Note: The configuration and instructions of Linux in this article have been tested on the CentOS 6.5 64-bit operating system. For other types and versions of the operating system, configuration may vary. Please refer to the official documentation for the details about relevant operating systems.
When the client connects to the Linux VMs, the command line or secure log displays an error message as follows:
• fatal: mm_request_send: write: Broken pipe.
• Connection closed by 192.168.0.1.
This problem may be caused by the abnormal running of SSH service affected by viruses such as udev-fall.
Take the udev-fall virus as an example, an attempt could be made to temporarily restore the SSH service to normal running as follows:
Enter the system via VNC.
Use the following command to query the virus process:
ps aux | grep udev-fall
root 24486 0.0 0.0 108340 1848 pts/0 S 10:30 0:00 /usr/bin/udev-fall
Description: The number in the second column indicates the process ID (PID).
kill -9 *
kill -9 24486
chkconfig udev-fall off
rm -rf /usr/bin/udev-fall
rm -rf /etc/init.d/udev-fall
service sshd restart
It can not determine that whether the system is tampered by the virus or malicious intruder, or has other hidden virus files. Therefore, in order to maintain the server's long-term stable running, it is suggested to restore the server to a normal state through the system disk reset.
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