RE: Rules
- From: Troy Radtke <TRadtke@xxxxxxxxxxxx>
- To: "'[ISAserver.org Discussion List]'" <isalist@xxxxxxxxxxxxx>
- Date: Fri, 1 Oct 2004 08:28:31 -0500
Security vs. ease of use..... If the point is to be ultra secure, then block
all. If the point is the hacker/virus speed bump, then open all.....
Personally, it's not even a question.... If you're going to open everything
up, Black Ice Defender and ICS would have been a much cheaper solution...
=?)
-----Original Message-----
From: Jim Harrison [mailto:jim@xxxxxxxxxxxx]
Sent: Friday, October 01, 2004 12:18 AM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: Rules
http://www.ISAserver.org
Hear-hear.
The idea that "I'll open everything and only block what I need to" will keep
you hopping as you try to keep up with the 1d10t applications that think
they're smarter than you (Kazaaa, BearShare, etc.).
Lock it down and only open what you need to.
Jim Harrison
MCP(NT4, W2K), A+, Network+, PCG
http://isaserver.org/Jim_Harrison/
http://isatools.org
Read the help / books / articles!
On Thu, 30 Sep 2004 18:53:58 -0700
"Thor" <thor@xxxxxxxxxxxxxxx> wrote:
http://www.ISAserver.org
Best practices would dictate that you only allow what is needed. Everything
should be blocked by default, and only the services needed allowed- and even
then, they should only be allowed for those who need it.
t
----- Original Message ----- From: Aman Bedi
To: [ISAserver.org Discussion List]
Sent: Thursday, September 30, 2004 6:08 PM
Subject: [isalist] RE: Rules
http://www.ISAserver.org
I wont have any anonymous rules coz I wanna force firewall clients
I wanted to know , whether it is right to open everything going out and just
block stuff not needed..OR
Should we block everything going out and just open whats needed ?
Also, is there a need to make servers like internal webservers, domain
controllers, exchange etc any kind of client. Is it ok if I just make all my
servers as SECURENAT (no proxy and no firewall clients on any servers ) ? if
the servers are not initiating any connections. is there a need for them to
be a client ? I am a littler confused on this..
Thanks
Aman Bedi | Systems/Network Administrator
54 West 39th Street, 4th Floor, New York, NY 10018 | Fax +1(212) 764-0269 |
Phone +1(212) 278-0178 ext 234 | www.scanbuy.com
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From: Thomas W Shinder [mailto:tshinder@xxxxxxxxxxx]
Sent: Thursday, September 30, 2004 7:14 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: Rules
http://www.ISAserver.org
Hi Aman,
They way I do it when an organization doesn't use Least Privilege:
Deny Rules first
Anonymous Rules next
Authenticated Rules
HTH,
Tom
From: Aman Bedi [mailto:gurkirpal.bedi@xxxxxxxxxxx]
Sent: Thursday, September 30, 2004 5:40 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] Rules
http://www.ISAserver.org
Hi all
'I know its not the best practice but is it ok.
to have ALL open rules for outgoing traffic ..and
Rules to block things which I don't want like FTP, or messengers , etc etc
above that rule
And for incoming ..
Block all incoming traffic rule (the default rule)
And rules to allow stuff above that
Like
----------------------------------------------------------------------------
---------------------------------------
Rule 1 ------------ block outgoing this
Rule 2 -------------block outgoing this
Rule 3-------------block outgoing ths
.
..
ALL OPEN (int to ext) ----ALLOW ----ALL TRAFFIC -----INTERNAL
--------EXTERNAL
Rule 10 .......Allow incoming this
Rule 11.......Allow incoming this
Rule 12.......Allow incoming this
.
.
Last Deafult Rule -------DENY ----ALL TRAFFIC -----ALL NETWORKS---ALL
NETWORKS
----------------------------------------------------------------------------
-----------------------------------------------
Aman Bedi | Systems/Network Administrator (MCP, MCSD, MCSA 2000, MCSA 2003)
54 West 39th Street, 4th Floor, New York, NY 10018 | Fax +1(212) 202-4318 |
Phone +1(212) 278-0178 ext 234 | www.scanbuy.com
PRIVILEGED & CONFIDENTIAL
The information contained in this email message is intended only for use of
the person or entity to whom it is addressed. The contained information is
CONFIDENTIAL and LEGALLY PRIVILEGED and exempt from disclosure under
applicable laws. If you read this message and are not the addressee, you are
notified that use, dissemination or reproduction of this message is
prohibited. If you have received this message in error, please notify the
sender immediately.
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