SnapGear 1.7.8 manual Configure PCs to use SnapGear appliance Internet gateway

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Configure PCs to use SnapGear appliance Internet gateway

The PCs on your network must be configured to use the SnapGear appliance as the default gateway for Internet access. See the section called Configuring the PCs on your network for more information.

Establishing the connection

If you are connecting to your ISP using a modem or ISDN connection, the SnapGear appliance will automatically place a call when an application requires access to the Internet (e.g. sending e-mail, browsing the web, etc).

To establish the connection:

1.From any PC on the network, launch a browser application (e.g. Internet Explorer or Netscape Navigator).

2.The SnapGear appliance will dial the ISP and log in. On the front panel, the COM LED will flash when establishing the connection.

3.The ONLINE LED will light when the Internet link is created and your browser will display the default home page.

4.If Dial-on-demand/Idle time is enabled, the SnapGear appliance will also disconnect from the Internet when the connection is idle for the specified period.

Internet access is automatic if you are using a permanent connection device (e.g. cable modem) or if you are using ADSL or an analog modem configured to stay connected.

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Connecting to the Internet

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Contents Rev May 2nd Table of contents Virtual Private Networking Introduction Terminology Term MeaningLAN Document conventions TCP/IPInstalling and configuring your SnapGear appliance Step ChapterLEDs Your SnapGear applianceLabel Activity Description SnapGear appliance back panels Network interconnections SnapGear appliance features Software featuresLAN link features Internet link featuresDial-in connection features Environmental features Static IP reset Getting startedNew Networks 10.0.0.0 10.255.255.255 10/8 prefix192.168.0.0 192.168.0.255 192.168.0/24 prefix Configuring the SnapGear appliance on your network Page Set up IP addresses Your SnapGear appliance was found on the network Multiple SnapGear appliances were found on the networkYour SnapGear appliance needs an IP address Administrative password SnapGear Management Console web administration pagesInitial setup using Linux Using linsetipUsing an existing local Dhcp or Bootp server Ping -b subnet broadcast address Arp -aConfiguring a new local Dhcp or Bootp server Edit the /etc/inetd.conf fileSnapGear Quick Setup LAN port quick setup LAN port quick setupISP connection quick setup ISP connection quick setupGetting started Configuring the PCs on your network TCP/IP properties Connecting to the Internet Physically connect modem deviceConnect to Internet cable modem Select Internet connectionConnect to Internet Adsl Connect to Internet direct Connect to Internet modemISP. The Password and Confirm Password fields must Field DescriptionAdvanced configuration option Internet failoverFollowing figure shows the failover configuration screen Failed connection Configure PCs to use SnapGear appliance Internet gateway Establishing the connectionDial-in server configuration Dial-in server configuration Dial-in setup Dial-in setupField Description Dial-in user accounts Dial-in user account creationFollowing figure shows the user maintenance screen Dial-in password error Account listRemote user configuration For Windows 95 and WindowsServer types Windows Connect to dialogue boxClick Next to continue 11 Connection availability 13 Remote access login screen Network configuration IP configurationNetwork configuration Advanced IP configuration Advanced IP configurationNetwork configuration Dhcp server configuration Dhcp serverNetwork configuration Traffic shaping Advanced networkingAdditional routes Incoming access FirewallIncoming access administration services Incoming access configurationExternal access to services Configure external access to servicesPort forwarding configuration Port forwardingOutgoing access Security group classes configurationOutgoing access settings Firewall rulesIntrusion detection and blocking configuration Intrusion detection and blockingPage Content filtering Content filtering Filtering levels and reporting Filtering Level Description1VPN tunneling using the Pptp server Virtual Private NetworkingPptp client setup Pptp client configuration Pptp server setup Enable and configure the Pptp VPN server Pptp server setupField Description Configuring user accounts for VPN server 4PPTP VPN server accounts screenVirtual Private Networking Configuring the remote VPN client VPN Pptp IP addressVirtual Private Networking VPN client setup Windows 95 and WindowsYour VPN client is now set up correctly Windows NT Network and dial-up connections This displays the Destination Address window Connecting the remote VPN client IPSec setup 12 IPSec setup13 Add new IPSec connection Virtual Private Networking 14 Automatic keying setup Aggressive mode phase 1 settings Technique DescriptionIPSec interoperability System PasswordTime server Diagnostics AdvancedFlash upgrade Reset buttonTechnical support Technical supportAppendix a LED status patterns LED Pattern Status ActionAccess Logging Appendix B System LogDefault Deny Eth0Eth1 PppCreating Custom Log Rules Forward Iptables -I Forward -j LOG -i eth+ -o eth+ -p tcp Administrative Access Logging Rate LimitingBoot Log Messages