What are the network management functions of routers?

first, the statistical function of the router

We can monitor the user statistics on the Internet to count how many devices are currently online.

The User Statistics table can understand the IP address and Mac correspondence of each user machine connected to the HiPER, and the number of packets received and sent by the user since the launch, and if a user has a particularly large number of downloaded packages, the user may be downloading or having other aggressive behavior, This reminds the administrator to be careful.

　　Second, the traffic management of routers

Through the System State ―> port statistics, you can view each LAN port, WAN port and DMZ port input and output bytes, number of broadcast packets, the average rate of traffic in each direction, with bps and PPS respectively, WAN port input equivalent to download traffic, in the network internal traffic is relatively normal situation, The out of the LAN port should be close to the in of the WAN port, and the in and WAN ports of the LAN port are closer.

We can easily understand the current network traffic status.

　　Third, the router's attack warning

When users of the LAN are using multi-threaded software or have an attack, they can see the number of connections it occupies, including the total number of connections, and the current number of connections on HiPER.

If the number of failed connections, then the total number of NAT connections required for the entire network has exceeded the number of connections to the system, there are 2 possible reasons, one is too many attacks, two if there is no attack, the performance of the machine is no longer applicable, need to replace the better equipment, if some machines over-limit the number of connections, Then most of the users have a Dos attack.

　　Four, the router's fault diagnosis

Network traffic is high, in the Ethernet conflict is more or suffer similar to Blaster-type attacks, have to rely on some advanced packet capture software or hardware to find fault, and this failure to find software or hardware equipment is expensive, in the network using the switch is also through the mirror port of the switch to operate, And many companies use more than one switch, so it's inconvenient.

Now, on the hiper of the router as an exit, we can look at each user's behavior through the admin interface, such as whether the user is using the WWW service or chatting via MSN. You can also look at some unusual behavior, such as a machine that is constantly sending out a broadcast packet or its destination address is a multicast address.