Bay Technical Associates manual Reference Guide for the Model RM356 Modem Router

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Reference Guide for the Model RM356 Modem Router

You can wait until an erroneous call is placed, then examine this packet header to determine the source and cause. The IP packet header contains information such as the next-level protocol type (for example, ICMP, TCP, UDP), source and destination addresses, and source and destination port numbers. Analyzing this data reveals the cause of the call, which provides the user with an approach to eliminating the calls. For example, the first line of the packet shows the following (hex values converted to decimal):

•45 00 00 3E 9E 05 00 00 1F 11 CC 9D 8D FB 17 12 CF 45 BC B9 00 89 00 35 Bold characters denote protocol (17, or 11h =UDP).

•45 00 00 3E 9E 05 00 00 1F 11 CC 9D 8D FB 17 12 CF 45 BC B9 00 89 00 35 Bold characters denote source IP (141.251.23.18=local PC).

•45 00 00 3E 9E 05 00 00 1F 11 CC 9D 8D FB 17 12 CF 45 BC B9 00 89 00 35 Bold characters denote destination IP (207.69.188.185=DNS server).

•45 00 00 3E 9E 05 00 00 1F 11 CC 9D 8D FB 17 12 CF 45 BC B9 00 89 00 35 Bold characters denote source port number (137 or 89h=NetBIOS name service).

•45 00 00 3E 9E 05 00 00 1F 11 CC 9D 8D FB 17 12 CF 45 BC B9 00 89 00 35 Bold characters denote destination port number (53, or 35h=DNS).

This packet represents a NetBIOS name service request from a local PC to the DNS server of the ISP. An initial strategy for blocking this type of call would be to set up a call filter to prevent calls from being originated by UDP packets with a source port of 137 (NetBIOS name service). Further investigation would reveal that other ports are associated with NetBIOS services, and these ports should be blocked, too.

A comprehensive list of protocol and port numbers for common IP traffic can be found in IETF RFC1700, “Assigned Numbers.” Many common port numbers are also listed on any Windows PC in a file called \windows\services. In the case of filtering NetBIOS traffic, the relevant ports are:

•137 (TCP and UDP) NetBIOS Name Service

•138 (TCP and UDP) NetBIOS Datagram Service

•139 (TCP and UDP) NetBIOS Session Service

8-10	Filter Configuration

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Contents Reference Guide for the Model RM356 Modem Router NETGEAR, IncEN 55 022 Declaration of Conformance TrademarksStatement of Conditions VCCI-2 Statement Bestätigung des Herstellers/ImporteursCertificate of the Manufacturer/Importer Customer SupportWorld Wide Web Contents Chapter Router Installation and Connection Chapter Remote Node Configuration Chapter System Maintenance Appendix a Technical Specifications Index Contents Figures Xii Tables System Maintenance Syslog and Accounting Menu Fields Audience PrefacePurpose Use of Enter, Type, and Press ConventionsSpecial Message Formats Related Publications Other ConventionsPage About the Router FeaturesChapter Introduction Key Features Support TCP/IP SupportSecurity Management SupportRouting Information Protocol What is a Router?Basic Router Concepts IP Addresses and the Internet Three Main Address Classes Netmask Subnet Addressing Example of Subnetting a Class B AddressNetmask Notation Translation Table for One Octet Number of Bits Dotted-Decimal ValueDotted-Decimal Mask-length Private IP AddressesNetmask Formats Single IP Address Operation Using NAT Single IP Address Operation Using NATAddress Resolution Protocol Domain Name ServerIP Configuration by Dhcp Chapter Router Installation and Connection Package ContentsISP Checklist ChecklistsTelephone Line Checklist Single-User Account Network Checklist Connecting the Router Front Panel of the Model RM356 Modem RouterLED Descriptions Label Activity DescriptionConnecting the Serial Cable Optional Connecting to the Line PortConnecting the Power Adapter Connecting to the Hub PortsConnecting a Telephone, Fax, or Modem Connecting for Configuration Connecting Through the Serial PortConnecting Through a Telnet Connection Chapter Router Configuration Configuration MethodsPowering on the Router Start-up DisplayAction Description Manager Menu CommandsNavigating the Manager Manager Main Menu is illustrated in Figure Number Menu Title Description Manager Menu SummaryManager Menu Summary General Setup Menu Menu 1 General SetupModem Menus Modem Setup MenuModem Setup Menu Parameters Field Description ExampleField Description Default Advanced Modem Setup MenuAdvanced Modem Setup Menu Field Descriptions Ethernet Menu General Setup MenuEthernet General Setup Menu Filter Sets Field DescriptionDhcp and TCP/IP Setup Menu 3 Ethernet Setup Menu FieldsRIP Direction Manager Password Setup Chapter Configuration for Internet Access Information ChecklistInternet Access Configuration Configuration for Single-User Account Switching to a Backup ISP Backup ISP AccountsConfiguring for a Backup ISP Chapter Remote Node Configuration Menu 11.1 Remote Node Profile Fields PPP Options on Editing PPP Options Fields in Menu 11.2 Remote Node PPP OptionsField Description Option Editing Script OptionsScript Options Display Page Chapter Dial-In Configuration Default Dial-In SetupFields in Menu 13 Default Dial-in Setup Dial-In User Setup Fields in Menu 14.1 Edit Dial-in User More On Clid Page Chapter TCP/IP Configuration LAN-to-LAN ApplicationRemote Node Setup Fields in Menu 11.1 Remote Node Profile FieldsMenu 11.3 Remote Node Network Layer Options Fields Static Route Setup RIPEdit IP Static Route Menu Fields Page Chapter Filter Configuration Outgoing Packet Filtering ProcessConfiguring a Filter Set Router Filter StructureAbbreviation Description Abbreviations Used in Menu 21.1 Filter Rules SummaryAbbreviations Used if Filter Type Is IP Abbreviations Used if Filter Type Is GEN Configuring a Filter RuleTCP/IP Filter Rule TCP/IP Filter Rule Menu Fields IP ProtocolTCP Estab Generic Filter Rule Generic Filter Rule Menu FieldsApplying a Filter Set Reducing Unnecessary Calls by Windows Diagnosing the SituationReference Guide for the Model RM356 Modem Router Menu 21 Filter Set Configuration Implementing the FilterShows Menu 21.1.1 TCP/IP Filter Rule Filter Rules Summary Menu Applying the Filter Remote Node Profile MenuCommand Field Name Description Chapter System MaintenanceSystem Maintenance Status Menu Fields System StatusMake an outgoing call Terminal Baud Rate Log and TraceCommand Field View Error LogSystem Maintenance Log and Trace Menu Fields Syslog and AccountingSystem Maintenance Syslog and Accounting Menu Fields Field Command DescriptionDiagnostic Menu System Maintenance Diagnostic Menu FieldsCall Testing and TCP/IP Tools Trace Display for a Successful TCP/IP Protocol ConnectionSystem Tools Trace Display for a Failed TCP/IP Protocol ConnectionSoftware Update Back Up ConfigurationRestore Configuration Command Interpreter Mode Call ControlCall History BlacklistBudget Management Page LAN Link LED Chapter TroubleshootingBasic Functioning Troubleshooting a TCP/IP Network Using a Ping Utility Testing the LAN Path to Your RouterTesting the Path from Your PC to a Remote Device Troubleshooting a Remote Node or ISP Connection Troubleshooting a Remote User ConnectionTroubleshooting the Manager Interface Restoring the Default Configuration and Password Using the Packet and Log Trace Trace the callPacket Trace Display Format Packet Trace Display DefinitionsAppendix a Technical Specifications General SpecificationInterface Specifications Physical SpecificationsEnvironmental Specifications Electromagnetic EmissionsIndex Dhcp Index Index Index TCP/IP

RM356 specifications

Bay Technical Associates RM356 is a state-of-the-art remote monitoring solution designed for a wide range of industries. It is particularly suited for companies requiring a reliable system for tracking and monitoring operations in real-time. This advanced device combines innovative technologies to deliver unparalleled functionality and performance.

One of the standout features of the RM356 is its robust data acquisition capabilities. The device can interface with various sensors and equipment, enabling it to collect critical data from multiple sources. This real-time data collection allows for immediate analysis and facilitates informed decision-making. The RM356 supports various protocols and standards, making it highly compatible with existing infrastructure.

Another significant characteristic of the RM356 is its advanced communication technology. Equipped with both wired and wireless communication options, including LTE, Wi-Fi, and Ethernet, it ensures seamless connectivity in various environments. This versatility enables businesses to monitor operations remotely, reducing the need for on-site presence and enhancing operational efficiency.

The RM356 also incorporates cutting-edge analytics and reporting tools. Its built-in software allows users to visualize data through intuitive dashboards, making it easier to identify trends and anomalies. These analytics capabilities help organizations optimize processes and address potential issues before they escalate, ultimately improving productivity and reducing operational costs.

Security is a top priority for the RM356. The unit comes with robust encryption and authentication measures to ensure that the data it collects remains secure from unauthorized access. This feature is especially critical for industries handling sensitive information or operating in regulated environments.

Additionally, the RM356 is designed with user-friendliness in mind. Its installation process is straightforward, with comprehensive setup guides available for quick deployment. Once operational, users can easily navigate the system interface, allowing for efficient monitoring and management of their operations.

With its combination of advanced features, reliable communication, data analytics, and strict security measures, Bay Technical Associates RM356 stands out as an excellent choice for businesses looking to enhance their monitoring capabilities. Whether in manufacturing, logistics, energy, or other sectors, the RM356 is poised to deliver improved outcomes and support organizations in their quest for operational excellence.