How to break perl bind port?

Hello,

i wanted to ask how i can break function of the perl script that is used here:

- Removed Please Don't Link to Images -

(bind p0rt t0 /bin/sh), back-c0nnect [perl]

By breaking i mean the server is protected so when someone try to use such method, it will not work.

This is the php code behind that php script binding function: pastebin com/RKTCp7ME (pasting on the third party site as unlisted, to reduce chances the code is found by h@cker who then make a workaround in their scripts)

Thank You

 

# grep tmp /etc/fstab

# mount|grep /tmp