Security Warning: 1.35 billion of ARRIS cable modems worldwide can be remotely attacked
A security vulnerability was found in the Wired modem of ARRIS SURFboard. Attackers can remotely attack about 1.35 billion of devices around the world.Security expert David Longenecker explained that a security vulnerability exists in a very popular wired modem produced by ARRIS (formerly Motorola), affecting billions of
After the ADSL installation is completed, you will be waiting for the installation personnel to come to the door for installation. You should know about the installation method. Otherwise, you will not know how to solve the problem if you change the installation method in the future or encounter some minor problems.
The installation of ADSL mainly includes: 1. installation of equipment and lines; 2. Installation of software.
First, let's take a look at the installation and cabling of ADSL device
In the low-end router using DISP interface to view the corresponding serial port status information, including DCD, DTR, DSR, RTS and CTS, such as five status indicators respectively mean? DCD (Data Carrier Detect-carrier detection) DTR (data Terminal ready, terminal prepared) DSR (data Set Ready), RTS (Request to send) CT S (Clear to send clean send) in these five control signals, DTR and RTS are DTE devices (data terminal equipment, which is the router in the actual application), DSR, CTS and
ModemNowsms requires a connection to an SMSC to interface with SMS and MMS networks. a smsc connection can be a GSM Modem-a GSM Modem or phone connected to a PC serial port (or to a USB port ).(You can connect to your laptop via infrared. My configuration is Nokia 6610 + Dell flexibility 600 m)
2. Configure SMSCThe first step is to configure SMSC settings, which tell the gateway how it connects to the GSM
starting the server. The method is to use the IPXCOPY command on one computer to start the receiver and use the "IPXCOPY file name" command on the other computer for transmission. The file name can be a wildcard character, you can also use the/S option to specify files that include subfolders. Of course there are other methods, so I will not introduce them here.
The above is the connection method of LAN. Next we will talk about the Internet method. There are two ways to access the Internet: one
1. you can directly use the ICS shared by the operating system-one machine as the host, which is used to dial up and install dual NICs (so you do not need to purchase additional hubs or switches, you only need to add one more NIC-two computers have three NICs, and make sure that machine 2 needs to access the Internet, machine 1 is the master server ).ICS (Internet Connection Sharing) is a shared Internet service built into Microsoft Windows 2000/XP. When using this service, you only need to chec
Most of ADSL hardware faults are caused by connection looseness, network cable disconnection, Hub damage, and computer system faults. Generally, you can locate the problem by observing the indicator. In addition, the voltage is abnormal, the temperature is too high, and lightning strikes are also prone to faults. If the voltage is unstable, it is best to provide small-Power UPS for the equipment. The MODEM should be dry and ventilated to avoid water f
Option1 (comx-1). value = true
Exit sub
Error_form_load:
Option1 (c-1). Enabled = false
Resume form_load_1Exit sub
Exit subWhy:Msgbox err. DescriptionEnd sub
'Check the serial port
'Check whether the modem command is complete
Private sub chk_modem ()On Error goto why
Dim t as single
Dim L as integer
T = Timer
Do
Combuf = combuf + mscomm1.input
L = instr (1, combuf, "OK ")
Loop until l
If l = 0 thenNo modem
communication protocol operation. The MAC address is expressed in three bits, that is, eight devices can be addressable in one micro-network (the number of connected devices is actually unlimited, but only eight devices can be activated at the same time, one of them is primary, and seven are slave ). Figure 1 shows the topology of a Master/Slave Device in the micro-network. In addition, the Bluetooth system supports point-to-point communication to form a distributed network, that is, one master
Analysis of the problem: Why is the ADSL connection disconnected? Web pages cannot be opened, downloads are interrupted, or online video and audio streams are interrupted. These problems may cause many users to access the Internet through ADSL. However, when you carefully check the status of the adsl modem, you will find that the dial-up login is successful. So what exactly is the problem? How Should ADSL users troubleshoot?
ADSL Network disconnection
save investment; it can enjoy ultra-high-speed network services to provide users with asymmetric upstream and downstream transmission bandwidth; it saves costs, you can call the Internet at the same time without affecting each other, and you do not need to pay additional phone fees when accessing the internet. The installation is simple, and you do not need to apply for additional lines. You only need to install an ADSL Modem on a common telephone li
provider) for advice, or you can make a quick decision with the way you purchased your router's previous network connection.There are several common ways to connect hardware:1, telephone line-> ADSL modem-> Computer2, twisted pair (Ethernet cable)-> computer3, cable TV (coaxial cable)-> Cable modem-> Computer4, optical fiber-> Photoelectric Converter-> proxy server-> PCADSL/VDSL PPPoE: A computer running a
Cause of failure
This problem may occur if one of the following conditions is true: • Line noise is present on the telephone line connected to the modem.
• The modem appears to behave abnormally.
• A timing problem occurs between the computer and the modem.
Warning: If you modify the registry incorrectly by using Registry Editor or other methods, you may have
At present, wireless router has become a home wireless sharing and Internet application of the mainstream, about the use of wireless router is also a lot of users are very interested in, we will pick some of the more representative of the wireless router problem, for you one by one to explain its fault solution, I hope you can analogy.
The wireless router's red diagnostic or power light has been flashing. Wireless router does not work properly, how to solve?
A: This is generally because the wi
needs to provide the server's network address.Under the current TCP/IP protocol, the so-called network address of the server is an IP address, currently we use the address of the IPv4, that is, the IP protocol 4th version of the address, each address by four bytes total 32 bits. Theoretically, you can represent a 4G network address. Usually we use the distance to separate four numbers to represent an address, each number corresponds to a byte of the address, for example, Microsoft's IP address
The following is the ADSL Router installation on Datang Telecom A-400 to open the routing and UT Kang ADSL Router installation of detailed introduction, read the article today, you will be familiar with Datang Telecom A-400 to open the routing and UT Kang ADSL Router installation method.
In the edit box, enter the Ethernet port IP address of the adsl modem. If this item is not changed during the first configuration or configuration, the default value
We should be familiar with PPP protocols, so here we will focus on the content of multiple PPP connection protocols. First, let's review the concept of PPP. The acronyms of Point-to-Point Protocol. A data link protocol used for dial-up telephone connection, for example, between a computer and the Internet. compared with SLIP (Serial Line Interface Protocol), PPP provides better protection for data integrity and security at the cost of additional costs.
Do you think the speed of dial-up Internet
①. 1483B: refers to the 1483 bridging protocol. This function is implemented based on the Basic bridging protocol and on the first layer of the network physical layer, when this solution is used, the MODEM only acts as a bridge device and does not provide any protocol conversion or address filtering functions. Generally, after the MODEM can be synchronized with DSLAM and the VPI/VCI is set, basically, users
Specification entity (entityspecification) defines a certain type of entity;
Characteristicspecification defines attributes of one or more types of entities;
Characteristicspecvalue defines the possible values of feature types;
You can define attributes for productspecification, product, and customer.
So how can we apply Sid's "Specification mode" and "feature mode?2. Introduction of specification mode and feature Mode
The following uses the most common product display page of an e-commerce
The first task is to drive the 3G Nic of China Telecom on a small board. The new thing is to run the network card on the PC first. The driver with the card is not available in Linux, so there are two ways to do that: Google: Is there a Linux open-source driver with the card; the other is to check whether the kernel itself can be supported. Later, it was confirmed that the USB-serial part of the kernel could be driven.
This is a CDMA card, so I searched for something related to the CDMA
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.