WatchGuard Technologies SOHO How does information travel on the internet?, IP Addresses, Protocol

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How does information travel on the internet?

How does information travel on the internet?

Each packet of information transported over the Internet must be packaged in a special way to ensure that it is able to travel from one computer to the next. A system called Internet Protocol (IP) takes chunks of information and wraps them up with a header identifying both where the information is going and how it should be handled enroute.

IP Addresses

An IP address defines the specific computer on the Internet that should send or receive a packet. Every computer on the Internet has a unique address, including your SOHO device. When defining a service behind your firewall, you need to include the trusted network address for the machine hosting the application.

On the Internet, IP addresses can be identified using either a string of numbers or a user-friendly domain name. For example, the IP address of the WatchGuard site is 209.191.160.60 while the domain name is www.watchguard.com.

Protocol

A protocol defines how a packet is bundled up and packaged for shipment across a network. The most commonly used protocols are Transmission Control Protocol (TCP) and User Datagram Protocol (UDP). In addition, there are a variety of IP protocols which are used less frequently.

Port number

The port number alerts the computers at both the sending and receiving end how to handle the packet.

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Contents WatchGuard Soho User Guide Page Using this guide Following conventions are used throughout this guideCertifications and Notices FCC CertificationCE Notice Industry CanadaTaiwanese Notice Vcci Notice Class a ITE Declaration of Conformity WatchGuard End-User License Agreement Page User Guide WatchGuard Limited Hardware Warranty User Guide Copyright and Patent Information Table of Contents Your Administrative Options Configuring Virtual Private Networking Page Introduction WelcomeRegistration and Identification Information How does a firewall work?How does a firewall work? How does information travel on the internet? IP AddressesProtocol Port numberNetwork Address Translation NAT ServicesHow does the Soho process this information? Default Factory Settings Soho Home Page-System StatusResetting a Soho to the Factory Defaults Firewall SettingsRebooting a WatchGuard Soho Base Model SohoRebooting a WatchGuard Soho Rebooting a WatchGuard Soho Pre-installation checklist Before you beginInstallation Process Determine your current TCP/IP settings Microsoft Windows NT orMicrosoft Windows 95 or 98 or ME MacintoshDisable your browser’s Http proxy Exit the TCP/IP configuration screenNetscape Netscape 6/6.1Cabling the Soho for one to four devices Physically connecting your SohoInternet Explorer 5.0/5.5 Installation Process Cabling the Soho for more than four computers This creates a connection between the Soho and the modem Installation Process Configuring Your External Network Network addressingDouble-click the Network icon TCP/IP Properties dialog box appears Configuring the Soho External network for dynamic addressing Configuring the Soho External network for static addressing On your computerOn the Soho ExternalConfiguring the Soho external network for PPPoE From the Configuration Mode drop list, select PPPoE Client Click Automatically restore lost connections Release and renew the IP configuration Routes Configuring Your Trusted NetworkConfigure the Trusted network with static addresses Configure additional computers to the trusted network Configuring Static Routes View the Network Statistics Network Statistics View the Network Statistics Your Administrative Options System SecuritySetting a System Administrator Name and System Passphrase = System Security Setting up VPN Manager Access = VPN Manager AccessClick the Submit button = Update Update Your Configuration from a Non- Windows PlatformRedeeming your Soho upgrade certificates = Upgrade Upgrade certificates Seat LicensesView the Configuration File = View Configuration FileView the Configuration File Firewall settings Configuring Incoming and Outgoing ServicesPre-configured Services Incoming or OutgoingCreating a Custom Service IP Protocols Custom ServiceTCP and UDP Ports Blocking External Sites Blocked Sites Firewall Options Firewall OptionsPing requests received on the External Network Denying FTP access to the Trusted Network interface Socks implementation for the SohoConfigure your Socks application Logging all allowed outbound traffic Disabling Socks on the SohoCreating a virtual DMZ DMZCreating a virtual DMZ Creating a virtual DMZ What is Logging? Viewing Soho log messagesSetting a WatchGuard Security Event Processor log host Wsep LoggingOur example Setting a Syslog Host Syslog LoggingSetting the System Time System TimeIf you have decided to use the WatchGuard Time Server Setting the System Time Setting the System Time WatchGuard Soho WebBlocker How WebBlocker worksWeb site not in WebBlocker database Web site in WebBlocker databaseWatchGuard WebBlocker database unavailable WebBlocker Users and GroupsPurchasing and enabling Soho WebBlocker Bypassing the Soho WebBlockerSettings Configuring the Soho WebBlockerEnable WebBlocker Enter the Inactivity Timeout in minutes Create WebBlocker Groups and Users GroupsTo the right of the Users field, click the New button Click the Submit button WebBlocker categories Alcohol/TobaccoDrug Culture Search Engines Searching for blocked sites Click Check if the URL is on the CyberNOT ListConfiguring Virtual Private Networking Why create a virtual private network?What you will need IP Address Table example Step-by-step instructions for configuring a Soho VPN tunnel Obtaining the VPN upgradeEnabling the VPN upgrade Special considerationsHow do I get a static external IP address? Frequently asked questionsWhy do I need a static external address? OK, why is ping not working? How do I obtain a VPN upgrade certificate?How do I connect three or four offices together? How do I troubleshoot the connection?View the VPN Statistics How do I enable a VPN Tunnel?Muvpn Clients View the VPN Statistics 104 General TroubleshootingHow do I reboot my SOHO? What do the on and Mode lights signify on the SOHO? How do I register my SOHO?Set a password on my unit, but I forgot it. Can you help? What is a Soho feature key?Cant get a certain Soho feature to work with a DSL modem How does the seat limitation on the Soho work?How do I install a Soho using a Macintosh? Configuration Where are the Soho settings stored?How can I see the MAC address of my SOHO? How do I change to a Dhcp trusted IP address?How do I set up and disable Webblocker? How do I change to a static trusted IP address?WebBlocker IncomingVPN Management How do I set up my Soho for VPN Manager Access? How do I set up VPN between two SOHOs?Special Notices Online Documenting and In-Depth FAQsContacting Technical support Database WebBlocker Default gateway 98 DNS service 116 User Guide 117 Socks