security question about /var/log/secure

["Gregory Machin" <gregory machin gmail com>]

Hi
I've been looking at the /var/log/secure log file .. what does
`/var/run/' permissions are lax mean and what would cause it .. I
haven't done much in the /var/run directory, or anything that I can
remeber to affect the permissions ... and what  Connection closed by
UNKNOWN mean ... does it mean it could not resolve the connection dns
name ??

Sep 13 11:21:55 server pam_timestamp_check: PAM `/var/run/' permissions are lax
Sep 13 11:22:30 server last message repeated 5 times
Sep 13 11:22:51 server last message repeated 3 times
Sep 13 11:22:52 server sshd[24997]: Connection closed by UNKNOWN
Sep 13 11:22:58 server pam_timestamp_check: PAM `/var/run/' permissions are lax
Sep 13 11:23:33 server last message repeated 5 times
Sep 13 11:23:47 server last message repeated 2 times
Sep 13 11:23:52 server sshd[25010]: Connection closed by UNKNOWN
Sep 13 11:23:54 server pam_timestamp_check: PAM `/var/run/' permissions are lax
Sep 13 11:24:29 server last message repeated 5 times
Sep 13 11:24:50 server last message repeated 3 times
Sep 13 11:24:52 server sshd[25024]: Connection closed by UNKNOWN