Efficient security maintenance LAN experience sharing

1. When there is a failure to check the network card first in the LAN, the phenomenon of internet is often occurring, once encountered such a problem, we should first carefully check the network of the machine, network card settings are normal. When checking, we can open the Control Panel/System/device Management/Network adapter Setup window in turn by using the mouse. Check for interrupts and I/O address conflicts in this window (it is better to set the interrupts for each machine to be the same for comparison) until "This device is working properly" in the properties of the network adapter. And you can find yourself at least in your network Neighborhood, indicating that your NIC is configured without problems. 2, confirm network cable and networking equipment work normally when we check the network card is not a problem, at this time we can look at the network of other computers on the Internet, if you can not see the other machines on the network, this situation may be due to the interruption of network connectivity problems. Network wiring failures usually include the internal fault of the network line, twisted pair, RJ-45 Crystal head contact bad, or the network connection device itself quality problem, or connection problem. At this point, we can use the wire detector to detect the line is broken, and then use the alternative method to test the quality of network equipment is not a problem. In the case of the network cable and the NIC itself, let's take a look at the reasons for the software setup, for example, if the interrupt number is incorrect, it may cause a failure. 3, check whether the driver is intact hardware has been checked and confirmed, and then check the driver itself is damaged, if not damaged, to see if the installation is correct. If these can be judged normal, the device does not conflict, is not connected to the network, this time you can remove the network adapter in the system configuration, and then restart the computer, the system will detect the existence of new hardware, and then automatically look for the driver to install, the author in the installation of Windows 98 in the process of Peer-to-peer network has repeatedly used this method to solve the "network" problem. 4, the correct network card settings in the determination of media no problem, but still can not be connected, and then return to the network card settings. See if there are conflicting device resources, and there are many times when conflicts are not always prompt. Possible device resource conflicts are: NE2000 compatible NIC and COM2 are in conflict, all using IRQ3, (Realtek RT8029) PCI Ethernet network cards and display cards are "like" IRQ10. In order to resolve this device conflict, we can follow the following steps to set up: First in the Settings window will be COM2 screen, and forced to interrupt the network card to 3; If you encounter a PCI interface network card and video card conflict, we can use do not assign IRQ to display card solution, is to set the Assign IRQ for VGA in CMOS to "Disable". 5, disable the PNP features of the network card, although the network card support PNP function, but installed after the hairNow you can't work well or even work. To do this, we can use the PNP function of shielding card to solve this problem. To disable the PNP feature of the NIC, you must run the Setup program for the network adapter (typically in the driver package). After you start the Setup program, go to the Settings menu. Disables the PNP function of the NIC and modifies the IRQ that can be set to a fixed value. Save the setting and exit the Setup program so that if no other devices occupy the IRQ, you can guarantee that there will be no IRQ conflicts. In addition, if you are installing the Windows 95/98 operating system, you must ensure that the operating system does not treat the corresponding interrupt type as a PnP-capable IRQ, so modify the interrupt type from "Pci/isa PnP" to "Legacy ISA" in "CMOS". Use this method to resolve device conflicts for most PNP network adapters, but not necessarily for all PCI network adapters, because some network adapter setup programs do not provide the option to disable the PNP feature at all. "Responsible Editor: Yutie TEL: (010) 68476606" Original: Efficient security maintenance LAN experience sharing return to network security home