Please Help! How to STOP them...

Jay Chandler chandler at
Fri Jan 12 23:53:09 UTC 2007

VeeJay wrote:
> I am reading many hundred lines similar to below mentioned?
> Could you please advise me what to do and how can I make my box more 
> secure?
> Jan  9 17:54:42 localhost sshd[5130]: reverse mapping checking 
> getaddrinfo
> for [] failed - POSSIBLE
> Jan  9 17:54:42 localhost sshd[5130]: Invalid user sysadmin from
VeeJay, you've asked several questions now to this list that are very 
simple to solve with even a minimal amount of reading through Google.  
Some people more generous than I have given you the answers, which are 
are immediately met with further questions, most of which are answered 
in the first part of the man page for the relevant program.

I, and I suspect other posters on this list, have little interest in 
reading Unix for Dummies to you.  Technical questions about specific 
failures are one thing, but you're asking things that are covered in any 
decent Unix / FreeBSD book.  Heck, you can even get the FreeBSD Handbook 
for free online.

Please, please, PLEASE RTFM.  If that's too much to ask, try taking a 
class, hiring a consultant, or using a more user-friendly OS.

Jay Chandler
Network Administrator, Chapman University
714.628.7249 / chandler at
Today's Excuse: Incorrectly configured static routes on the corerouters. 

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