Increase safety awareness: Beware of your ADSL cat

Everyone should know, now a lot of cats with automatic dialing function, we can put the account number in the ADSL cat dial-up software, so that each time the computer starts the ADSL cat can automatically dial, an open computer can be online. The above work is done through the following steps:

One: Enter the cat's default address in the browser, such as: http://192.168.1.1, this time will pop up a dialog box, generally enter the ADSL cat when the default account and password are root, or admin, or do not need an ID and password, and the problem is here. Why did you say that?

Two: We should know the principle of ADSL! When we dial, the Telecommunications Bureau will randomly assign you an IP address. And this IP address is a regular, a region corresponding to a section of IP, as our IP is assigned to the form of 61.*.*.*, we can ipconfig/all this command to view their current access to IP.

Three: For example, my ADSL obtained IP is 61.138.4.2. So in this way, the last digit of the IP change is likely to be the IP that another user is using. We have entered the browser from 61.138.4.3 to 61.138.4.254. If an ADSL cat's login dialog box pops up, it means that we have connected to the other's ADSL cat and then try to enter a few accounts and passwords. How did you get in? Any one of these parameters can be changed, once we see who is unhappy can make each other's cat off, and the other side may think their cat is bad.

Today, I did an experiment, the success is 80%, because our bureau seems to be unaware of this problem, and almost all of the ADSL cat has not changed their password. Because the telecommunications installation of ADSL use of ADSL cat model is so several, and the same type of ADSL modem's default password is the same, which greatly increased the likelihood of guessing the password. Let's look at the following picture: