Re: OT: Firewall question

2005-02-09 Thread Jochem van Dieten
Andy Ousterhout wrote:
 Which is more secure:  Running your firewall on the NT 2003 Server or running
 it on a router?

Both.

Jochem

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RE: OT: Firewall question

2005-02-09 Thread Andy Ousterhout
LOL. So both can be equally secure?

-Original Message-
From: Jochem van Dieten [mailto:[EMAIL PROTECTED]
Sent: Wednesday, February 09, 2005 10:50 AM
To: CF-Talk
Subject: Re: OT: Firewall question


Andy Ousterhout wrote:
 Which is more secure:  Running your firewall on the NT 2003 Server or
running
 it on a router?

Both.

Jochem



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Re: OT: Firewall question

2005-02-09 Thread Jochem van Dieten
Andy Ousterhout wrote:
 LOL. So both can be equally secure?

Yes, they can be equally secure. But why not run one on both?

Jochem

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RE: OT: Firewall question

2005-02-09 Thread Andy Ousterhout
Well, cause I don't need the router if I go directly to the NT machine (I've
got a hub too).  So the doubling up adds 1 more layer to be broken thru?  So
you route LAN through router into Server and out of Server to hub?

Andy

-Original Message-
From: Jochem van Dieten

Andy Ousterhout wrote:
 LOL. So both can be equally secure?

Yes, they can be equally secure. But why not run one on both?

Jochem



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RE: OT: Firewall question

2005-02-09 Thread Robertson-Ravo, Neil (RX)
With a hardware firewall to be extra safe.



-Original Message-
From: Jochem van Dieten [mailto:[EMAIL PROTECTED] 
Sent: 09 February 2005 16:57
To: CF-Talk
Subject: Re: OT: Firewall question

Andy Ousterhout wrote:
 LOL. So both can be equally secure?

Yes, they can be equally secure. But why not run one on both?

Jochem



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Re: OT: Firewall question

2005-02-09 Thread Jochem van Dieten
Andy Ousterhout wrote:
 Well, cause I don't need the router if I go directly to the NT machine (I've
 got a hub too).  So the doubling up adds 1 more layer to be broken thru?  So
 you route LAN through router into Server and out of Server to hub?

Hub? LAN? WAN? Router? Firewall? How about some ASCII art?

Jochem

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RE: (OT) Firewall

2004-08-03 Thread James Smith
I have been using IPCop with great success for a couple of years now.
Simple to use, fast to respond to patching requirements.Old versions are
RedHat based but the current Dev Tree uses Linux From Scratch.

--
Jay 

 -Original Message-
 From: Michael Dinowitz [mailto:[EMAIL PROTECTED] 
 Sent: 02 August 2004 17:51
 To: CF-Talk
 Subject: (OT) Firewall
 
 Anyone know of a god network firewall system? Zonealarm is 
 good for a single machine, but I think that mothernature.com 
 needs a system wide firewall. What do you use, what do you suggest?
 Thanks
 
 --
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 http://www.houseoffusion.com
 For all your ColdFusion needs
 

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Re: (OT) Firewall

2004-08-02 Thread Howie Hamlin
We use sonicwall appliances and are very happy with them.They're easy to set up and work great.\

Regards,

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- Original Message - 
From: Michael Dinowitz 
To: CF-Talk 
Sent: Monday, August 02, 2004 12:51 PM
Subject: (OT) Firewall

Anyone know of a god network firewall system? Zonealarm is good for a
single machine, but I think that mothernature.com needs a system wide
firewall. What do you use, what do you suggest?
Thanks

-- 
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Re: (OT) Firewall

2004-08-02 Thread Jochem van Dieten
Michael Dinowitz wrote:

 Anyone know of a god network firewall system?

What features do you need? Statefull I presume, so how big should 
the state table be? Throughput in pps? SYN-proxy? Payload 
inspection? Redundancy/fail-over? Clickety-click or CLI? 
SSL-offloading? VPN-server? etc.

Jochem
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Re: (OT) Firewall

2004-08-02 Thread Jacob
Netscreen.Now Jupiter I think.

Using them for over 4 years.Have not found one bad thing about Netscreen.

At 09:51 AM 8/2/2004, you wrote:
Anyone know of a god network firewall system? Zonealarm is good for a
single machine, but I think that mothernature.com needs a system wide
firewall. What do you use, what do you suggest?
Thanks

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Re: (OT) Firewall

2004-08-02 Thread Joe Rinehart
Hi Mike,

Anyone know of a god network firewall system?

For his/her/its networks, common mythology has it the God uses a guy
named Peter.However, the other side has its tools too:

http://www.amazon.com/exec/obidos/tg/detail/-/B6L558/qid=1091465888/sr=8-1/ref=sr_8_xs_ap_i1_xgl14/002-8189120-5867211?v=glances=booksn=507846

Seriously though...as a developer who's not a network guy who's been
asked to to networkish type stuff, I've had good luck with the
rack-mountable, standalone, web-administratable dedicated devices made
by Nokia and the like.My experience with software-based firewalls
has been shaky, but, again, I'm not a netadmin.

-joe

- Original Message -
From: Michael Dinowitz [EMAIL PROTECTED]
Date: Mon, 2 Aug 2004 12:51:00 -0400
Subject: (OT) Firewall
To: CF-Talk [EMAIL PROTECTED]

Anyone know of a god network firewall system? Zonealarm is good for a
 single machine, but I think that mothernature.com needs a system wide
 firewall. What do you use, what do you suggest?
 Thanks

 -- 
 Michael Dinowitz
 http://www.houseoffusion.com
 For all your ColdFusion needs
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Re: (OT) Firewall

2004-08-02 Thread Critter
Anyone know of a god network firewall system? Zonealarm is good for a
single machine, but I think that mothernature.com needs a system wide
firewall. What do you use, what do you suggest?
Thanks

i've used kerio for personal fw.. i /think/ they might have a network
solution...
http://www.kerio.com


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Re: (OT) Firewall

2004-08-02 Thread Donna French
Since the topic is sort of alive hereis there a good resource online to tell the differences in routers, switches, etc?

I do programming and web dev for my company and trying to do light networking as needed here too. 

Thanks,
Donna

- Original Message - 
From: Critter 
To: CF-Talk 
Sent: Monday, August 02, 2004 12:01 PM
Subject: Re: (OT) Firewall

Anyone know of a god network firewall system? Zonealarm is good for a
single machine, but I think that mothernature.com needs a system wide
firewall. What do you use, what do you suggest?
Thanks

i've used kerio for personal fw.. i /think/ they might have a network
solution...
http://www.kerio.com

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RE: (OT) Firewall

2004-08-02 Thread Che Vilnonis
I second SonicWall. Piece of caketo use.
-Original Message-
From: Howie Hamlin [mailto:[EMAIL PROTECTED]
Sent: Monday, August 02, 2004 12:56 PM
To: CF-Talk
Subject: Re: (OT) Firewall

We use sonicwall appliances and are very happy with them.They're easy to
set up and work great.\

Regards,

--
Howie Hamlin - inFusion Project Manager
On-Line Data Solutions, Inc. - www.CoolFusion.com
inFusion Mail Server (iMS) - The Award-winning, Intelligent Mail Server
PrismAV - Virus scanning for ColdFusion applications
 Find out how iMS Stacks up to the competition:
http://www.coolfusion.com/imssecomparison.cfm

 - Original Message -
 From: Michael Dinowitz
 To: CF-Talk
 Sent: Monday, August 02, 2004 12:51 PM
 Subject: (OT) Firewall

 Anyone know of a god network firewall system? Zonealarm is good for a
 single machine, but I think that mothernature.com needs a system wide
 firewall. What do you use, what do you suggest?
 Thanks

 --
 Michael Dinowitz
 http://www.houseoffusion.com
 For all your ColdFusion needs
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Re: (OT) Firewall

2004-08-02 Thread Cutter (CF-Talk)
I use a Watchguard Firebox X500 (scalable hardware solution, very 
reasonable, with lots of add ons). The new NetGear Gigabit switches are 
extremely reasonable. Still using a Cisco router...

Cutter

Michael Dinowitz wrote:
 Anyone know of a god network firewall system? Zonealarm is good for a
 single machine, but I think that mothernature.com needs a system wide
 firewall. What do you use, what do you suggest?
 Thanks
 
 -- 
 Michael Dinowitz
 http://www.houseoffusion.com
 For all your ColdFusion needs

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RE: (OT) Firewall

2004-08-02 Thread Dave Watts
  Anyone know of a god network firewall system?
 
 What features do you need? Statefull I presume, so how big 
 should the state table be? Throughput in pps? SYN-proxy? 
 Payload inspection? Redundancy/fail-over? Clickety-click or CLI? 
 SSL-offloading? VPN-server? etc.

Jochem's asking all the right questions, as usual, but if you're interested
in seeing how firewalls work, and don't mind building your own, you might
look at one of the many Linux firewall distributions available, like
Smoothwall. These can be perfectly suitable for many uses, and are kind of
fun to play with as well.

Dave Watts, CTO, Fig Leaf Software
http://www.figleaf.com/
phone: 202-797-5496
fax: 202-797-5444
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Re: (OT) Firewall

2004-08-02 Thread Michael Haggerty
Personally, I use IPTables for network firewall protection, both because of the price and the ease of use. For me, it is simpler to crank out a list of rules on the command line than to trust some GUI that may or may not be doing what it says it is doing. 

Also, as a Flash developer who sometimes works with 'wierd ports', being able to configure NAT on the fly is incredibly useful.

 
M

Michael Dinowitz [EMAIL PROTECTED] wrote:
Anyone know of a god network firewall system? Zonealarm is good for a
single machine, but I think that mothernature.com needs a system wide
firewall. What do you use, what do you suggest?
Thanks

-- 
Michael Dinowitz
http://www.houseoffusion.com
For all your ColdFusion needs
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RE: (OT) Firewall

2004-08-02 Thread WebSite CFtalk
Checkpoint solutions is easy to setup and manage.

 
Tha hardware / software bundles (for example NOKIA IP130) is very close
to a solid state firewall if such a thing existed :)

 
http://www.checkpoint.com/products/choice/platforms.html

 
IMHO...

 
Helge (-:



From: Michael Dinowitz [mailto:[EMAIL PROTECTED] 
Sent: 2. august 2004 18:51
To: CF-Talk
Subject: (OT) Firewall

Anyone know of a god network firewall system? Zonealarm is good for a
single machine, but I think that mothernature.com needs a system wide
firewall. What do you use, what do you suggest?
Thanks

-- 
Michael Dinowitz
http://www.houseoffusion.com
For all your ColdFusion needs 

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Re: (OT) Firewall

2004-08-02 Thread Jochem van Dieten
Dave Watts wrote:
 
 What features do you need? Statefull I presume, so how big 
 should the state table be? Throughput in pps? SYN-proxy? 
 Payload inspection? Redundancy/fail-over? Clickety-click or CLI? 
 SSL-offloading? VPN-server? etc.
 
 Jochem's asking all the right questions, as usual, but if you're interested
 in seeing how firewalls work, and don't mind building your own, you might
 look at one of the many Linux firewall distributions available, like
 Smoothwall. These can be perfectly suitable for many uses, and are kind of
 fun to play with as well.

I was probably going to recommend that anyway, only when you are 
firewalling a very fat pipe (Gbit or more) or you have specialty 
requirements you might need something with specialty hardware.

The difference is that I would recommend to build your own on 
OpenBSD. OpenBSD is pretty much designed for running on the edge 
of your network, and IMHO it is far ahead of other firewall 
systems in terms of power and features. Statefull firewall 
clustering, loadbalancing and failover, SYN-proxy, an IP-based 
anti-spam solution of the ugliest kind (for the spammer) 
integrated into the firewall right on top of what is arguably the 
most secure Unix ever:
http://www.countersiege.com/doc/pfsync-carp/
http://www.openbsd.org/

The upside of OpenBSD: everything is in the manual.
The downside of OpenBSD: the developers are not afraid of strong 
words to tell you so.

Jochem
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RE: (OT) Firewall

2004-08-02 Thread Dave Watts
 The difference is that I would recommend to build your own on 
 OpenBSD. OpenBSD is pretty much designed for running on the 
 edge of your network, and IMHO it is far ahead of other 
 firewall systems in terms of power and features.

Yeah, the only reason I didn't recommend it is because I think it's a little
harder to learn those. But they're definitely worth learning!

Dave Watts, CTO, Fig Leaf Software
http://www.figleaf.com/
phone: 202-797-5496
fax: 202-797-5444
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RE: (OT) Firewall

2004-08-02 Thread Cary Gordon
We use, recommend and sell SonicWall products.We also sell Cisco (Pix).

SonicWall is reasonably priced, easy to use, and well supported.

Cary Gordon
The Cherry Hill Company

_

From: Michael Dinowitz [mailto:[EMAIL PROTECTED] 
Sent: Monday, August 02, 2004 9:51 AM
To: CF-Talk
Subject: (OT) Firewall

Anyone know of a god network firewall system? Zonealarm is good for a
single machine, but I think that mothernature.com needs a system wide
firewall. What do you use, what do you suggest?
Thanks

-- 
Michael Dinowitz
http://www.houseoffusion.com
For all your ColdFusion needs

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RE: OT-Firewall

2004-02-05 Thread Jochem van Dieten
Tom Kitta said:
 Using just Windows packet filtering is not enough, it is stateless
 and doesn't offer much protection. It is better than nothing at all,
 but not much more.

It is sufficient. If you are suffering from attacks that start messing
with for instance syn flags *and* are subtle enough to pass the
router, you have bigger problems anyway.

 Here is my estimate of the security your windows box:
 1 no firewall at all
 2 using MS build-in packet filter
 3 personal firewall
 4 using a router with a firewall
 5 using real firewall that is statefull on common OS
 6 using real firewall that is statefull on dedicated OS
 7 using real proxy firewall on common OS
 8 using real proxy firewall on dedicated OS

I would swap 2 and 3.

Also, 4 to 8 might have different positions depending on what you are
ranking exactly. I would rank a Cisco router with dedicated hardware
firewall blades a bit higher as a real firewall on common OS.

Jochem
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RE: OT-Firewall

2004-02-05 Thread Cary Gordon
We recommend Cisco and Sonicwall. For most applications, the SonicWall will 
do everything needed and it is has a great administrative interface.

The Cisco PIX is more flexible, but it needs a lot of attention and an 
expensive Cisco maintenance contract so you have something to attend to it 
with.You can run one of these without going to Cisco's PIX school, but I 
don't recommend it.

We do sell these, as well.

Cary Gordon
The Cherry Hill Company

At 01:37 PM 2/4/2004 -0600, you wrote:
Ok so what HW Firewall would you recommend?
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Re: OT-Firewall

2004-02-04 Thread Jochem van Dieten
Eric Creese wrote:

 Any recommendations for a good, inexpensive firewall for a web server?

Hardware or software?

If hardware, other server running a diskless OpenBSD.
If software, which OS?

Jochem

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RE: OT-Firewall

2004-02-04 Thread Eric Creese
OS - Single Web server running Win2kSP4

 
Looking for software.

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RE: OT-Firewall

2004-02-04 Thread Tom Kitta
If you want something easy to setup, it will not be free, but will cost you
a bit. Most hard to setup FW are 'free' i.e. they either come with
operating system or are free add ons (like using Linux or OpenBSD. Try to
look for an appliance (otherwise known as HW firewall) - a little box which
is designed to just do firewalling for you, they tend to be more secure,
cheaper (than say ISA on windows box) and easier to setup than FW running on
top of a well known OS.

You may also consider picking a good book, since any firewall can live up to
its full potential only if the sysadmin knows what he/she is doing.

TK
-Original Message-
From: Jochem van Dieten [mailto:[EMAIL PROTECTED]
Sent: Wednesday, February 04, 2004 1:04 PM
To: CF-Talk
Subject: Re: OT-Firewall

Eric Creese wrote:

 Any recommendations for a good, inexpensive firewall for a web server?

Hardware or software?

If hardware, other server running a diskless OpenBSD.
If software, which OS?

Jochem

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immigrants don't work
and steal our jobs
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RE: RE: OT-Firewall

2004-02-04 Thread Mike Brunt
Eric, we use Tiny Firewall for this sort of requirement. 

http://www.tinysoftware.com/home/tiny2?la=EN

Hth, I am sure Jochem will have some good recommendations on this also.

Kind Regards - Mike Brunt

Original Message ---
OS - Single Web server running Win2kSP4

 
Looking for software.

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RE: OT-Firewall

2004-02-04 Thread Eric Creese
Ok so what HW Firewall would you recommend?

-Original Message-
From: Tom Kitta [mailto:[EMAIL PROTECTED]
Sent: Wednesday, February 04, 2004 12:16 PM
To: CF-Talk
Subject: RE: OT-Firewall

If you want something easy to setup, it will not be free, but will cost you
a bit. Most hard to setup FW are 'free' i.e. they either come with
operating system or are free add ons (like using Linux or OpenBSD. Try to
look for an appliance (otherwise known as HW firewall) - a little box which
is designed to just do firewalling for you, they tend to be more secure,
cheaper (than say ISA on windows box) and easier to setup than FW running on
top of a well known OS.

You may also consider picking a good book, since any firewall can live up to
its full potential only if the sysadmin knows what he/she is doing.

TK
-Original Message-
From: Jochem van Dieten [mailto:[EMAIL PROTECTED]
Sent: Wednesday, February 04, 2004 1:04 PM
To: CF-Talk
Subject: Re: OT-Firewall

Eric Creese wrote:

 Any recommendations for a good, inexpensive firewall for a web server?

Hardware or software?

If hardware, other server running a diskless OpenBSD.
If software, which OS?

Jochem

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immigrants don't work
and steal our jobs
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RE: OT-Firewall

2004-02-04 Thread Tony Weeg
nokia ip380 is what we just installed, 2 of them with checkpoint's latest
release.hardened hardware with a solid software platform running on it!

tw 

-Original Message-
From: Eric Creese [mailto:[EMAIL PROTECTED] 
Sent: Wednesday, February 04, 2004 2:37 PM
To: CF-Talk
Subject: RE: OT-Firewall

Ok so what HW Firewall would you recommend?

-Original Message-
From: Tom Kitta [mailto:[EMAIL PROTECTED]
Sent: Wednesday, February 04, 2004 12:16 PM
To: CF-Talk
Subject: RE: OT-Firewall

If you want something easy to setup, it will not be free, but will cost you
a bit. Most hard to setup FW are 'free' i.e. they either come with
operating system or are free add ons (like using Linux or OpenBSD. Try to
look for an appliance (otherwise known as HW firewall) - a little box which
is designed to just do firewalling for you, they tend to be more secure,
cheaper (than say ISA on windows box) and easier to setup than FW running on
top of a well known OS.

You may also consider picking a good book, since any firewall can live up to
its full potential only if the sysadmin knows what he/she is doing.

TK
-Original Message-
From: Jochem van Dieten [mailto:[EMAIL PROTECTED]
Sent: Wednesday, February 04, 2004 1:04 PM
To: CF-Talk
Subject: Re: OT-Firewall

Eric Creese wrote:

 Any recommendations for a good, inexpensive firewall for a web server?

Hardware or software?

If hardware, other server running a diskless OpenBSD.
If software, which OS?

Jochem

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RE: OT-Firewall

2004-02-04 Thread Nathan C. Smith
Netscreen.They have a rack-mountable unlimited session device for less
than $1000.Then there's always Cisco.

-Original Message-
From: Eric Creese [mailto:[EMAIL PROTECTED]
Sent: Wednesday, February 04, 2004 11:54 AM
To: CF-Talk
Subject: OT-Firewall

Any recommendations for a good, inexpensive firewall for a web server? 
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RE: OT-Firewall

2004-02-04 Thread Tom Kitta
If you would like something cheap and easy to use go for SonicWall. If you
want something (acording to some) more secure but less easy to use go for
fireBox. If you want ultimate security without any compromises go for
Symantec Gauntlet - regarded as the best in the industry by most experts.

You can find out more about these HW FW by going to their respective
websites. There are many models to choose, prices vary a lot (usually you
can get the box for much less than the listed price on company website).

TK

[Tom Kitta]-Original Message-
From: Eric Creese [mailto:[EMAIL PROTECTED]
Sent: Wednesday, February 04, 2004 2:37 PM
To: CF-Talk
Subject: RE: OT-Firewall

Ok so what HW Firewall would you recommend?

-Original Message-
From: Tom Kitta [mailto:[EMAIL PROTECTED]
Sent: Wednesday, February 04, 2004 12:16 PM
To: CF-Talk
Subject: RE: OT-Firewall

If you want something easy to setup, it will not be free, but will cost
you
a bit. Most hard to setup FW are 'free' i.e. they either come with
operating system or are free add ons (like using Linux or OpenBSD. Try to
look for an appliance (otherwise known as HW firewall) - a little box
which
is designed to just do firewalling for you, they tend to be more secure,
cheaper (than say ISA on windows box) and easier to setup than FW running
on
top of a well known OS.

You may also consider picking a good book, since any firewall can live up
to
its full potential only if the sysadmin knows what he/she is doing.

TK
 -Original Message-
 From: Jochem van Dieten [mailto:[EMAIL PROTECTED]
 Sent: Wednesday, February 04, 2004 1:04 PM
 To: CF-Talk
 Subject: Re: OT-Firewall

 Eric Creese wrote:

  Any recommendations for a good, inexpensive firewall for a web server?

 Hardware or software?

 If hardware, other server running a diskless OpenBSD.
 If software, which OS?

 Jochem

 --
 I don't get it
 immigrants don't work
 and steal our jobs
- Loesje
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RE: OT-Firewall

2004-02-04 Thread Taco Fleur
SmoothWall it's open source and free, runs likes a train and easy to
install..

Taco Fleur
Bloghttp://www.tacofleur.com/index/blog/
http://www.tacofleur.com/index/blog/
Methodology http://www.tacofleur.com/index/methodology/

Tell me and I will forget
Show me and I will remember
Teach me and I will learn 

-Original Message-
From: Eric Creese [mailto:[EMAIL PROTECTED] 
Sent: Thursday, 5 February 2004 3:54 AM
To: CF-Talk
Subject: OT-Firewall

Any recommendations for a good, inexpensive firewall for a web server? 
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Re: OT-Firewall

2004-02-04 Thread Jochem van Dieten
Eric Creese wrote:
 OS - Single Web server running Win2kSP4

 Looking for software.

What sort of ruleset are you looking at? Doing simple only port 
80  443 rules, or do you want to do stuff like limit the amount 
of syn's per remote IP address + total connection limit, 
statefull UDP filtering (for as far as UDP is statefull) etc. Can 
you talk to whoever controls the upstream router and have him 
block stuff?

Have you looked into what is natively built into Win2K (or every 
32-bit version of Windows for that matter)?

Jochem

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Re: OT-Firewall

2004-02-04 Thread Jochem van Dieten
Mike Brunt wrote:
 Eric, we use Tiny Firewall for this sort of requirement. 
 
 http://www.tinysoftware.com/home/tiny2?la=EN
 
 Hth, I am sure Jochem will have some good recommendations on this also.

I'm not sure if they are good, I could use some peer review ;-)

My usual solution is to enable the built-in packetfilter and 
don't run anything else. Open port 80 for HTTP and optionally 21 
for FTP (active only), 443 for HTTPS, X for remote control 
software and leave the rest closed. UDP is a bit more tricky, DNS 
will fail because you are really using a client and the client 
runs on an ephemeral port (the server runs on 53). You should be 
able to get around this if you have a second NIC and your DNS 
server is on the local subnet, or else I just leave it unfiltered 
(it is filtered at the router here anyway.)
After that, follow the instructions in the Microsoft TCP/IP 
whitepaper [1] to further harden your stack. There are also some 
templates available from the NSA.

Overall I have not had any problems with such a configuration. It 
is also a great way to connect unpatched systems during installation.

[1]http://www.microsoft.com/windows2000/techinfo/howitworks/communications/networkbasics/tcpip_implement.asp

Jochem

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RE: OT-Firewall

2004-02-04 Thread Alan Rafael Bleiweiss
Until we upgraded to a multi-server rack system we were quite happy with 
our Linksys 4 port firewall/router
Under $100 and you can lock down ports , open up specific ports as needed 
for various serviceswith
a web interface (need to be logged into the server)...

At 12:13 PM 2/4/04, you wrote:
OS - Single Web server running Win2kSP4


Looking for software.

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RE: OT-Firewall

2004-02-04 Thread Tom Kitta
Using just Windows packet filtering is not enough, it is stateless and
doesn't offer much protection. It is better than nothing at all, but not
much more. Even using personal firewall is better. one of the reasons people
say that Linux is a more secure OS is unavailability of firewall in Windows.
Linux comes with strong firewall in popular distributions.Here is my
estimate of the security your windows box:
1 no firewall at all
2 using MS build-in packet filter
3 personal firewall
4 using a router with a firewall
5 using real firewall that is statefull on common OS
6 using real firewall that is statefull on dedicated OS
7 using real proxy firewall on common OS
8 using real proxy firewall on dedicated OS

I would tie 6 and 7. Of course, specifics of the product will matter a lot
and knowledge of the person that sets it all up. So above is only very
general outline.

TK

[Tom Kitta]-Original Message-
From: Jochem van Dieten [mailto:[EMAIL PROTECTED]
Sent: Wednesday, February 04, 2004 4:32 PM
To: CF-Talk
Subject: Re: OT-Firewall

Mike Brunt wrote:
 Eric, we use Tiny Firewall for this sort of requirement.

 http://www.tinysoftware.com/home/tiny2?la=EN

 Hth, I am sure Jochem will have some good recommendations on this also.

I'm not sure if they are good, I could use some peer review ;-)

My usual solution is to enable the built-in packetfilter and
don't run anything else. Open port 80 for HTTP and optionally 21
for FTP (active only), 443 for HTTPS, X for remote control
software and leave the rest closed. UDP is a bit more tricky, DNS
will fail because you are really using a client and the client
runs on an ephemeral port (the server runs on 53). You should be
able to get around this if you have a second NIC and your DNS
server is on the local subnet, or else I just leave it unfiltered
(it is filtered at the router here anyway.)
After that, follow the instructions in the Microsoft TCP/IP
whitepaper [1] to further harden your stack. There are also some
templates available from the NSA.

Overall I have not had any problems with such a configuration. It
is also a great way to connect unpatched systems during installation.

[1]http://www.microsoft.com/windows2000/techinfo/howitworks/communications/n
etworkbasics/tcpip_implement.asp

Jochem

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immigrants don't work
and steal our jobs
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Re: OT-Firewall

2004-02-04 Thread Jim McAtee
- Original Message - 
From: Jochem van Dieten [EMAIL PROTECTED]
To: CF-Talk [EMAIL PROTECTED]
Sent: Wednesday, February 04, 2004 2:32 PM
Subject: Re: OT-Firewall

 Mike Brunt wrote:
  Eric, we use Tiny Firewall for this sort of requirement.
 
  http://www.tinysoftware.com/home/tiny2?la=EN
 
  Hth, I am sure Jochem will have some good recommendations on this also.

 I'm not sure if they are good, I could use some peer review ;-)

 My usual solution is to enable the built-in packetfilter and
 don't run anything else. Open port 80 for HTTP and optionally 21
 for FTP (active only), 443 for HTTPS, X for remote control
 software and leave the rest closed. UDP is a bit more tricky, DNS
 will fail because you are really using a client and the client
 runs on an ephemeral port (the server runs on 53). You should be
 able to get around this if you have a second NIC and your DNS
 server is on the local subnet, or else I just leave it unfiltered
 (it is filtered at the router here anyway.)
 After that, follow the instructions in the Microsoft TCP/IP
 whitepaper [1] to further harden your stack. There are also some
 templates available from the NSA.

 Overall I have not had any problems with such a configuration. It
 is also a great way to connect unpatched systems during installation.

It's better than nothing, but not very flexible.I have yet to figure out,
for instance, how to protect a box and still permit FTP out (for CFFTP).

If you can't use a good, dedicated hardware or *nix firewall, then I'll
second the nod for Tiny Firewall.Nice for standalone servers that you just
need to plug into a network.A server license is $79 from Tiny Software.

http://www.tinysoftware.com
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