RE: Minimum Protocol Rules by Service Type List
- From: "Thomas W Shinder" <tshinder@xxxxxxxxxxx>
- To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
- Date: Tue, 29 Nov 2005 23:13:53 -0600
Hey Tim,
This would be REALLY COOL. As far as I know, there's nothing like this
out there. I have lot of articles covering specific scenarios, but none
of them include SQL or backup agents, because A. I don't know squat
about SQL and B. the herterogenrous backup agent evironment makes me
avoidant because I know it'll generate requests for all the other
vendors.
However, you're younger, smarter and stronger than me, so you might be
able to handle it -- or since your kids are still young, you're better
able to resist requests for MORE.
I've often thought of doing the same thing with my network, which is
production full tilt for us. Four multihomed ISA firewall's serving
three Internet links, three domains, Exchange 2003 (no cluster),
SharePoint Portal Server, IIS sites, MOM, spam whackers, LCS, VoIP,
Windows Media Services, blah blah blah. Lots of whacky POC stuff that
I've never written about, but worked pretty neat, so I decided to keep
it. Maybe I'll like yours so much I'll show mine too :)
So, count me in as thinking this is a great idea. You'll introduce a ton
of good stuff that's not out there yet! Let me know if want any help,
comment, or whatever for this project. If its too long for the venues
you usually publish in, you're welcome to put it up at ISAserver.org and
use as many words, graphics and whatever you want. Maybe after that, I
can suck you into becoming a regular author for the site :-))) We need
a mensa kinda guy for the site, since we lost ours to Microsoft LCA. :(
Tom
Thomas W Shinder, M.D.
Site: www.isaserver.org
Blog: http://spaces.msn.com/members/drisa/
Book: http://tinyurl.com/3xqb7
MVP -- ISA Firewalls
**Who is John Galt?**
> -----Original Message-----
> From: Thor (Hammer of God) [mailto:thor@xxxxxxxxxxxxxxx]
> Sent: Tuesday, November 29, 2005 10:58 PM
> To: [ISAserver.org Discussion List]
> Subject: [isalist] Minimum Protocol Rules by Service Type List
>
> http://www.ISAserver.org
>
> Yo.
>
> In staying true to the concepts of least privilege and
> security in depth, I
> have been testing the minimum allowed protocols required to
> support various
> client-server services. The data I am collecting comes from
> bottom-up,
> step-by-step live protocol analysis-- this for two reasons:
> I've not seen a
> comprehensive list of "this is what you have to allow for X,"
> and of the
> documentation I have seen, most of it includes catch-all protocol
> recommendations rather than the minimum rules necessary.
>
> The reason I bring this up is to get a consensus from the
> group on whether
> or not I should document my findings in such a way as to publish the
> results-- If something like this already exists, I don't want
> to re-invent
> the wheel. If not, I should heavily document my findings in order to
> provide a comprehensive list.
>
> For instance- SQL authentication using "mixed mode
> authentication" simply
> requires a single "SQL Sever TCP 1433 Outbound" from the
> client set to the
> individual server. Integrated authentication via a standard
> library client
> (such as Query Analyzer) not only requires "SQL Server TCP
> 1433 Outbound" to
> the SQL host, but it also requires at least "Kerberos-Sec
> (UDP)" (UDP 88
> Send Receive) and "LDAP (UDP)" (UDP 389 Send Receive) from
> the client to the
> domain controller set. More "robust" clients, such as MS
> Access using a SQL
> Library require a full LDAP (TCP 389) connection from the
> client to the
> domain controller set. While "LDAP (UDP)" may be forced,
> projects digitally
> signed with a certificate require the TCP connection based on
> my testing.
> This is the type of data I'm considering collecting for publication.
>
> The primary reason I am doing this is because my network
> admin (John Wilson)
> and I have decided to rebuild our entire infrastructure in a
> *true* least
> privilege environment. We will completely separate our entire server
> infrastructure from all clients with an *internal* ISA 2004
> configured to
> only allow the minimum protocols through on a host-by-host,
> service-by-service, user-group by user-group basis. This
> will not be a
> test-- this will be in a total Microsoft production
> environment: clustered
> SQL servers, clustered Exchange servers, multiple domain
> controllers ( group
> policy deployments, certificate services, etc) NAS devices,
> shared printers,
> web services, backup agents, custom application
> developments... the Full
> Monty. I've never seen this done in a production environment
> (though I've
> heard many people postulate about it) so I'm kind of excited
> about all of
> this.
>
> So, the main question is: Does a resource like this already
> exist somewhere?
> I figga that if anyone would know, it would be the folks on this list.
>
> t
>
>
> ------------------------------------------------------
> List Archives: http://www.webelists.com/cgi/lyris.pl?enter=isalist
> ISA Server Newsletter: http://www.isaserver.org/pages/newsletter.asp
> ISA Server FAQ: http://www.isaserver.org/pages/larticle.asp?type=FAQ
> ------------------------------------------------------
> Visit TechGenix.com for more information about our other sites:
> http://www.techgenix.com
> ------------------------------------------------------
> You are currently subscribed to this ISAserver.org Discussion
> List as: tshinder@xxxxxxxxxxxxxxxxxx
> To unsubscribe visit
> http://www.webelists.com/cgi/lyris.pl?enter=isalist
> Report abuse to listadmin@xxxxxxxxxxxxx
>
>
Other related posts:
