registration
Booting the System
Logging On and Off
Configuration
Using the Administration Agent
The Screen Hierarchy
First-Time Setup
System Setup
Hardware Configuration
Configuring Core Services
Domain Name System Setup
Smart Blocking
Setting Up Internal Static Routes
Setting Up Mail
Preventing Spam Mail
Configuring Access to Services
Blocking Access
Configuring HTTP Caching
Enabling User Access to Services
Gateway Logging Configuration
Restricting Gateways with Packet Filters
Special Considerations for NetBIOS
Protocol Maps
Filtering Content from HTML Pages
Filtering HTML Banner Ads
Connection Limits
Blocking Access to News Groups
Blocking Access to Particular Servers
Blocking URLs
Named User Groups, Address Groups and Time Classes
Access Time Specifications
Address Groups
User Groups
Setting S/Key and HTTP Passwords
Configuring Public Services
Running a WWW Server
Running a WAIS Server
Anonymous FTP
Running a Gopher Server
Setting Up Virtual Mail and WWW Domains
System Log Configuration
System Log Filtering
Setting Up a Printer
Idle Timeouts
Virtual Private Networks
IPSec Virtual Private Networks
CEQURUX Proprietary Virtual Private Networks
Using Modems
Using PPP or SLIP
Setting Up a Firewall for Remote Administration
Using SSH Instead of Telnet
Administration
System Log Functions
Other
fwadmin
Features
Boot Messages
Interface Statistics
Protocol Statistics
Viewing the Currently Running Processes
Viewing the Current Network Connections
Importing and Exporting Files to Diskette
Importing User Keys from Diskette
Hooks to External Programs
The
elm
E-Mail Client
The Midnight Commander Visual Shell
Daily Reports
E-Mail Virus Protection
Administration Features Accessible Via WWW Browsers
Adding Browsable RFCs to the Firewall
Supporting Tools
The MS-Windows Remote Administration Programs
The User Authentication Agents
The MS-Windows User Authentication Agent
The UNIX User Authentication Agent
Advanced Topics
Accessing Servers on Non-Standard Ports
Adding Additional External Routes
Troubleshooting
Running
authd
in Debug Mode
The
gwchat
Utility
Debugging with the Proxies
Diagnosing Mail Problems
Other Troubleshooting Tips
Customisation
Customising the Servers and TCP Application Proxies
Customising the System Startup Process
Customising the Daily, Weekly and Monthly Activities
Customising Scheduled Activities
Customising Remote Administration
Customising the Packet Filters
Customising DNS
Customising Telnet and FTP Welcome Messages
Customising Mail
Customising SSH Logins
Other Customisation Files
The Kernel Configuration Editor
Keeping Informed
Copyrights
Copyright © 2004, CEQURUX Technologies
