I posted here before asking for help in determining whether or not I was having security breechs. I was told (off the board) that the entries I was concerned about was not a big deal. OK, I know I am a little paranoid, but am new to being open to ssh connections from the `net, and being paranoid doesn't mean their not really after you!
Alright, I use MCC to set up the ssh server, and had specifically set it to not allow root logins. Yesterday, was double checking how I had it set up and to my surprise I found that root login somehow changed to "Yes - with password". OK, changed it back and also put "root" in deny users file. Today, checked again, and the file had been changed to allow root login - yes.
I also have line after line of this type of entry:
Nov 8 05:48:05 localhost sshd[16874]: Connection from 208.67.248.222 port 47297
Nov 8 05:48:05 localhost sshd[16874]: reverse mapping checking getaddrinfo for mail.reflx.net failed - POSSIBLE BREAK-IN ATTEMPT!
Nov 8 05:48:05 localhost sshd[16874]: User root from 208.67.248.222 not allowed because listed in DenyUsers
Nov 8 05:48:05 localhost sshd[16874]: error: Could not get shadow information for NOUSER
Nov 8 05:48:05 localhost sshd[16874]: Failed password for invalid user root from 208.67.248.222 port 47297 ssh2
Nov 8 05:48:05 localhost sshd[16874]: Excess permission or bad ownership on file /var/log/btmp
Nov 8 05:48:06 localhost sshd[16876]: Connection from 208.67.248.222 port 47363
Nov 8 05:48:06 localhost sshd[16876]: reverse mapping checking getaddrinfo for mail.reflx.net failed - POSSIBLE BREAK-IN ATTEMPT!
Nov 8 05:48:06 localhost sshd[16876]: User root from 208.67.248.222 not allowed because listed in DenyUsers
So, should I be worried, and/or what, if anything should I do?
I have security set to "high", and only have port 22 open to the `net. I know one of the things I should do is put ssh to some oddball port, but other than that?

