Re: DNS and SMTP

["Russell J. Wood" <rjw () open-cpp net>]

On Fri, May 28, 2004 at 06:16:46AM -0700, kaps lock wrote:
> Hi All,
> I am a security new bie.I would like to know or
> atleast if somebody can have me some pointers to good
> turtorials on
>
> 1)DNS
> basically i want to be able to understand everything
> about DNS ,using nslookup,dig inorder to be a good
> security analyst.like how i could determine OS of a
> dns server ,or say how i could determine what evrsion
> of BIND  it is using etc.

The most recommended book available on this subject is DNS and BIND 4th ed. by
Paul Albitz and Cricket Liu. Very informative.

> 2)SMTP
> If somebody could tell me what is an Object ID and how
> does it function and how it is decided upon!!Like the
> tree that is followed.Also could a system be
> compromised if a attacker nows the communitry string?

Again, it's probably best if you purchase a book on your preferred MTA.

Another alternative is to read the RFC's on the two topics.

- Russell

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