Bo Lynch wrote: > just wanted to get some feedback from the community. Over the last few > days I have noticed my web server and email box have attempted to ssh'd to > using weird names like admin,appuser,nobody,etc.... None of these are > valid users. I know that I can block sshd all together with iptables but > that will not work for us. I did a little research on google and found > programs like sshguard and sshdfilter. Just wanted to know if anyone had > any experience with anything like these programs or have any other advice. > I really appreciate it. Perhaps some FAQs on SSH at the CentOS wiki will help you out too. http://wiki.centos.org/HowTos/Network/SecuringSSH Regards, Max