Our hotel uses telecom 10M optical fiber, which has a slow dropping speed.

You are obviously a network protocol attack!

At present, there are a lot of network attacks and deception in LAN. The main reasons for not being able to access the network are:

(1) There are a lot of network protocol spoofing in the local area network, which will cause your host to be deceived by false information and unable to find the real device or respond to the request. For example: ARP spoofing, which everyone is familiar with.

(2) There are a lot of protocol and traffic attacks in the network, and network channels appear, which makes the network card or switch unable to transmit or exchange data. So your computer host can't access the server. Such as DDOS attacks, SYN flood attacks and other network protocol attacks.

Traditional solution: (1), ARP binding, can alleviate the problem to some extent.

Note: At present, there are seven forms of network attack or deception using arp protocol, especially the second generation ARP will clear your binding. Therefore, ARP binding is a temporary solution (the effect is not necessarily).

(2), there is a rude way is to redo the system, so that you can clear this protocol attack program.

Note: it takes time and effort, and the problem will definitely be solved by then. You will contact through various channels, and the same problem will definitely appear in the future.

The solution that I came into contact with can completely solve the problem that the network server can't be accessed is: using the patrol immune network security solution, installing the "terminal immune driver" on each computer network card in the network, and the terminal MAC is taken from the physical network card instead of the system, effectively preventing the MAC clone from counterfeiting; The terminal driver realizes bidirectional control, which not only resists external threats to the machine, but more importantly suppresses attacks from the machine. In this way, network protocol spoofing and excessive attacks can be intercepted directly on the network card, and the server can be accessed normally.

Having said that, I would like to briefly introduce the security solution of the road patrol immune network. In fact, there are a large number of network protocol attacks in many companies' networks, which lead to some applications (network printers can't connect, internal servers can't access quickly and slowly, voice calls are unclear, and even computers can't work normally). For these people, including me, I thought it was caused by a system virus or an external network attack. I didn't understand until I communicated with professionals. Simply put, 80% of many network problems are caused by internal network problems (network protocol attacks). Traditional solutions (firewall, intrusion detection system and anti-virus) are mainly passive defense against external network, system Trojan virus and file virus, but there is no effective solution to network protocol attacks. The patrol immune network solution is not a single product, but a complete set of components consisting of software and hardware, intranet security protocols and security policies. It consists of access module, operation center, terminal immune driver, intranet security protocol and security policy. We can solve the attack problem from the perspective of intranet, deal with the current trend of complex and diversified network attacks and more attacks from intranet, and solve the network threat more effectively. Through this scheme, our network can become strong and self-defense and management.