3Com iCV-03a, iCV-01a, iCV-08 user manual Appendix C IP Address, Subnet and Gateway

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Appendix C: IP Address, Subnet and Gateway

Appendix C: IP Address, Subnet and Gateway

This section discusses Communities, Gateways, IP Addresses and Subnet masking

Communities

A community is a string of printable ASCII characters that identifies a user group with the same access privileges. For example, a common community name is “public”. For security purposes, the SNMP agent validates requests before responding. The agent can be configured so that only trap managers that are members of a community can send requests and receive responses from a particular community. This prevents unauthorized managers from viewing or changing the configuration of a device.

Gateways

Gateway, also referred to as a router, is any computer with two or more network adapters connecting to different physical networks. Gateways allow for transmission of IP packets among networks on an Internet.

IP Addresses

Every device on an Internet must be assigned a unique IP (Internet Protocol) address. An IP address is a 32-bit value comprised of a network ID and a host ID. The network ID identifies the logical network to which a particular device belongs. The host ID identifies the particular device within the logical network. IP addresses distinguish devices on an Internet from one another so that IP packets are properly transmitted.

IP addresses appear in dotted decimal (rather than in binary) notation. Dotted decimal notation divides the 32-bit value into four 8-bit groups, or octets, and separates each octet with a period. For example, 199.217.132.1 is an IP address in dotted decimal notation.

To accommodate networks of different sizes, the IP address has three divisions – Classes A for large, B for medium and C for small. The difference among the network classes is the number of octets reserved for the network ID and the number of octets reserved for the host ID.

Class	Value of First Octet	Network ID
A	1-126	First octet
B	128-191	First two octets
C	192-223	First tree octets

Host ID Last three octets Last two octets Last octet

Number of Hosts

16,387,064

64,516

254

Any value between 0 and 255 is valid as a host ID octet except for those values the InterNIC reserves for other purposes

Value	Purpose
0, 255	Subnet masking

127Loopback testing and interprocess communication on local devices 224-254 IGMP multicast and other special protocols.

WebCAM - user manual

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Contents ICV-01a / iCV-03a / iCV-08 WebCAMContents Page Introduction FeaturesPackage Contents WebCAM Front and Back view Step Hardware InstallationIntroduction Web InterfaceView Video Information Basic Settings Advanced Settings Using the Web InterfaceTo View Video Using ActiveX ControlsWeb Interface Web Interface Using Sun Java Controls Web Interface System Status InformationSystem Information Ii. Network StatusEvent Log Current ConnectionsWebCAM Event Log Operator privilege Camera Settings Basic SettingsPatrol Settings Boundary HotSpot SettingsAuto Patrolling FormatNetwork Secondary DNS Server IP Primary DNS Server IPIv. Port Number Http Port NumberWebCAM Default Dynamic DNS Use Default Domain NameRegistration complete. Account details shown as follows Login Name Service ProviderLogin Password Ii. Other Dynamic DNSWhen Connection should be made Account SettingsUse Public IP to register Iii. PPPoEUser Name PasswordPermission IP FilterBlocked IP List Ii. Block IP addressEvent Notification Advanced SettingsEvents RecipientsWeb Interface Event Notification Camera a Motion Detected Motion Detection EnableCamera a or Camera B Always On orSend image every … seconds Detection SensitivityStop sending after … emails or image idle for … seconds ScheduleDigits … Loop from … to …Email Server … RecipientBegin End hhmm Image RecordingSend image every … minutes Send to FTP Server & Send EmailEmail of Image Recorded Mail / FTPIi. Email Settings FTP SettingsEmail Server Requires Authentication FTP ServerSending a test mail Iii. Sending Test MailIv. Email Address Book System SettingsTime Server System Time UpdatesSystem Time Iv. Snmp Settings Iii. LED SettingsTime Zone Relative to GMT System Time yyyy/mm/dd hhmmssImage Server Choose Yes to enable this feature or No to disable Community. Click Add to add WebCAM to My List Unit added to My List Ii. Email Preference LanguageInterface Language Save Current Configuration Ii. Save / Restore SettingsRestore Previous Configuration Reset to factory defaultView Images Using PDA / PPC / mobile View Images Using PDA / PPC / mobile Installation Using the UtilityBasic Settings Account Settings Setup WizardClick on Setup Wizard Use the following IP Address Obtain an IP address by DhcpSelect Enable PPPoE connection Obtain an IP address by BootpUsing the Utility Program Launch WebCAM Using the Utility Program IP Address IP ConfigurationDevice Password when accessing from Utility Advanced for password and Http configurationIi. Management Protocol Click IP ConfigurationRefresh Upgrade FirmwareUser can do a manual search by clicking the Refresh MultiMonitor Installing MultiMonitorMultiMonitor MultiMonitor Device Access by Image Server Image Server Address Access by WebCAM Address Host Address Remote PortUser Password Image Server PortMultiMonitor Account Display the current Camera settings Camera SelectImage Zoom Camera RotationWhen Motion Display the Motion Detection Settings Enable MotionDetect SensitivityPath CompressionConfigure Settings for Email Notification Protocol Snmp SettingsUsing Snmp to update network ports MultiMonitor MultiMonitor MultiMonitor System ViewAccount Management… Change Password …User Permission Choose Manager or User HelpAdd User… Drag-and-Drop Feature Double click on the icon on the desktop, to view the images Port Forwarding for WebCAM Appendix a Router ConfigurationSMC SMC2404WBR Appendix a Router Configuration TCP UDP TCP Appendix a Router Configuration Appendix a Router Configuration Appendix a Router Configuration Appendix a Router Configuration Appendix a Router Configuration Action Allow always Appendix a Router Configuration TCP TCP Appendix a Router Configuration TCP Appendix a Router Configuration Method 1 Through WebCAM Web Appendix B Methods to Update WebCAM FirmwareMethod 2 Using the Utility software Appendix C IP Address, Subnet and Gateway Subnet Mask Routing and Filtering Subnetting and Subnet MasksTerm Definition Appendix D Glossary