Every time I log into my terminal, I have many errors. Here is the current list:
(1405 messages not shown)
aug/06/2013 07:57:06 system,error,critical login failure for user debug from 182.1
8.18.197 via ssh
aug/06/2013 07:57:09 system,error,critical login failure for user baby from 182.18
.18.197 via ssh
aug/06/2013 07:57:13 system,error,critical login failure for user science from 182
.18.18.197 via ssh
aug/06/2013 07:57:16 system,error,critical login failure for user technology from
182.18.18.197 via ssh
aug/06/2013 07:57:19 system,error,critical login failure for user biology from 182
.18.18.197 via ssh
aug/06/2013 07:57:22 system,error,critical login failure for user chemistry from 1
82.18.18.197 via ssh
aug/06/2013 07:57:25 system,error,critical login failure for user math from 182.18
.18.197 via ssh
aug/06/2013 07:57:28 system,error,critical login failure for user lab from 182.18.
18.197 via ssh
What are these? Is someone trying to get in? How do I protect myself against it if they are?
Thanks.