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Is it dangerous to publish your IP address online?

It is very dangerous to expose your IP address. There is a simple reason. Exposing your IP address is equivalent to telling the enemy what to attack. So, what is the danger of revealing your IP address? How can we reduce these dangers? Don't worry, listen to me slowly.

Let's talk about danger first. If you are using Windows operating system without any patches, then you may often encounter inexplicable blue screens, which may be blown up by someone. At present, the most commonly used vulnerability is IGMP vulnerability, and the tools in this area are IPHacker. The symptom of bombing is that the network connection is cut off and resumed after restarting. The remedy is to install the corresponding patch. In addition, I have also encountered a small tool called ArpTest, which can attack an IP address or an IP address, but it can only be used in the LAN. The phenomenon is that a dialog box appears and disappears after entering the car. The danger is that this software can set the sending times and time intervals. Assume that the time interval is 0 and the number of transmissions is 9999999999. How do you feel? In addition, if you expose your IP address in the chat room or IRC chat, the trouble will be even greater, and I'm afraid you can't chat well.

Everyone uses OICQ, right? The answer should be yes. There are too many tools in OICQ at present. If you reveal your IP address, there are tools to find out the OICQ number of your IP address, and there are also remote OICQ password cracking tools. It seems that your OICQ is really unsafe! If you have read my two articles "Security Risks of BBS2000 and BBS3000" and "Weak Encryption Mechanism of OICQ", you should know that the harm of exposing your IP address does not stop there! At present, BBS2000 and BBS3000 forums based on Yu Zi abound. I think you must have been there. Anyone who has read that article must know the loophole of Cookie in this forum, so the danger is coming. A malicious attacker can use similar social engineering methods to lure you to visit one of his web pages, and the script embedded in this web page can easily extract your user name and password in that forum from the Cookie on your machine. In addition, if you log in to OICQ as an nt user, and your IP address is exposed, the attacker is likely to use the current NT vulnerability to obtain any files on your host. It should be much more convenient to crack the OICQ password than to crack the SAM password. Not only that, if you expose your IP address, the tracker can find a lot of information about your system, the scanner can find a lot of loopholes in your host, people who have mastered the loopholes in your system can invade your host and then control your machine, and there are annoying monitoring software, hehe. . . Isn't it horrible? !

Then, I will talk about how to reduce these dangers. As for the security of the system and software, we should pay attention to updating the version and installing patches in time, and often visit some security websites to keep abreast of the security trends of the systems and software we use. In addition, install anti-virus software and firewall. Ha ha. . . It seems a little off topic. Let me talk about the security of IP address. There was a software that claimed to hide the IP address, but it turned out to be false. Besides, as far as I know, there is no good way to completely hide your IP address. However, there are some ways to reduce the risk of exposing IP addresses. For example, you can filter the ICMP protocol by setting a firewall policy, so that when others PING your IP address, they will return a timeout error, which may make people mistakenly think that your IP is unavailable and naturally will not attack you. Also, reasonable use of proxy servers can also hide your IP address relatively, reducing the risk of being attacked, right?