Turn off outdated and insecure daemons like rsh , telnet , or old versions of ftp by utilizing the chkconfig utility.
RHEL 5.7 introduced several notable improvements that solidified its place in enterprise IT: red hat enterprise linux 5.7 x64 iso 84
(Always verify the SHA‑256 checksum posted on the download page before using the image.) Turn off outdated and insecure daemons like rsh