Several methods to prevent hacker attacks from the Internet

1. Hide IP addresses

If a hacker wants to launch an attack on us, he must first find our IP address. Otherwise, he cannot start. The following three methods are commonly used to hide IP addresses:

1. Use Proxy Server: If we browse websites, chat, BBS, and so on, then the website is left on the Proxy Server rather than our website.

2. Use tool software: Norton Internet Security has the function of hiding IP addresses. This method is invalid if your computer's front-end has a router or IP sharing hub, because NIS can only hide the IP address of your computer.

3. for computers in the LAN, the Proxy address in the browser should be the address of the computer connected to the Internet.

The above measures prevent intrusion to some extent, but there are still omissions. Hackers can still use port scanning to find your IP address. Further measures are "port prevention ".

Ii. Port prevention

Hackers or viruses constantly scan your computer ports when they intrude into you. If you have installed a port monitoring program (such as Netwatch), this monitoring program will receive a warning. Intruders may frequently scan ports to find opportunities, and the monitoring program will prompt you constantly, which makes it difficult for you. If you encounter such intrusion, you can use the tool software to close unused ports. For example, use "Norton Internet Security" to disable unused ports 80 and 443. These two ports provide HTTP services. If you do not provide Web browsing services, you can

Close; close ports 25 and 110. These two provide SMTP and POP3 services. You should also disable them when not using them. You can also disable some other ports without using them. Closing these ports is tantamount to blocking intruders from the door.

In TCP/IP protocol, Windows uses port 139 to connect to other computers installed on Windows. Disabling this port can prevent the vast majority of attacks. Steps for disabling the service: [network] → [configuration] → [TCP/IP] → [properties] → [binding] → [Microsoft network client] (remove "√" before this item, if this item is not found, it cannot be changed ).

Disable sharing and set a password

If your computer does not have a local area network **, you can disable all hard disks and folder sharing. The steps are as follows: [network] → [file and printer sharing] → [allow other users to access my files] Remove "√" in front of "√". If you cannot close all hard disks or folder sharing, you need to set the read-only and password for the shared part. Step: Right-click a [Folder] → [share…], Note that the shared passwords of Windows 9x and Windows Me are easily cracked, while the passwords of Windows 2 K and Windows XP are relatively secure, so it is wise to grade your operating system.

ActiveX Control and Java Protection

ActiveX controls and Java Applets in web pages have strong functions, but their functions are often unknown. Once they are malicious, the damage is quite large and they have to be prevented. IE also took a cautious attitude towards this and provided a variety of options. Specific steps are as follows: [tools] → [Internet Options] → [security] → [custom levels]. we recommend that you take a strict defense attitude towards ActiveX controls and Java programs on webpages you do not know.