Some operational records of the CentOS system

1. Turn off SELinux

　　

Vi/etc/selinux/config
Reboot

　

2. Install the Secure Dog Linux version

Http://bbs.safedog.cn/thread-63020-1-1.html

Can take the wget way to download the release package (32-bit system to change 64 to 32): Wget http://safedog.cn/safedog_linux64.tar.gz Step 2: Execute the following command under the root account: Tar xzvf safedog _LINUX64.TAR.GZCD Safedog_linux64chmod +x *.py./install.py

　　

3. Modify the default 22 port

Modify the configuration file  vi/etc/ssh/sshd_config  find #port 221 segment, here is the identity by default using 22 port, modified as follows: Port $  Port 999  then save exit  Perform/etc/init.d/sshd restart  test Yes, repeat, delete the 22-port line.

Edit Firewall configuration: Vi/etc/sysconfig/iptables

  Enable Port 999.

  Execute/etc/init.d/iptables Restart

　　

Others to be determined ....

Some operational records of the CentOS system