NetComm NB712 manual Sntp, Move the cursor to sntp and press enter

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14.13.5 SNTP

Time synchronization is an essential element for any business that relies on an IT system. The reason for this is that these systems all have clocks that are the source of time for files or operations they handle. Without time synchronization, time on these systems can vary and this can cause virtual server schedule processes to fail and system log exposures with wrong data.

There are two methods to synchronize time: synchronize with a PC or SNTPv4. If you choose synchronize with PC, the router will synchronize with a PC. If you choose SNTPv4, the router will use the protocol to synchronize with the time server. Synchronization with time server, SNTP v4, needs to configure service, time_server and time_zone. Synchronization with PC does not require the above parameters.

Move the cursor “ >> “ to sntp and press enter.

>> method

Select time synchronization method

service

Tigger SNTP v4.0 service

time_server1

Configure time server 1

time_server2

Configure time server 2

time_server3

Configure time server 3

updaterate

Configure update period

time_zone

Configure GMT time zone offset

list

Show SNTP configuration

To configure SNTP v4 time synchronization, follow the procedures detailed below:

Move the cursor to method and press enter.

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Command: admin sntp method <SNTPv4SyncWithPC>

Message: Please input the following information.

SYNC method (Enter for default) <SyncWithPC> : SNTPv4

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Move the cursor to service and press enter.

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Command: admin sntp service <DisableEnable>

Message: Please input the following information.

Active SNTP v4.0 service (Tab Select) <Enable> : Enable

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Move the cursor to time_server1 and press enter.

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Command: admin sntp time_server1 <string>

Message: Please input the following information.

Time server address(Enter for default) <ntp-2.vt.edu> : ntp-2.vt.edu

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You can configure up to three time servers in this system.

Move the cursor to update_rate and press enter.

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Command: admin sntp update_rate <10~268435455>

Message: Please input the following information.

Update period (secs) (Enter for default) : 86400

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NB712 /

NB714 User Guide

93

YML829

Rev1

 

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Contents Page Contents NB714 User Guide Features Package ContentsIntroduction Routing SpecificationBridging SecurityATM QoS IndicatorsAAL5 Encapsulation WAN InterfacePhysical/Electrical ApplicationMemory Product InformationFirewall Types of Firewall Packet FilteringThere are three types of firewall Denial of Service Attack Circuit GatewayApplication Gateway SYN Flood Ping of deathIcmp Flood UDP FloodFrame Specification Vlan Virtual Local Area NetworkVID uniquely identifies the Vlan to which the frame belongs ApplicationsGetting to know the router Front PanelLED status LAN 1,2,3,4 Rear PanelCheck the Terminal Access Program Connecting your G.SHDSL Modem RouterDetermine Connection Setting Check the Ethernet Adapter in PCBridge EoA Route EoA IPoA PPPoA PPPoE Install the Shdsl RouterCross-over Ethernet cables can be used Port router with network topologyConfiguration via Web Browser Router, which will lose any previous configuration Basic Setup System error or disconnectionClick Basic for basic installation Bridge Mode LAN ParametersEnter Host Name Enter VPI Enter VCI Click LLC Click Next WAN1 ParametersRouting Mode Click Next to setup WAN1 parameters Dhcp ClientLAN IP Type IP type Dhcp ServerIP Address Subnet MaskDNS Server Trigger Dhcp ServiceRelay Dhcp relayAAL5 Encap PPPoE or PPPoAProtocol For more information, refer to the section on NAT/DMZPassword Confirm PasswordUsername Idle TimeEprom Gateway IPoA or EoAEprom Advanced Setup Link Type Annex TypeData rate Data RateMargin range is from 0 to Shdsl SNR marginMargin, the better the line connection Reconnect for better line connectionWAN UBR Unspecified Bit Rate QoS Quality of ServiceCBR Constant Bit Rate PCR Peak Cell Rate in kbpsBridge Eprom Vlan Packets PvidRoute RIP ModeAuto RIP Summary Press ModifyAuthentication required RIP VersionPoison Reverse NAT/DMZ Multi-NAT Multi-DMZVirtual Start IP Address Count Global Start IP AddressVirtual Server Basic Firewall Security FirewallAutomatic Firewall Security Click Advanced Firewall Security and then press Finish Advanced Firewall SecuritySYN Attack Connections and will be unresponsivePing of death attack attempts to crash your system by Addresses originating from your networkDescription DirectionSrc. IP Address Dest. IP AddressFiltering rule will be configured as follow Filtering Rule for Smtp connectionFiltering Result Update Filtering RuleWhen the rule is ordered as ABC Rule Order10.0.0.0 172.16.6.0 Permit 10.1.99.0 172.16.0.0 Deny Any IP QoS NB714 User Guide Administration Security NB712 / NB714 User Guide MIB SnmpCommunity Snmp statusVersion Community Click on Time Sync Time SyncSntp service Time ServerTime Zone Utility System Info Backup Configuration Restore Configuration10.2 Config Tool Lose all the configured parametersUpgrade To logout the router, press logout LogoutRestart You can monitor the following StatusLAN-to-LAN connection with bridge Mode CO sideLAN Parameters Enter IP 192.168.1.1 Enter Subnet Mask WAN1 ParametersEnter Gateway 192.168.1.1 Enter Host Name Enter VPI Enter VCI EncapCPE Side Host Name Enter SohoVCI32 EncapLLC Dhcp Service LAN to LAN Connection with Routing ModeClick Route and CO Side then press Next IP Address 192.168.20.1 Subnet Mask 255.255.255.0 Host NameWAN Parameters Click Next to setup the IP parametersIP Address 192.168.10.1 Subnet Mask 255.255.255.0 Host Name Click Route and CPE Side then press Next192.168.30.2 Serial Console Useradmin PasswordTelnet Baudrate 9600 Data Bits Parity Check Stop Bits Flow-controlOperation Interface Window structure Menu Driven Interface Commands To choose another parametersCtrl + C To quit the configuring item Ctrl + Q For help Menu Tree 14.7 Configuration Done via utility command Ping Packet internet groper command AdminUtility Exit Quit systemStatus System ShowConfig ScriptAdministration RebootWrite PingUser Profile Edit Community Entry List Show SnmpSupervisor Password and ID Sntp Move the cursor to service and press enterMove the cursor to sntp and press enter Move the cursor to timeserver1 and press enterMove the cursor to list and review the setting Utility SetupExit ModeShdsl 14.16.3 WAN After enter add menu, the screen will prompt as follow BridgeMove the cursor to vlan and press enter Vlan14.16.6 802.11Q Vlan Follow the following steps to configure 802.11q VlanFor each VLAN, Vlan ID is a unique number among 1~4095 You can review the list of RIP parameters via list command Generic command can setup RIP mode and auto summery modeRoute Screen will display the followingIP share 14.16.8 LANYou can configure NAT parameters in nat menu 14.16.10 NATMapping After key in enter, the screen will prompt as below 14.16.11 PATfirewall security level can configure via level command You can enable the demilitarized zone via active command14.16.12 DMZ FirewallActive DoS Protection IPQoS Dhcp You can view the Dhcp configuration via list commandDefault DNS proxyHost name RJ-45 Network Ports Appendix a Cable Information10Mbps 100MbpsStraight and crossover cable configuration Straight-Through CablingCross-Over Cabling No connection Shdsl Line Connector Console CableRxD O TxDContact Information Appendix B Registration and Warranty InformationProduct Warranty
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