Abrir puertos modem cable SB4100

[Santus]

Tengo un modem cable Motorola SURFBoard SB4100 y R,que es la empresa que me servicio me dice que tiene los puertos cerrados, ¿alguien sabe como abrirlos?
Me dijeron que podía mirar con un scaner de puertos a ver si tenía alguno libre, ¿alguien sabe de dónde me puedo bajar uno y como funciona?

[teg]

hola, en dslreports hay una opcion en el boton dsl tools que te permite escanear los puertos TCP y UDP de tu ordenador, tambien en adslspain hay una sección de utilidades en la que puedes encontrar el portscan programa muy util para escanear los puertos de tu ordenador, si tu modem es un router, se puede acceder a su configuracion poniendo en el navegador su dir IP o haciendole un telnet o un ftp o si lo tienes al puerto serie con un programa de terminal, y una vez dentro hay una zona donde pueden definir las reglas de filtrado IP y puedes dar acceso o denegarlo a los puertos TCP o puedes dirigir las llamadas a un puerto a una IP privada de tu red, etc.

Mira en la web de motorola y busca un manual.

bye

[Santus]

¡Gracias por contestar!

Después de escanear los puertos, vi que los únicos no bloqueados eran : 135, 139 y 1214.
Cuando intentaba acceder a mi servidor en los pertos 135 y 139 me decía que no estaban reservados por motivos de seguridad (o algo así) y si ponía el servidor en el 1214 solo podía verlo un amigo mío que está en R de becario desde el ordenador del curre, la demás gente no podía acceder.

A continuación os pongo las especificaciones, yo deduzco que no es un router, ¿es así? Si no fuese un router, ¿se puede hacer algo?

Especificaciones :

SURFboard
External DOCSIS Cable Modem [SB4100]

FEATURES

SB4100

CableLabs DOCSIS 1.0 Certified
DOCSIS 1.1 hardware based
External cable modem with USB for Windows 98/2000/Me and Ethernet 10/100BaseT for Windows 95/98/2000/NT/Me, Mac and UNIX
Front panel stand-by switch enhances network security to end-user
Supports up to 32 users (1 via USB and up to 31 via Ethernet)
Ethernet and USB connections are bridged allowing LAN traffic between USB device and Ethernet LAN
64/256 QAM RF downstream receives data up to 38 Mbps
16 QAM/QPSK RF upstream provides data transfers up to 10 Mbps
Seamless communications with 10/100BaseT auto sensing Ethernet lines
Remote management via SNMP
Easy installation, automatic configuration
Software upgradeable over network
Platform independent - compatible with most operating systems
Compact design is perfect for home and office
Front panel LEDs for easy troubleshooting
Internal universal power supply
Global safety approval and certificates:
CB scheme (EN60950/IEC950)
-CE-Evaluation test report (EN55022/EN55024)
-UL approved
-Microsoft WHQL approved

The Motorola SURFboard SB4100 series external cable modems continue to be your fastest link to high-speed data services over cable, as well as extremely reliable. Based on the new DOCSIS 1.1 specification, the DOCSIS 1.0 certified SB4100 incorporates the successful SB3100 platform that improves overall speed, and enables the modem to support future service offerings. The SB4100 has a high-speed processor to handle advanced Quality of Service (QoS) and IP filtering functions that MSOs use to improve the surfing experience.

As with the SB3100 model, the power supply is inside the enclosure to eliminate the inconvenient "power brick". In response to customer feedback from the SB2100 modem, the front panel LEDs are straightforward for easy troubleshooting. Now it's easier than ever to understand how the modem is operating.

The SURFboard SB4100 series cable modems require only a standard HTML browser in the subscriber's computer, making them virtually platform independent. With the SB4100, most PCs, Macs, and other computers can be easily connected to any DOCSIS network. The SB4100 continues to support the 64 and 256 QAM link technology that is the heart of the DOCSIS data network, providing up to 38 Mbps of raw data transfer rates in a single 6 MHz channel.

The SURFboard SB4100 truly makes plug-and-play a reality! The SB4100 simplifies installation with the new USB connectivity, and provides enhanced security with its front panel standby switch. The switch disconnects the USB and Ethernet connection to the computer without disconnecting the cable modem from the RF network, providing security, flexibility and performance.

As with the previous SURFboard cable modems models, the SB4100 has the ability to support multiple users, and is absolutely ideal for a small business or home network. The SURFboard cable modem is completely compatible with Windows 95/98/2000/NT/Me, Macs, and UNIX computer systems.

Motorola's SURFboard external cable modems talk directly to the equipment at the cable service provider's headend, so the users are not required to do any setup. The SB4100 allows the MSO to monitor both the cable modem and the data signals coming in and out of the unit, which can be invaluable in diagnosing network problems.

The SURFboard SB4100 design enhancements continue to build on the proven Motorola SURFboard cable modem architecture. Motorola is the market leader with innovative and reliable products that provide our customers with outstanding performance and exceptional value.

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Specifications

SURFboard External DOCSIS Cable Modem[SB4100]

CPE Network Interface USB, Ethernet 10/100BaseT (auto sensing)
Data Protocol TCP/IP
Dimensions 7.2" H x 2.0" W x 7.8" L
Power 9 Watts (nominal)
Input Power 100-240 VAC, 50-60 Hz
Cable Interface F-Connector, female, 75 Ohms
DOWNSTREAM
Demodulation 64 or 256 QAM
Maximum Data Rate 38 Mbps
Bandwidth 6 MHz
Symbol Rates (max) 5.069 Msym/s (64 QAM)
5.361 Msym/s (256 QAM)
Operating Level Range -15 to +15 dBmV
Input Impedance 75 Ohms (nominal)
Total Input Power <30 dBmV
Frequency Range 88 to 860 MHz
UPSTREAM
Modulation 16 QAM or QPSK
Maximum Data Rate 10 Mbps
Bandwidth 200-3200 kHz
Symbol Rates 160.320.640.1280 and 2560 Ksym/s
Operating Level Range +8 to +55 dBmV (16 QAM)
+8 to +58 dBmV (QPSK)
Output Impedance 75 Ohms (nominal)
Frequency Range 5 to 42 MHz (edge to edge)
ENVIRONMENTAL
Operating Temperature 0° to 40° C
Storage Temperature -30° to +80° C
Operating Humidity 0 to 95% R.H. non-condensing

Specifications subject to change without notice.

[Santus]

Además, lo único que había para bajarse eran drivers para la conexión USB (yo lo tengo con una tarjeta de red). Aún encima la documentación técnica no era de libre acceso, había que registrase y esperar que comprobasen que eras un distribuidor autorizado a gran escala.