[plug] /newbie - DNS problems?

[Earnshaw, Mike]

List,

Attached is a report I have been receiving regularly on our Linux box. Being
fairly new and not knowledgeable of DNS, how bad are these messages?

Comments from more knowledgeable DNS people would be greatly appreciated.

Many thanks

Mike

> 
> 
> 
> Security Violations
> =-=-=-=-=-=-=-=-=-=
> May 24 10:47:56 usswa named[415]: bad referral (net.au !< tyco.net.au)
> 
> Unusual System Events
> =-=-=-=-=-=-=-=-=-=-=
> May 24 10:05:18 usswa named[415]: ns_forw: query(lemis.com) A 
> RR negative cache entry (I.GTLD-SERVERS.NET:)
> May 24 10:28:01 usswa named[415]: ns_forw: query(pbworld.com) 
> A RR negative cache entry (I.GTLD-SERVERS.NET:)
> May 24 10:36:29 usswa named[415]: sysquery: 
> query(ns1.jsnet.com) A RR negative cache entry (I.GTLD-SERVERS.NET:)
> May 24 10:51:07 usswa PAM_pwdb[22000]: (ssh) session opened 
> for user marshallj by (uid=0)
> May 24 10:51:07 usswa sshd[22000]: log: Password 
> authentication for marshallj accepted.
> May 24 10:52:13 usswa sshd[22000]: log: Closing connection to 
> 203.108.63.250
> May 24 10:52:13 usswa PAM_pwdb[22000]: (ssh) session closed 
> for user marshallj
>