Shulou(Shulou.com)05/31 Report--

This article mainly introduces the solution to the remote failure of the server, which is very detailed and has a certain reference value. Friends who are interested must finish reading it!

Step 1: if the machine is not connected to see if it is being pulled or pulled by the intranet, open kvm to see if the system is running properly. 1. Remote port communication, try remote, see the specific error report; enter the system, see whether the rules (e.g. / etc/ssh/sshd_config, / etc/hosts.allow, / etc/hosts.deny, firewall, etc.) or security software (cloud lock, etc.) restrict login

Step 2: remote port communication, try remote to see if the security dog whitelist is turned on, etc. Kvm can not log in, you can first ask the customer if you can restart 2. The remote port is blocked and the "80" port is open. Open kvm to enter the customer's system, and use the command "netstat-lntup" to check whether the ssh service port is running or whether it is consistent with the customer submission. For example, if the ssh is running normally, the port is consistent with the customer submission: 1. Check whether the firewall adds an exception. 2, check the log, you can try to change the port first to see whether the port can be remote (consider whether the port may be blocked domestically).

Step 3: the remote port is blocked to enter the system to see if the firewall has been released, check the log

Step 4: serious remote port drop, "80" port or IP long ping is normal, consider brute force cracking, enter the system, cmd window use the command "netstat-an" to see the specific situation.

Step 5: solve other reasons according to the situation.

The above is all the contents of this article, "the solution to the remote failure of the server". Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!

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