When it comes to protecting the security of the system, most users will think of “installing anti-virus software”. However, sometimes, anti-virus software will also be negligent against certain malicious viruses for various reasons. For example, in most cases, hacking remote systems must upload Trojans or backdoors to remote systems. In addition to anti-virus software, this malicious intrusion can also pass the more secure Win7 system and disk quotas under the system. To strengthen the prevention! Let's take a look at the specific implementation methods:
First, the principle of prevention
Win7 system for the NTFS partition has a "disk quota" function, it can limit NTFS disk space. For example, except for yourself, other login users are allowed to use only how much space, refuse to allow other users to write files of a certain size, and so on.
Using this principle, we can make restrictions and use the "anything other than ourselves can not write files to the target partition" to prevent hackers from remotely putting Trojans into our system. . This is actually equivalent to a "automatically restore card", any file writes made by the user to the system will be invalid.
Second, the configuration process
understand this defense principle, the next configuration is much simpler. Generally, we mainly protect the partition where the system is located (must be the NTFS partition), so follow the steps below to configure it:
STEP1: Right click on the installation partition where your system is located, select “properties&rdquo The command enters; then switches to the "quota" tab item and clicks the "display quota setting" button below, as shown in Figure 1.
▲ Figure 1 Click the Show Quota Settings button
STEP2: Under the “Quotas” configuration dialog shown in Figure 2, first check “Enable Quota Management” and “Remove”. Leave the disk space to the user who exceeds the quota limit. Then select the “Disk Space Limit” item and set the size of the disk space used by the user in the system, for example, 10 KB. So if the user passes in a file larger than 1000KB in this partition, the file will be rejected by the system and cannot be smoothly transferred to the partition.
▲ Figure 2 Quota Configuration Dialog Box
STEP3: Click the “Quota Item” button in the above figure to open the quota management window. The meaning of this step is to give your own Win7 login account. Subject to the above quota configuration, you can operate freely. This step is very important! Otherwise you will have to be restricted. The method is to click the “Quota → New Quota Item” command in the quota configuration window; then add the account that you have logged in to Win7; finally, keep “Add new quota item” in the “Do not limit disk usage”. Select the state and confirm the exit, as shown in Figure 3.
▲ Figure 3 Configuring Exception User
Tips:
If you want to apply the same quota parameters set above on other partitions, right-click on the configured items in the quota item window. And select the "Export" command from the right-click menu, as shown in Figure 4; then select another partition and also enter the "Quota Item" window, and then through the menu "Quota → Import & rdquo; command You can quickly set disk quotas in the current partition.
▲ Figure 4 Export quota parameters
Well! After the above simple three-step configuration, your system partition has another layer of security protection. In addition to logging in with your own account, all other unfamiliar accounts or if you want to write files larger than 10KB, will be rejected by Win7, "Automatically restore" effect is quite good. I want to implant a Trojan in my system, no way!