Dedecms Background Login Blank site is linked to the solution

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DEDECMS Web site login blank, the site was linked, the site was black solution, this may be Dede system security issues, before the notice, until found that the problem is more and more serious only to pay attention to, to do not be black, the first step is according to the Dede official to set directory security, The second step is to update the security issue in a timely manner, and the third step is to be careful not to expose your site's background and program types.

OK, now say after the Black (Dede of the background landing blank, Dede site was hung black chain) solution.

First of all, there must be a Trojan back door exists, unless the general side dishes, but now linked are more understand the point, will put a back door afraid you under the link they will change.

Of course, can not log in the background how to detect it?

So to find the file problem, even if you replace the background of the entire landing folder there is no way to solve, the last side of some they will be back file hanging horse, this time you want to upload background files (recommended: Delete the original)

Then you can consider backing up the data if the site is not important, reinstall, haha, this is the last resort.

In general you can first modify the root of the index.html the first page of the link to him.

You find data/common.inc.php look inside the database link information there is no fault, I have a station inside this file are linked, really silent.

What's next? So look at the common.inc.php in the Include directory. Are these common files, are they usually changed here and linked?

Then replace it quickly.

The next word you can generally log in the background, can not be in my article (http://blog.waixin.cn/?p=43) message, in the background detection Trojan (Dede official tools, set inside)

You will find that some PHP files are detected, usually under the image folder.

I was black should be Dede ask inside the problem, Dede question and answer the loophole, so the general oneself do not use the function can install less installation, one more dongdong more than a dangerous.

If you have a lot of websites on the same server that's dangerous, there may be other sites inside the Trojan has not been cleared, the general Trojan is the right to manage your space is the same, so do not despise this, this is why some Dede Webmaster said their station group has been black.